92 TD410023-B RLF
1
SPECIFICATIONS
1. Warm up the engine.
2.
7 mm: Remove the wire harness on the oil
pressure switch
1
.
3.
24 mm: Remove the oil pressure switch.
CAUTION! Scalding caused by hot engine oil.
Wear protective gloves.
4. Install the adapter M10x1 for oil pressure tester
according to the manufacturer's instructions.
Tightening torque:
9 Nm +2 Nm [6.6 lbf ft +1.5 lbf ft]
5. Start the engine and allow to run at idle.
6. Measure the oil pressure using the oil pressure
tester according to the manufacturer's
instructions.
Required oil pressure at idle:
At least 1,5 bar
Maximum 5,5 bar +0,5 bar
7. Increase the engine speed.
The oil pressure increases immediately.
Required oil pressure at 3000 min
-1
[RPM]:
At least 2,5 bar
Maximum 5,5 bar +0,5 bar
8. Remove the adapter M10x1.
9.
24 mm: Install the oil pressure switch
according to the specification Oil pressure
switch. (See section D Tightening torques und
assembly instructions.)
OIL PRESSURE
The oil pressure is too low.
no
Replace the oil
pressure valve.
yes
The oil pressure
valve is always
opened.
no
Replace the
oil pressure
pump.
yes
The oil pressure
pump is defective.
Clean the
lubrication
system.
yes
Oil sludge
and soiling in the
lubrication system.
no
yes
Leaks in the
lubrication system/
cylinder head gasket.
Repair the
leaks.
Replace the oil pressure
valve.
Oil pressure > 5,5 bar +0,5
bar
Oil pressure troubleshooting guides:
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