Grand Cherokee 2WD V8-318 5.2L VIN Y MFI (1994)
3.
Insufficient sealant between the rear main cap-to-engine block mating surfaces. The sealant should extend across the mating surface. This
condition may be caused by a burr on the block at the oil feed hole or by insufficient sealant application during engine assembly (Refer to Figures
4 and 6, Item F).
To correct, thoroughly clean both surfaces of any old sealant. Allow surfaces to dry. Apply a 5 mm (0.20 inch) drop of MOPAR P/N 4318083 or
equivalent, on each side of the rear main bearing cap. DO NOT over apply sealant or allow the sealant to contact the rubber seal. Assemble the
bearing cap to the cylinder block immediately after sealant application (Refer to Figure 4, Item G).
REAR MAIN BEARING CAP-TO-REAR MAIN CRANKSHAFT OIL SEAL
Possible causal conditions may be:
1.
Loose fit of the crankshaft oil seal to its groove in the rear main cap. This condition may be caused by excessive machining of the oil seal grove.
The crankshaft oil seal-to-oil seal groove should be a snug fit. Replace the engine short block to correct the condition. Do not attempt to correct
this condition by using RTV sealant (Refer to Figures 1 and 4, Item H).
2.
Poor bonding of the crankshaft oil seal rubber to its internal core support. This will cause the end(s) of the rubber oil seal to separate from its
internal core support during oil seal installation. Repair by replacing the crankshaft oil seal (Refer to Figure 5, Item 1).
REAR MAIN CRANKSHAFT OIL SEAL TO CRANKSHAFT
Possible causal conditions may be:
1.
Crankshaft oil seal cut or torn. This condition may be due to nicks or scratches on the crankshaft sealing surface or simply due to a previously
damaged oil seal. Determine which part may be at fault. Repair by replacing the oil seal, or if required, replace the crankshaft and oil seal (Refer to
Figures 5 and 6, Items J and K).
2.
The crankshaft oil seal is installed backwards. This may occur during engine assembly. The outside face of the seal will be color coded (yellow or
