Hummer H3. Manual — part 817
Fig. 313: Input Clutch Assembly
Courtesy of GENERAL MOTORS CORP.
18. Remove the overrun clutch spring assembly (634).
19. Remove the overrun clutch piston (632).
20. Remove the forward clutch piston (630).
21. Remove the forward clutch housing (628).
22. Remove the 3rd and 4th clutch spring assembly (626).
23. Remove the 3rd and 4th clutch apply ring (625).
2007 Hummer H3
2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3
24. Remove the 3rd and 4th clutch piston (623).
INPUT HOUSING AND SHAFT ASSEMBLY INSPECTION
Fig. 314: Identifying Input Housing & Shaft Assembly
Courtesy of GENERAL MOTORS CORP.
1. Inspect the input housing and shaft assembly for the following conditions:
Porosity
Spline wear - internal and external
2007 Hummer H3
2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3
Input speed sensor models, rotor teeth for cracks or damage
Three turbine shaft ball check valves are present and move freely
Retainer and ball check valve assembly (620)
Orificed cup plug (698)
Lube hole cracks
2. Test the input housing for cracks by tapping housing with wooden handle. Housing should
produce a sharp ring.
3. Inspect the turbine shaft oil seal ring (619) grooves for damage or burrs. The oil seal rings
(619) must fit loose into the ring grooves.
Fig. 315: Identifying Oil Feed Passages
Courtesy of GENERAL MOTORS CORP.
2007 Hummer H3
2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3
4. Inspect the oil feed passages for obstructions.
5. Apply compressed air into the passages indicated.
INPUT HOUSING AND SHAFT ASSEMBLY ASSEMBLE
Tools Required
J 23327-1 Forward Clutch Spring Compressor (Bridge). See Special Tools.
J 23456 Booster and Clutch Pack Compressor. See Special Tools.
J 25018-A Clutch Spring Compressor Adapter. See Special Tools.
J 26744-A Seal Installer. See Special Tools.
J 29882 Overrun Clutch Seal Protector. See Special Tools.
J 29883 Forward Clutch Seal Protector. See Special Tools.
Assembly Procedure
2007 Hummer H3
2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3
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