Section 03 ENGINES
Subsection 01 (LEAK TEST)
A32C1HA
If pressure drops, it indicates a defective crank-
shaft inner seal.
2
A32C1IA
1
TYPICAL — CRANKSHAFT INSTALLED IN UPPER
HALF CRANKCASE
1. Crankshaft inner seal on PTO side
2. Crankshaft inner seal on MAG side
– Check weep hole below coolant pump housing
with soapy water.
A32C1JA
1
1. Weep hole
If there is a leak, it indicates that a pump shaft is
defective (oil seal beside coolant ceramic seal).
– Leaks can be also on oil pump side. Check
mounting area for leaks.
A32C1GB
1
TYPICAL
1. Check mounting area
– If leak still persists, it indicates a defective cast-
ing somewhere in engine.
Disassemble engine and carefully check for de-
fects in castings. Pay attention to tapped holes
whichmaygothroughenginesealedareaand
thus lead to leakage.
FINALIZING REASSEMBLY
After reassembling engine, always recheck for
leakage.
mmr2005-068 49
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