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Transmission general data
The first Mazda's 4-speed automatic transmission G4A-EL was designed with partial electronic controlling mechanism (shift solenoids). This transmission was used on Mazda 626 since 1987. In 1989, after thorough testing and updating this great transmission found application in Ford Probe. According to Ford classification, named as 4EAT-G.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATFWD2306,83,5Dexron III
Technical issues and repair guidelines
This transmission operates with different types of ATF manufactured by famous brands. It is recommended to change ATF only after estimation of its condition, and the older the car - the more frequently it is required to change ATF. In many cases, the torque converter lock-up wear-out clogs the valve body and damages solenoids. That leads to the torque converter repair and replacement of related spare parts.Complete reassembly of the transmission is performed with the help of Masterkit repair kit. This kit includes all gaskets and seals, all friction components and clutch discs. In terms of design, this transmission is similar to the F4A-EL (4EAT-F) and has the same common repair issues.
Every third repair of this transmission is minor and lies in replacement of the torque converter seals and gaskets (pan, pump and side valve cover) from oil leakage. At the same time specialists usually repair the torque converter with replacement of worn-out friction lining. The wear-out of the valve of linear pressure solenoids (EPC) and of the torque converter lock-up also causes many problems (jolts when shifting) in the GF4A-EL/ FU9A transmission.
Vibrations and rapid wear-out of bushings and seals start in case of a long oil starvation, which is usually related to the torque converter overheating, dirty valve body and solenoids. The brake band is one of typical spare parts, its successful design has not been changed since 1988. The drum Overdrive G4AEL 3-4 CL 42mm Overall Height (52,38mm OD Neck) 1986-2002 gets burnt together with clutches. Oil starvation leads to wear-out of friction surfaces. Repair specialists usually replace several essential gaskets and seals. The list of relevant spare parts also includes pan gaskets and the side cover gasket.
Which cars run with this gearbox?BrandModelYearTypeEngineFordPROBE90-934 SP FWDL4 2.2L V6 3.0L
How to repair this transmission (Videos)Transmission Failure MazdaFord F-4EATReplacement Auto Transmissionrebuild Fix Part 2 of 3Failure Fix Part 3 of 3
Instruction manuals and useful linksLink typeSourceDescriptionpdfwww.at-manuals.comScheme G4AELwebwww.at-manuals.comClutch application G4AELwebwww.at-manuals.comValve body G4AEL
Transmission general data
The 4-speed automatic transmission F4A-EL (KIA - 4EAT-F, F4E-AT) was designed by Mazda specialists together with Jatco in 1989 for FWD vehicles with the engine capacity of approx. 1.6 liters. This transmission had to replace the 3-speed F3A and was used for Mazda 323 and Ford Escort. In terms of design, this transmission is similar to the 4EAT-G.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATFWD1507,83,5SP-III
Technical issues and repair guidelines
This reliable and simple automatic transmission in most cases comes in repair services with the torque converter issues and replacement of spare parts: repair kit of gaskets and seals. Friction elements of Forward, Overdrive 3-4 and Reverse packs are the first to get burnt because of wear-out of rings and bushings. Later, repair specialists packages Coast and L\R. With transmission aging it is required to replace the kit of bushings. Significant oil pressure losses and burning of friction elements in packages occur, when the wear-out of bushings exceeds 100 microns. The bushing of the torque converter hub is the first to wear out.
The clutch drum (Reverse & Forward Clutch Drum (only for Ford/Mazda)) gets replaced together with burnt friction elements, steel and bearing discs on old cars.Operation with contaminated ATF and vibrations related to wear-out of bushes has a bad impact on the oil pump. The rear cover is also replaced quite often (poor Y-alloy in Mazda). The valve body of this transmission has a specific distinction: for Kia- there is a valve 3-2, for Ford and Mazda- no valve. A new design of the valve body is very robust and has no problems of the first series. Timely detection of the burnt flavor and cleaning of the valve body with replacement of the EPC solenoid (or SHIFT - Ford/Mazda), 2-3 и 3-4.), which reaches the end of its service life, ensure reliability and a long-time service life of this transmission without any serious problems.
Which cars run with this gearbox?BrandModelYearTypeEngineMercuryTRACER90-994 SP FWDL4 1.8L 1.9L 2.0L
How to repair this transmission (Videos)Kia Spectra TransmissionF4A-EL Case Lugs1998 Escort Transmission
Instruction manuals and useful linksLink typeSourceDescriptionpdfwww.at-manuals.comScheme F4AELwebwww.at-manuals.comTransTec Manual F4AELwebwww.at-manuals.comStall test F4AEL
Transmission general data
The 4-speed automatic transmission Subaru 4EAT was manufactured in 1988 (EC8 = R4AX-EL). This transmission is related to the F-4EAT transmission model manufactured by Jatco. The modification released in 1999 was replaced the previous EC8 version on almost all popular Subaru models. This transmission was installed not only on low-powered Impreza and WRX, but also on middle class Forester and Outback with 2-2,5 liter engines, and even on powerful Legacy model with the engine capacity of 3 and 3.5 liters.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATFWD3009,56Dexron III-VI / Mercon V
Technical issues and repair guidelines
Subaru vehicles with this transmission rarely come to transmission repair shops. In terms of maintenance services, this transmission is very similar to Jatco transmnissions. The 4EAT unit is a very reliable and simple system with special settings which do not allow drivers to overload prone-to-damage parts with a high degree of safety.
Overhauls usually consist of the reassembly procedure with replacement of the filter and repair kit of gaskets and seals. A kit of friction components is also commonly ordered by transmission specialists together with the abovementioned components. If the transmission operates for a long time with burnt fluid, then all steel discs get replaced with frictions. The external filter protects the valve body and solenoids from contaminated ATF, which appears because of the worn friction lining of the torque converter. Specialists recommend to replace it together with the engine oil filter on cars where the mileage parameter enxceeds 100 thousand kilometers, especially after a hot summer. The valve body unit of this transmission was updated in 1998 (type 2) and in 2001. These components are quite durable and require only timely cleaning.
If the transmission is overheated and has leakages through the pump seal of the torque converter and oil rapidly gets contaminated after the ATF, then the torque converter lock-up clutch is likely to wear out, and as a result damages the wheel hub. The torque converter is repaired and the valve body gets cleaned from the dirt, which appears from the damaged friction, and the overhaul kit is replaced. The first standard overhaul of the car with high mileage always includes replacement of pistons with frictions and a solenoid of linear pressure. The resource of this transmission is above the average and after a proper overhaul may be increased for several years.
Which cars run with this gearbox?BrandModelYearTypeEngineSaab9'2X04-064 SP F/4WDL4 2.0L 2.5LSubaruBAJA03-064 SP 4WDH4 2.5L H6 3.0LSubaruDEX08-104 SP F/4WDH4 1.3LSubaruFORESTER98-124 SP 4WDH4 2.0L 2.5LSubaruIMPREZA / WRX93-114 SP 4WDH4 1.5L 1.6L 1.8L 2.0L 2.2L 2.5LSubaruLEGACY90-104 SP 4WDH4 2.0L 2.2L 2.5L H6 3.0L 3.6LSubaruLOYALE88-904 SP 4WDH4 1.8LSubaruOUTBACK00-104 SP 4WDH4 2.5L H6 3.0LSubaruSVX92-974 SP 4WDH6 3.0 3.3LSubaruXT87-914 SP RWDH4 1.8L 2.7L
How to repair this transmission (Videos)4EAT rebuilding4eat transfer clutchServicing a Subaru Phase II 4EAT
Instruction manuals and useful linksLink typeSourceDescriptionpdfwww.at-manuals.comManualpdfwww.at-manuals.comRepair manualpdfwww.at-manuals.comScheme
Transmission general data
The A518 was updated to 46RH (retainer hydraulic) and later to 46RE (retainer electronic). A618 was modified to 47RE and 48RE.
The family of 4-speed automatic transmissions "TorqueFlite" - A518/ A618 has been installed on rear-driven Dodge and Jeep with engines capacity about 6 liters (for A618 up to 8 liters) since 1990. This transmission is based on design of its predecessor А500.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATRWD61013,44,8Mopar ATF+4
Technical issues and repair guidelines
Filters for these automatic gearboxes are one-time-use with a felt membrane. With the mileage higher than 100 thousand kilometers, it is recommended to change filters with ATF. These transmissions are not very sensitive to oil type and its level, but with age oil cleanness has a greater significance for this transmission.In addition to the filter, specialists order the repair kit of gaskets and seals for the overhaul. In most cases, friction components are not ordered separately (if the oil has burning smell), but as a whole kit of frictions, which vary in years of manufacture. The kit of steel discs is ordered as well.The complete kit of spare parts Masterkit is ordered in roughly half the cases.
Popular parts to be repaired in A518/ A618:
Friction clutches and steel discs Direct and Forward operate more intensively than others and as a result get burnt. Frictions penetrated with burnt oil from the discs should be replaced.The brake band (Reverse) is a spare part and should be replaced as often as the kit of friction componens. The list of spare parts also includes plastic discs-washers.
The electric part of the transmission exhausts its resource because of operation in overheated and contaminated ATF. Basically, controlling problems occur in the torque converter lock-up solenoid because of hot and contaminated ATF.
Which cars run with this gearbox?BrandModelYearTypeEngineDodgeDURANGO98-034 SP R/4WDV8 5.9LDodgePICKUP/DAKOTA98-004 SP R/4WDV8 5.9LDodgePICKUP/RAM 1500-350095-024 SP R/4WDV8 5.2L 5.9LDodgeVAN/WAGON 1500-350095-034 SP RWDV8 5.2LJEEPGRAND CHEROKEE984 SP R/4WDV8 5.9L
How to repair this transmission (Videos)46RE Class introduction46RE Class Part 1 Lesson 146RE Class Part 2 lesson 346RE Class Part 2 lesson 446RE Class Part 2 lesson 546RE Class Part 2 lesson646RE Class Part 2 lesson 748-RE Transmission - Valve Body Kit installation46RE, 48RE transmissionsa518 transmission part 1a518 transmission part 2a518 transmission part 3
Instruction manuals and useful linksLink typeSourceDescriptionpdfSonnaxValve Body Layout 46RHpdfSonnaxVacuum test 46RE, 46RH, 47RE, 47RH
Transmission general data
The 4-speed automatic transmission 45RFE was produced in 1999 for powerful 4.7 liter engines of Jeep and pickups Dodge Dakota. Subsequently, this transmission was adjusted for diesel engines (with the capacity equal to 2.8 liters). The 5-speed modification 5-45RFE has been manufactured since 2003.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATRWD115Mopar ATF+4
Technical issues and repair guidelines
These comparatively “invincible” transmissions in most cases come to repair shops for change of the oil and filters, which are replaced with dismounting of the pan. AWD modifications of this transmission have different oil filter and pan depth.
Scheduled overhaul includes the following spare parts in repair kits:
- Kit of gaskets and seals is replaced because of worn-out rings and valve body spare parts.
- Kit of friction components
- Kit of steel discs
These 3 kits compose the Master Kit. The kit of rubber-covered pistons is also ordered in case of the transmission overheating. Worn-out bushings also get replaced quite frequently.
Problems of these automatic transmissions occur when the valve body provides insufficient quantity of ATF. Solenoids also exhaust their limited service resource, the valve body gets clogged and wears out.The pump has 3 gears which are tested for wear and damages of operating surfaces. The pump bushing is also checked for wear. The pump has some issues with the wear-out of surfaces. The reason lies in a long-term operation with contaminated oil.The rubber-coated pump cover performs functions of the pump seal. This cover gets damaged by vibrations from the worn-out torque converter lock-up. There are several modifications of this cover.
Friction components with steel discs are the first to get burnt in Overdrive and Underdrive packages.This overheating of frictions in chain order leads to overheating of the valve body itself and electronics in the block of solenoids.
Which cars run with this gearbox?BrandModelYearTypeEngineDodgeDURANGO00-024 SP R/4WDV8 4.7LDodgePICKUP/DAKOTA00-024 SP R/4WDV8 4.7LDodgePICKUP/RAM 150002-054 SP R/4WDV6 3.7L V8 4.7LJEEPGRAND CHEROKEE99-004 SP R/4WDV8 4.7LJEEPLIBERTY24 SP R/4WDV6 3.7L
How to repair this transmission (Videos)45RFE Transmission Teardown Inspection545RFE Teardown45RFE Valvebody Overhaul
Instruction manuals and useful linksLink typeSourceDescriptionpdfValve Body Pro45RFE Simplifying Sol's CodespdfSonnaxValve Body Layout 45rfepdfSonnaxVacuum test 45RFE, 545RFE, 65RFE, 66RFE, 68RFE
Transmission general data
The 4-speed automatic transmission 42RLE was designed jointly with 42LE (front-drive) and was produced since 2003, installed on the powerful RWD Chrysler of the 300-series, Liberty Jeeps, Cherokee (V6 and V8) and Dodge pickups with engines from 2.7 l up to 4 liters.
In terms of design, the 42RLE is a simplified rear-driven version of the FWD A606 (42LE), which doesn’t have the differential, chain and some other elements for the front drive.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATRWD114Mopar ATF+4
Technical issues and repair guidelines
The common repair kit for this transmission includes the following:
- repair kit of gaskets and seals.
- kit of friction components.
- kit of steel discs (less frequently)
This article covers the common issues with the Jeep Wrangler 42RLE Automatic Transmission, as well as some possible solutions. - Some of the more common problems include failed gear shifts, clutches and faulty torque converters, as well as sporadic torque converter clutch overdrive engagement problems. These issues can often indicate transmission problems which may require a rebuilt transmission. In some cases, a brand new transmission may be necessary. Older Jeep vehicles are especially prone to failure problems due to their age, and any indications of severe transmission problem should be addressed immediately. Symptoms such as loss of speed or torque converter speed can indicate a valve body issue which is a widespread issue in newer Jeep Wrangler vehicles.
This is when the transmission slips and may even cause your car to lose transmission fluid. This could be due to a faulty connection or the torque converter, which is what causes the transmission engine to slip. A slipping transmission can cause fault codes to appear on your vehicle's diagnostic scanner and indicate that you need repair. To fix this issue in a Jeep Wrangler, you will need to give your transmission a full flush and replace the valve body with a new one. This should stop your vehicle from slipping as it did before.
Causes of most transmission problems in a Jeep Wrangler can be traced to low fluid levels, leaks and lack of proper maintenance. Checking the fluid level in the transmission is one of the most common Jeep Wrangler problems. If the fluid level is too low, it can cause your car to slip or jerk as you shift gears. To avoid this problem, make sure to check your car's transmission fluid level regularly and top it off when needed. It is also important to get your car serviced regularly and use the right tools and experience to lessen transmission fluid loss due to leakages. Cars are unlike motors, so regular oil changes may not solve their problems; instead, you need to check their transmission fluids.
Automatic transmissions can be tricky and can cause a variety of problems. 42RLE Automatic Transmission Problems and Repair Solutions involve understanding the system, diagnosing the issue, and finding the right repair shop to fix it. Common problems include a transmission that tends to shift too hard or grinds when shifting. Many Dodge Ram owners experience problems in second gear where they enter a limp home mode and can only go up to 40 mph. To fix this, you may need to go to a repair shop and have your transmission flushed or replaced.
The 42Rle Automatic Transmission is found in some Chrysler vehicles and has been known to cause problems with shifting, dropping vehicle speed, and poor fuel economy. To operate the torque converter clutch, the transmission must first lock it in place. Once it is locked, the transmission will then disengage the clutch to help improve fuel economy when accelerating at certain speeds. If this does not work, you may need to unlock the torque converter clutch manually. The manual pdf that describes how to do this can be found online.
The torque converter lock-up wear-out usually results in vibrations and wear of the pump bushing (which is the same in A604-A606 and is included in the kit of bushings). The problem with the pump bushing manifests itself in leakages through the pump seal. If this problem stays neglected, then it may lead to the oil pump replacement.
The block of solenoids in the 42RLE is a common reason for many issues in this family of automatic transmissions. The resource of this block is not a large one, and the ТСМ unit loads solenoids quite intensively forcing the torque converter locking at the first opportunity to increase acceleration characteristics of the car.
The Clutch Hub (2-4 Clutch) is a typical vulnerability of these transmissions. In terms of design, this automatic gearbox has problems with the hub and a sun gear. The problem is also provoked by shortages of the oil pressure.Sensor Output Speed (VSS) and Input (TSS) cannot endure high temperatures and oil contamination by the metal dust. Pump bushings, gaskets, pistons, planetary gears get out-of-service because of insufficient oil pressure. These typical problems also occur in the family А604-А606.
This reliable transmission may serve for a long time. But it should be kept in mind that engineers of Chrysler wanted to win the competition with other fast automatic transmissions, therefore they adjusted TCM settings in such a way that the accelerator pedal easily forces the transmission work 101% of its capabilities without leaving any reserves.
Which cars run with this gearbox?BrandModelYearTypeEngineChrysler300 SERIES04-104 SP RWDV6 2.7L 3.5LDodgeCHALLENGER08-114 SP RWDV6 3.5LDodgeCHALLENGER08-144 SP RWDV6 3.5LDodgeCHARGER05-104 SP RWDV6 2.7L 3.5LDodgeDURANGO04-084 SP R/4WDV6 3.7LDodgeMAGNUM04-084 SP RWDV6 2.7LDodgeNITRO07-114 SP R/4WDV6 3.7LDodgePICKUP/DAKOTA03-114 SP R/4WDV6 3.7LDodgePICKUP/RAM 150006-164 SP RWDV6 3.7LJEEPCHEROKEE03-144 SP 4WDV6 3.7LJEEPCHEROKEE00-134 SP R/4WDL4 2.4L 2.5L L6 3.6L 3.7L 4.0LJEEPLIBERTY03-124 SP R/4WDL4 2.4L V6 3.7LJEEPWRANGLER06-164 SP R/4WDV6 3.8LJEEPWRANGLER UNLIMITED06-164 SP R/4WDL4 2.8L V6 3.8LMitsubishiENDEAVOR03-104 SP R/4WDV6 3.8LMitsubishiRAIDER06-084 SP R/4WDV6 3.7L
How to repair this transmission (Videos)42RLE Teardown42RLE/VLP Valvebody Overhaul & Install
Instruction manuals and useful linksLink typeSourceDescriptionpdfATRA42RLE ATRA Technical Bulletin webwikipediaWikipedia article about 42RLEwebSonnax42LE, 42RLE Variable Line Pressure
Transmission general data
Since 1988, the automatic transmission A500 had been installed on different models of Dodge pickups. After its modification in 1994 and renaming as 42RE (as electrically controlled transmission), it became used on famous Jeeps with the engine capacity equal to 4 liters and higher.
The 4-speed enhanced modification of 44RE named as A500 was developed for engines with a high torque (5-liter petrol-powered and 3-liter diesel engines). In terms design, this transmission is related to the TF6 (A904), and was installed on RWD vehicles and Mitsubishi pickups.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATRWD11,64,5Mopar ATF+4
Technical issues and repair guidelines
Repair kits of gaskets and seals and frictions are frequently ordered for repair of this transmission.The contamination of ATF and the valve body starts with wear-out of the torque converter lock-up. The torque converter rebuilding is recommended without waiting until the friction component damage to the glue layer.This family of RWD automatic transmissions allows drivers to use its capacity to the fullest and operates for a long time without the overhaul.
Because of transmission ageing, wear-out of the torque converter clutch (repair of the torque converter and friction replacement) and related to it overheating and oil starvation, specialists order the following parts:
- pump cover bushing
- pump seal
- Brake bands Kickdown and Reverse also considered to be "spare parts" and get replaced almost during each overhaul of an old vehicle.
The oil starvation often occurs because of problems with clogged valve body channels or as a result of improper operation of electric regulators and sensors. And it’s a consequence of a long-term exploitation with overheated and contaminated oil, caused by the worn-out torque converter lining. Torque converters on these transmissions should be repaired to prevent problems after covering 120-150 thousand kilometers.
Typical orders for the electirc part of the transmission:
- governor pressure sensor;
- ЕРС solenoid;
- block of solenoids;
- planetary gear (Front);
Specialists also frequently replace the Central support
- Gear selector is also ordered quite often for replacement.
Which cars run with this gearbox?BrandModelYearTypeEngineAston-MartinVANTAGE98-004 SP RWDV8 5.3LDodgeDURANGO98-024 SP R/4WDV6 3.9LDodgePICKUP/DAKOTA95-034 SP R/4WDV6 3.9LDodgePICKUP/RAM 150095-024 SP R/4WDV6 3.9LDodgeVAN/WAGON 1500-250095-964 SP RWDV6 3.9LJEEPCHEROKEE00-034 SP R/4WDL6 4.0LJEEPGRAND CHEROKEE94-044 SP R/4WDL6 4.0L
How to repair this transmission (Videos)A500 Rebuild IntroductionPart 1 - Tear DownPart 2 - Valvebody RebuildPart 3 - Pump, Forward and Rear Clutch RebuildPart 4 - Bushing Replacement, Planetary Gear Train RebuildPart 5 - Overdrive Unit RebuildPart 6 - FINALE : Reassembly
Instruction manuals and useful linksLink typeSourceDescriptionpdfSonnaxValve Body Layout 42RE
Transmission general data
The 4-speed automatic transmission A606 is a modification of the A604 designed for FWD vehicles with a longitudinally positioned engine. It was designed in a couple of years after the release of its predecessor А604 (in 1993), and after two years of testing this model hit the market. In 1998, one more upgrade of this transmission was introduced with enhancement of the Reverse package and rings. According to athe new classification of Chrysler, the name of this automatic transmission (after 2003) was 42LE and this modification gained popularity.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATFWD9,44,3Mopar ATF+4
Technical issues and repair guidelines
This transmission is intended for engines with the capacity up to 3.5 liters. Many parts for this transmission are interchangeable with components from the А604. It was installed on Dodge, Chrysler, Mercury with 3 - 3.5 liter engines. A new differential and a chain were added.
Repair kits of gaskets and seals for A606 are not interchangeable with the one used for the A604. These kits are ordered almost for each repair and replacement of worn-out rings and overheated, hardened or cracked seals. Kits of friction components are universal and can be used for both transmissions. They are fully replaced, if burnt ATF reaches worn-out friction linings.The main problem of the electric part in both transmissions is the same – clogged valve body and block of solenoids. The block of solenoids for the A606 is reassembled with the use of repair kit (from the overhaul kit).
- RPM sensors are replaced
- Switch is replaced frequently (problem is caused by overheating.
Transmission components in “old” cars with the mileage higher than 200 thousand kilometers can not endure loads – in cars with powerful engines the following parts are replaced:
- Planetary gear
- Hub for frictions with a sun gear, (2-4 Hub w/Sun Gear).
- Hub for frictions (A604 Hub,Overdrive Clutch)
Steel discs burn together with friction clutches of the package Overdrive. Then burns their piston. The reason of this problem lies in the block of solenoids or worn-out bushings leading to the oil starvation in the package OD. Another typical problem of American automatic transmissions is the torque converter, which is very sensitive to even the slightest oil shortage. The planned rebuilding of the torque converter shouldn’t be postponed, if it is need.
Which cars run with this gearbox?BrandModelYearTypeEngineChrysler300M99-044 SP FWDV6 2.7L 3.5LChryslerCONCORDE95-044 SP FWDV6 2.7L 3.2L 3.3L 3.5LChryslerLHS95-014 SP FWDV6 3.5LChryslerNEW YORKER95-964 SP FWDV6 3.5LChryslerPROWLER01-024 SP RWDV6 3.5LDodgeINTREPID95-044 SP FWDV6 2.7L 3.2L 3.3L 3.5LEagleVISION95-974 SP FWDV6 3.3L 3.5LPlymouthPROWLER97-024 SP FWDV6 3.5L
How to repair this transmission (Videos)A606 Teardown Inspection42RLE/VLP Valvebody Overhaul & Install42RLE Teardown42RLE New Tool for 4x4 UnitsChrysler 42LE Transaxle
Instruction manuals and useful linksLink typeSourceDescriptionpdfwww.at-manuals.comManual A606pdfwww.at-manuals.comRepair manual A606pdfwww.at-manuals.comScheme A606
Transmission general data
The 4-speed automatic gearbox A604 also named as "UltraDrive" (40TE/ 41TE) was designed in 1989 for front-wheel drive Chrysler vehicles and Dodge with engines ( 2-4 lit.). The structural design of the mechanical part of this transmission is based on well-known range of 3-speed gearboxes А404 - А413.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATFWD8,63,8Mopar ATF+3
Technical issues and repair guidelines
The A604 transmission is one of the first gearboxes with added electronic computer responsible for all automatics of the hydraulics control, which adapts to the driving style and enhancing efficiency of operation of all transmission elements, including the torque converter (TC). Many spare parts can be replaced by parts for A606 (42LE) produced in 1993. In 2003, the A604 was updated one more time and renamed to 40ТЕ (for engines up to 2.4L), enhanced and well-known 41TE (up to 3.8 L).
For scheduled major repairs specialists usually include: filter, repair kits of gaskets and seals and frictions.
Typical problems are related to:
-Rear planetary gear
- Rear sun gear (wear-out of gears spline connections)
- Hub for friction clutches 2-4 with a sun gear.
- The set of hollow discs is replaced (reason: overheating, vibrations, ageing, contaminated oil with metal parts from shafts.
- The set of bearings is also replaced quite frequently.
The TC has a short operating resource. It should be handed in for repair with cutting and welding after 100-120 thousand kilometers (especially on powerful vehicles). The operation with the worn-out TC lock-up leads to beats and vibrations resulting in breakdown of the bushing and the pump seal.Typical repair of the “old” А604 consists of change of all bushings. This problem occurs when vibrations wear out bushings and oil dropping through bushings lead to the oil starvation.
Old automatic gearboxes have some issues with:
- Replacement of shaft rotation sensors
- Switch\ range sensor.
- different problems with differential bearings
- Rubber-covered piston
- Drum
This transmission reliably operates for a long period of time under the condition of yearly (or after 30 thousand kilometers) oil change and monitoring of its level and quality. If the oil is contaminated very rapidly, then it is advisable to check the TC operation and repair it on a timely basis.
Which cars run with this gearbox?BrandModelYearTypeEnginePlymouthGRAND VOYAGER97-984 SP 4WDV6 3.8L
How to repair this transmission (Videos)repair part 3repair part 4repair part 5repair part 6repair part 741TE transmission with housing damage604 Teardown Inspectionrepair part 1repair part 2
Instruction manuals and useful linksLink typeSourceDescriptionpdfwww.at-manuals.comRepair manual A604
Transmission general data
The 3-speed automatic transmission GM 3T40 named as Turbo-Hydramatic 125C was installed on FWD cars with engine capacity from 2 up to 3.1 liters. The first modifications of this transmission did not have the torque converter, later versions (1995) had an electronic control and letter E was added to a new name GM 3T40E. The most significant modification was introduced in 1984. Since then sets of gaskets and seals have not been changed.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type3ATFWD2508,53,8Dexron III
Technical issues and repair guidelines
The GM 3T40 is a reliable, simple transmission that operates over 300 thousand kilometers. It served as a prototype for the 4-speed family 4T40E -4T60E.This transmission rarely gets in repair services. The main spare parts ordered for repair of this transmission are the repair kit of gaskets and seals (Overhaul kit) or a complete Masterkit (with clutches and seals).
Which cars run with this gearbox?BrandModelYearTypeEngineBuickCENTURY/CENTURY WAGON95-963 SP FWDL4 2.2LBuickSKYLARK953 SP FWDL4 2.3LChevrolet/GMBERETTA/CORSICA95-963 SP FWDL4 2.2LChevrolet/GMCAVALIER95-013 SP FWDL4 2.2LChevrolet/GMLUMINA953 SP FWDV6 3.1LOldsmobileACHIEVA953 SP FWDL4 2.3LOldsmobileCUTLASS CIERA/CRUISER95-963 SP FWDL4 2.2LOldsmobileSILHOUETTE953 SP FWDV6 3.1LPontiacGRAND AM953 SP FWDL4 2.3LPontiacSUNFIRE95-023 SP FWDL4 2.2LPontiacTRANS SPORT953 SP FWDV6 3.1L
How to repair this transmission (Videos)Valvebody Service and SealsDisassembly and InspectionBushing Replacement and Painting
Instruction manuals and useful linksLink typeSourceDescriptionpdfshop.ukrtrans.bizManual ATSG 3T40, 125Cpdfshinseiauto.comTransmission breakdown illustration 125Cpdfat-manuals.comDiagnosis and general service 125CwebSonnaxGM 125C Checkball Locations
Transmission general data
3-speed automatic
gearbox THM (Turbo Hydromatic) 400, also named as 3L80). Turbo-Hydramatic is a
patented name for the family of automatic gearboxes designed and produced by GM.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type3ATRWD340125Dexron III
Technical issues and repair guidelines
This gearbox 3L80 has a simple and reliable design. All parts are made of solid materials. Shifting of gears is implemented very smoothly and almost unnoticeable. The main disadvantages of this automatic transmission are significant dimensions and weight of the transmission. This transmission is considered to be the most reliable in the history of GM (the most enduring).
Which cars run with this gearbox?BrandModelYearTypeEngineChevrolet/GMH1 HUMMER923 SP 4WDV8 6.2L DIESEL
How to repair this transmission (Videos)3L80 aka Turbo Hydramatic 400 tear downTransmission Rebuild
Instruction manuals and useful linksLink typeSourceDescriptionwebWikipediaSuper Turbine 400 / THM400 / THM375 / 3L80 / 3L80HDpdfMakcotransmissionpartsTransmission breakdown illustrationwebSonnaxSetting Total Endplay to Prevent TH400 Gear Train Failure
Transmission general data
This popular family of 3-speed automatic transmissions A404 / A413 / A470 / A670 had been successfully installed since 1981 on FWD vehicles Chrysler, Dodge and Plymouth of a middle class for nearly 20 years.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type3ATFWD8,43,8Mopar ATF+3
Technical issues and repair guidelines
The overhaul kit of gaskets and seals is frequently ordered by transmission specialists for repair of automatic gearboxes of this family. Specialists also order a complete kit of frictions. Friction components are replaced if the ATF has burning smell and its hard to set clearances in packages. A typical repair procedure of this transmission family includes the replacement of all spare parts (including the kit of friction components, steel discs and brake bands.Ageing process and overheating lead to the wear-out of plastic discs (washers) which are replaced during the overhaul. Specialists also frequently replace a complete kit of bushings. Worn-out bushings lead to the oil starvation of frictions.
The list of spare parts for this transmission also includes:
- The kit of the overrunning clutch separator (springs and rollers)
- The pressure centrifugal regulator (Governor) is usually rebuilt.
- Solenoid of the torque converter lock-up for А670 introduced in the hydraulic 3-speed for switch-on of an early lock-up.
A404 /470 /670, 30TH/31TH is a family of unique transmissions produced by Chrysler having a solid reserve of transmission components.
Which cars run with this gearbox?BrandModelYearTypeEngineChryslerPT CRUISER03 SP FWDL4 2.4LChryslerVOYAGER13 SP FWDL4 2.4L V6 3.0LDodgeCARAVAN/GRAND CARAVAN95-003 SP FWDL4 2.4LDodgeNEON95-013 SP FWDL4 2.0LDodgeSPIRIT953 SP FWDL4 2.5L V6 3.0LPlymouthACCLAIM953 SP FWDL4 2.5L V6 3.0LPlymouthNEON95-013 SP FWDL4 2.0LPlymouthVOYAGER/GRAND VOYAGER95-003 SP FWDL4 2.4L
How to repair this transmission (Videos)Teardown Inspection
Instruction manuals and useful linksLink typeSourceDescription0www.at-manuals.comTechnical training A413pdfwww.at-manuals.comScheme A413webwww.at-manuals.comSolenoid application chart A413