Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
CAUSE:
If this condition exists (and upon inspection of the low/reverse components), it is noted that the piston outer lip seal is cut due to piston over-travel, this
over-travel could possibly cause flattening of the low/reverse release spring (655) and deflection of the low/reverse clutch spring retainer (656).
CORRECTION:
Proper diagnostics for either of the above symptoms should be performed prior to attempted repair for any condition. Diagnosis should include:
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Check fluid levels
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T/V cable adjustment
-
Fluid pressure check
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Manual valve secured
-
Low/reverse pipe not bent; washer seal/O-ring secured; pipe brackets tight
-
Low/reverse piston seals uncut and properly installed
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No loose retainers
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Cup plug seal properly installed (not cut)
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Backing plate in proper location
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Driven sprocket support Teflon seals
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Direct clutch seals
If the diagnostic conditions are met and further repair is required, both the below listed service parts should be replaced along with any low/reverse
clutch components.
SERVICE PARTS INFORMATION:
Part Name/Service Package
Package Number
Low/Reverse Clutch Release Spring (655)
8628222
Low/Reverse Clutch Retainer and Snap Ring
8664961
(656/657)
These service packages are currently available from GMSPO.
SERVICE MANUAL REFERENCE:
Refer to the "Automatic Transaxle Diagnosis/Unit Repair" section of your service manual for necessary low/reverse clutch diagnostic and repair
information.
