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Get connected to buyers and sellers of automatic transmission spare parts worldwide. Menu Home Shop Transmission parts. Shops map Transmission average repair cost How to save money on transmission repair Factors that have impact on the transmission repair price Top 5 typical symptoms of a failing automatic transmission Top 5 reasons for automatic transmission problems How to choose a transmission repair shop How not to be ripped off and avoid scams at transmission repair services Typical transmission repair scams.
What are you looking for? Part type Expand. Reset filter. Technical issues and repair guidelines The difference between 4HP22 and 4HP24 modifications lies in frictions and steel discs in packages. Repair procedures Friction components of the Forward package are the first to get burnt because of intensive operation.
This modification has established itself as a highly reliable transmission, which was broken down exceptionally because of incorrect use. Failures related to metal fatigue or an extra-long run is a very rare problem for this gearbox. Car owners should often examine the oil condition.
In winter it is needed to preheat the oil, which takes about two to three minutes of idling. Otherwise, the lubrication system does not provide proper work of friction clutch and movable elements inside the gearbox. It all leads to an increased deterioration. Insert o-rings and onto piston D Install piston D into cylinder C-D as shown in the picture. For easy mounting of o-rings use light grease Vaseline. Place plate spring into piston D. Insert mounting sleeve 6X56 on top of spring.
Insert snap ring on tapered sleeve seat. Use outside part of mounting sleeve and press snap ring downward into groove. Install piston C with o-ring and in the same manner as piston D. Insert plate spring on top of piston C and use spring device 5 X 56 to press plate spring downward and insert split rings as shown in the picture. Insert Brake D assembly complete. First start with steel plate , second use clutch plate alternately. On top of brake D assembly use thin end plate Install 2 seal rings on sun shaft and snap together.
Install sun shaft into planetary set as shown in the picture. Align upper an lower halves of freewheel 2nd. Insert brake C assembly and start with steel plate , alternating clutch plate and Install end plate of brake D assembly, narrow gap teeth of end plate must fit onto tabs in cylinder C-D shown in the picture. Be careful not to insert outer teeth of steel plate into V-shaped area of cylinder C-D as shown in the picture.
Thin steel plats must be always facing to piston side. Dependent to transmission part number. Also insert thrust washer with Vaseline onto web shaft seat. Align oil feed holes in center plate and cylinder C-D with holes in transmission case. Secure center plate with snap ring Install piston B together with o-ting into cylinder B.
Install plate spring, next install security washer. Insert snap ring on tapered sleeve seat 5X56 Use outside part of mounting sleeve and push snap ring downward into snap ring.
Alternately, use clutch plate steel plate Secure end plate with snap ring Insert seal ring into seal ring seat on cylinder B and snap together.
Install clutch B assembly complete into transmission case. Insert o-ring on tapered sleeve seat 5X56 Use outside part at mounting sleeve and push o-ring downward into seat. In the same manner, install support ring and snap ring together into seat. Install piston A together with o-rings into cylinder A.
Convex side of spring plate must be facing to the piston. Install clutch A assembly complete. Attention: Order of plates - Start with spring plate steel plate clutch plate Finish with clutch plate steel plate spring plate in between use alternating clutch and steel plates.
Install 2 seal rings and 1 o-ring onto input shaft Install input shaft into seat at oylinder A assembly. Press input shaft downward to stop point. Insert thrust washer with vaseline on input shaft seat as shown in the picture.
Insert disc washer and axle cage With right and left twisting motion insert teeth from clutch plates into carriers A-B and inner carrier. Top of cylinder A assembly should not exceed 8. For measuring use caliber. Also install seal ring with mounting sleeve 6 X 46 as shown. Install pump hollow gear and pump gear into pump housing with marked side of gears facing upwards.
Tap alignment pin into pump housing. Insert pump into intermediate plate and secure with 8 hexagon bolts Insert gasket and disc washer with vaseline onto intermediate plate. Use vaseline on seal rings of input shaft. Install intermediate plate assembly on transmission case. If it is necessary, install guide bushing into bell housing. Install bell housing onto intermediate plate and use 18 hexagon head bolts as follows.
Attention: After transmission assembly, it is necessary to check axle clearance. The necessary steps are explained under point 1. Attention: always use a new E clip. Insert counter weight into governor hub and secure with clip Install governor housing with 2 cylindrical bolts onto governor hub to be torqued 10 Nm tool size torx bit Fit governor assembly onto output shaft and push to stop point. Attention: to avoid damage to o-ring use vaseline. Seal rings on cylinder F must be snapped together.
Press seal ring with mounting sleeve 5 X 46 into extension as shown. Insert o-ring onto breather and install breather into extension as shown. Snap breather cap onto breather. Insert alignment pins into extension as shown, Insert gasket with vaseline onto extension. Fit extension onto transmission case. If it is necessary use plastic hammer to tap extension into place.
To be torqued - 23 Nm Insert output flange on output shaft. Push in to stop point. To check function of clutch and brake assemblies, insert air gun into oil feed holes recommended air pressure bar.
Also insert four long springs into oil feed holes located in the rear area, and secure all springs with circlips Install valve body assembly on transmission case, an connect pin on stop washer, with valvespool. Pull kick-down cable to position cam for valve body installation. Position of valve body assembly and adjustment of kick-down cable are explained under point 1. Secure oil screen with 3 cylindrical bolts To be torqued 8 Nm Tool size torx bit 27 Place 1 magnet each into 2 indentations in oil pan as shown.
Place gasket onto oil pan. If itis necessary install sealing plugs and sealing washers part numbers: Plug Washer Plug Nut Torque information refer to page 6. Secure oil pan on four corners with fixation plates Next secure both sides of oil pan with fixation plates Use 6 hexagon bolts, part number , with each of the fixation plates.
To be torqued 8 Nm Too! To aid installation of torque convertor use mounting grip X 56 Torque convertor shaft must be fitted into pump gear drive.
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