3.10 Lubrication system
3.10.1 Oil pressure regulating valve
If the pressure of the engine lubricating oil is insufficient or varies, the oil level and then the oil pressure
regulating valve need to be checked.
Procedure
1.
Remove the cover and the spring with the
valve plate.
2.
Clean the parts and check that the sealing
surfaces are undamaged.
Damaged parts must be changed.
NOTE: There are two types of spring.
3.
Scrape off any remains of the gasket.
4.
Apply locking fluid (for example Loctite 638)
onto the outside of the valve seat.
5.
Tap the new valve seat into the cylinder
block using a suitable drift.
6.
Fit the spring with valve plate into the
cylinder block and fit the cover with a new
gasket.
Fig. 73
(1) Loctite 638
3.10.2 Removing and dismantling lubricating oil pump
Procedure
1.
Drain the engine oil and remove the oil
sump.
2.
Remove the oil pump suction and pressure
pipe.
3.
Remove the oil pump together with any
shims between the pump and the cylinder
block.
4.
Remove the pump cover and the gasket.
Remove the gear on the dead axle.
5.
Clamp the pump gear across the teeth in a
vice fitted with soft jaws, and loosen the
drive gear nut.
6.
Knock the gear wheel off by hitting the end
of the shaft with a soft hammer.
7.
Pull out the drive shaft gear wheel.
8.
Clean the parts and check for wear and other
damage.
9.
Change damaged parts and all seals.
NOTE: The bearing points are provided with
separate bearing bushings in the 66-, 74-, 84-
and 98-engines. If you change the bushings,
machine them to the correct size after fitting.
Fig. 74
3. Maintenance
4th Generation Engines 3-45
8370 79492
To Next Page
Loading...
