Liangzi Power UTV1000-3, Maintenance Manual

Page: 40 / 184

3.ENGINE
3- 10
INSPECTION
ENGINE OIL PRESSURE
NOTE : The engine oil pressure test should be
Done with a warm engine100°C(212°F) and the
recommended oil.
Remove the oil pressure switch. Refer to OIL
PRESSURE SWICH in this subsection.
Use the pressure gauge with the proper adapter
hose.
The engine oil pressure should be within the fol-
lowing values.
OIL
PRESSURE
1250 RPM 6000 RPM
MINIMAL 70kPa(10PSI) 300kPa(44PSI)
NOMINAL 150kPa(22PSI) 350kPa(51PSI)
MAXIMA L
250kPa(36PSI) 450kPa(65PSI)
1f the engine oi1 pressure is out of specifications,
check the points described in TROUBLESHOOT--
INE in this subsection.
Remove oil pressure gauge and adapter hose.
NOTE: To remove adapter hose from oil pressure
gauge, use the disconnect tool.
Reinstall the oil pressure switch,
TROUBLESHOOTING
LOW OR NO OIL PRESSURE
1. Oil level is too low.
-Refill engine with recommended engine oil Refer
to OIL LEVEL VERIFICATION in the PERIODIC
MAINTENANCE PROCEDURES subsection.
-Check for high oil consumption ,refer to HIGH
OIL CONSUMPTION in the TROUBLESHOOT
-ING subsection.
-Check for engine oil leaks. For leak indicator
hole,refer to COOLING SYSYTEM
INSPECTION in the PERIODIC MINTENANCE
PROCEFURES subsection.Repair if necessary.
2. Use of unsuitable engine oil type.
-Replace engine oil by the recommended engine
Oil.
3. Clogged oil filter.
-Replace oil and oil fi1ter at the same time.
4. Defective oil pressure switch.
-Test oil pressure switch, see procedure in this
subsection.
5. Defective or worn oil pump.
-Check oil pump, see procedure in this subsection.
6. Defective engine oil pressure regulator.
Check engine oil pressure regulator ,see procedure
in this subsection.
7. Worn plain bearings in crankcase.
-Check plain bearings clearance, refer to
BOTTOM subsection.
8. Clogged engine oil strainer.
Check engine oil strainer, see procedure in this
subsection.
OIL CONTAMINATION
1. Defective water pump seal ring or rotary seal.
- Check for oil or coolant leak from indicator hole
near water pump, refer to COOLING SYSTEM
INSPECTION in the PERIODIC MAINTENCE
PROCEFURES subsection. Replace seal if
necessary.
2. Cylinder head or cylinder base gasket leak