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Просмотр инструкции снегоходы Ski Doo MX Z 2005, страница 896
Section 02 TROUBLESHOOTING GUIDE
Subsection 02 (ENGINE (4-TEC))
LUBRICATION
Symptom: LOW OR NO OIL PRESSURE.
1. Check oil level and search for leakage on crankcase and/or sealing parts.
- Oil drain plug on engine bottom is loosed and/or gasket ring is missing. Retighten the plug and/or
place gasket ring.
- Control bore if oil leaks (beside thermostat housing). Oil leaking from control bore means a dam-
aged oil seal on water pump shaft. Replace oil seal (refer to COOLING SYSTEM).
- Crankcase is leaking due to damage. Rebuild engine with new crankcase and gasket parts. Use
recommended oil (refer to TECHNICAL DATA).
- Crankcase is leaking due to loose screws. Retighten screws with recommended torque.
- Sealing rings, O-rings and/or gaskets are brittle and/or hard or damaged. Replace damaged parts.
- Piston rings worn out (blue coloured engine exhaust emission). Replace piston rings (refer to
CRANKSHAFT/DRIVE GEARS).
- Piston rings are broken (low compression). Replace piston rings (refer to CRANKSHAFT/DRIVE
GEARS).
- Valve stem seal damaged and/or sealing lip is hard and/or brittle. Replace all valve stem seals.
2. Check oil pressure switch function.
- Oil pressure switch damaged. Replace oil pressure switch.
3. Check oil orifice(s) on the oil pump suction side.
- Oil orifice(s) is(are) clogged. Clean from contamination. Replace oil and oil filter if necessary
(refer to MAINTENANCE or LUBRICATION SYSTEM).
4. Check oil pump function.
- Oil pump rotor is out of wear limit. Replace oil pump shaft (refer to LUBRICATION SYSTEM).
- Oil pump seized due to oil leakage and/or air inclusion. Replace oil pump (refer to LUBRICATION
SYSTEM).
- Gears driving oil pump are broken or otherwise damaged. Replace gears.
- Incorrect oil being used. Use recommend oil (refer to TECHNICAL DATA).
5. Check oil pressure regulator valve (spring) function.
- Valve spring damaged (valve always open). Replace spring.
- Valve piston is stuck in oil pump housing. Repair valve piston.
6. Check plain bearings in crankcase for heavy wear.
- Plain bearings out of specification (increased clearance). Replace plain bearings.
Symptom: OIL CONTAMINATION (WHITE APPEARANCE).
1. Check control bore (beside thermostat housing) if water and oil leaks.
- Leakage of oil/water mixture from bore means damaged water pump seal ring and rotary seal.
Replace sealing ring, rotary seal and change oil, oil filter and/or coolant (refer to LUBRICATION
SYSTEM, COOLING SYSTEM and CRANKCASE).
2. Check cylinder head and/or cylinder base gasket.
- Gasket damaged or leaking. Retighten cylinder head with recommended torque and/or replace
gasket.
3. Check tightening torque of cylinder head screws.
- Screws not properly tightened. Retighten screws to recommended torque and replace oil.
18 mmr2005-020
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