TROUBLESHOOTING
TESTING AND ADJUSTING
1Oc. FUEL CONTROL RESPONSE WHEN THE ENGINE IS STARTED IS NOT ACCEPTABLE
Cause Correction
Low Governor Oil Pressure
Remove, drain and clean the governor. Make sure air is
not held in
the oil supply. Change the oil and make a replacement of
the filter.
Inspect the governor oil pressure relief valve. Make
replacement if necessary.
Inspect pump check valves (if so equipped). Make
replacements if necessary.
Inspect governor oil pump. Make repairs as necessary.
10d. ENGINE HAS SLOW RESPONSE TO A CHANGE IN SPEED SETTING OR LOAD
Cause
Correction
Compensation Needle Valve
Adjust the needle valve.
Closed Too Far
Engine Has an Overload
Decrease the load.
Operation of Buffer Piston is Not
Remove, drain and clean the governor. Make sure air is not held
in
Smooth
the oil supply. Change the oil and make a replacement of the
filter.
Oil Does Not
Drain Correctly
Make sure governor drain passages have no restrictions.
From the Governor
Low Governor Oil Pressure
Remove, drain and clean the governor. Make sure air is not held
in the oil supply. Change the oil and make a replacement of the
filter.
Inspect the governor oil pressure relief valve. Make a
replacement if necessary.
Inspect pump check valves (if so equipped). Make replacement if
necessary.
Inspect governor oil pump. Make repairs as necessary.
Wrong Buffer Springs in Gover-
Install correct buffer springs.
nor
Engine Fuel System Has a Failure
Use the FUEL SYSTEM section of TESTING AND ADJUSTING
as a reference. Make repairs as necessary.
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