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Group 22 Lubrication system
Repair Instructions
Checking lubrication oil pressure
The lubrication oil pressure can be checked by con-
necting a manometer with a hose to the connection for
the oil pressure switch (thread size in cylinder block =
1/8"). For the correct pressure at operating speed and
temperature, refer to “Technical data”.
If the oil pressure is too high or too low, first try re-
placing the reduction valve and then check the oil
pressure again.
Oil pump
Removing oil pump
1. Remove the injection pump (19). Remove the fix-
ing screws and nuts on the pump. Turn the stop le-
ver clockwise and carefully lift the pump, to make
the lock clip on the regulator arm accessible.
Remove the lock clip and free the regulator arm.
IMPORTANT! Be careful when disassembling
the injection pump, avoid damaging or bending
the lever.
NOTE! Retain any shims from beneath the injection
pump flange. Use the same thickness of shims when
re-installing, unless the camshaft, engine block or in-
jection pump have been changed.
2. Remove the pulley, use special tool 885 820 and
3 pcs. M10x40 mm bolts. Remove the timing gear
cover. Load the stop arm so that the springs on
the inside of the housing do not come out of posi-
tion or spring out.
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