D1146/D1146TI/DE08TIS
MAINTENANCE MANUAL
105
Printed in Jan. 2001 PS-MMA0415-E1A
4.2.3. Diagnostics and troubleshooting
Complaints Possible causes Corrections
1. Oil consumption
excessive
z Poor oil z Use suggested oil
z Oil seal or packing
leaky
z Replace
z Pistons or piston rings
worn
z Replace pistons and/or
piston rings
z Cylinder liner worn z Replace cylinder liner
z Piston rings sticking
z Replace pistons and/or
piston rings
z Valve guide oil seals or
valve guides, or valve
stem worn
z Replace
2. Oil pressure too low z Poor oil z Use suggested oil
z Relief valve sticking z Replace
z Restrictions in oil pump
strainer
z Clean strainer
z Oil pump gear worn z Replace
z Oil pump feed pipe
cracked
z Replace
z Oil pump defective z Correct or replace
z Oil pressure gauge
defective
z Correct or replace
z Various bearings worn z Replace
3. Oil deteriorates
quickly
z Restriction in oil filter z Replace filter element
z Gases leaking
z Replace piston rings and
cylinder liner
z Wrong oil used z Use suggested oil
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