Skylark L4-138 2.3L SOHC VIN 3 MFI QUAD 4 (1992)
Begin with the "Quick Check Procedure" ("Automatic Transaxle Diagnosis" section of the 1992 Service Manual) which provides a general outline of
how to properly diagnose a HYDRA-MATIC 4T60/ 4T60-E transaxle. This procedure will aid the technician in choosing the proper path to diagnose the
symptom by describing the basic checks and then referencing the location of the specific diagnostic checks. This will ensure the vehicle has been
properly diagnosed and no unnecessary repairs are performed.
If it is suspected the transaxle contains this concern, it is essential that the channel plate and spacer plate be inspected 100 percent. This can be
accomplished by the following procedure: (NOTE: Make certain the work area is adequate and CLEAN for the layout and inspection of components.)
Spacer Plate Assembly Inspection
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Remove spacer plate assembly from transaxle (refer to 1992 Service Manual, Transaxle On-Vehicle Service Section 7A for proper on-vehicle
service to remove and replace spacer plate assembly).
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Carefully remove spacer plate to channel plate gasket, and spacer plate to valve body gasket.
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Physically probe spacer plate orifice 100 percent with a pin or other gage to ensure orifice is not plugged with shot (smaller orifices are more
likely to be contaminated and require special attention - refer to Figure 2 for spacer plate problem areas).
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Thoroughly wash spacer plate assembly and blow dry with an approved compressed air source.
Channel Plate Assembly Inspection
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Remove channel plate assembly from transaxle (refer to 1992 Service Manual, Transaxle On-Vehicle Service Section 7A for proper
on-vehicle service to remove and replace channel plate assembly).
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Inspect channel plate assembly casting slots and hub surface 100 percent for contamination (see Figure 2 for channel plate problem areas).
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Thoroughly wash channel plate assembly and blow dry with an approved compressed air source (remove manual valve prior to wash to
ensure bore is properly cleaned and manual valve moves freely in bore after procedure is completed).
LABOR TIME INFORMATION:
Labor time should be charged under Operation Number K-7461 "Channel Plate and/or Gasket - Replace."
INC:
Cooler line flush, oil pressure test, setting TV cable, clean and inspect parts and all necessary measurements and adjustments.
NOTE:
For check and adjust toe-in, refer to operation E2000 and add the applicable times to the regular hours column. (Applies to Regal only).
SERVICE MANUAL REFERENCE:
Refer to the 1992 Service Manual, Automatic Transaxle On-Vehicle Service Section 7A for proper on-vehicle service to remove and replace a channel
plate assembly.
