Yanmar 1GM10, Руководство по ремонту

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122 CHAPTER SIX
OIL PRESSURE REGULATOR
1. Plug
2. Shim
3. Oil pressure relief sprlng
4. Oil pressure relief ball
5.
6.
Nut
7.
8.
011 fllter
Pressure relief valve FLYWHEEL
An oil pressure relief valve is located in the oil filter
mounting pipe (Figure 57). If oil pressure exceeds
300-400 (43-57 psi), the relief valve opens and expels
1.
Remove the engine the boat.
oil into the timing gearcase.
2. Remove the transmission.
Do not attempt to disassemble the oil pressure relief
3. Remove the drive disc (Figure 59, typical).
valve. The valve is sealed and it must be replaced as a unit
assembly.
Oil pickup
The oil pickup is located in the oil pan. The pickup in-
cludes a strainer to prevent foreign matter from entering
the lubrication system.
To remove the oil pickup, remove the oil pan and un-
screw the jam nut (Figure 58).
4. Gradually loosen and remove the flywheel bolts,
working in a diagonal pattern. Install two drive disc
screws into two outer holes in the flywheel (Figure 60,
typical), then use the screws to pull and remove the fly-
wheel.
5. Inspect the ring gear. If the ring gear is excessively
worn or damaged, use the following procedure to remove
the ring gear:
a. Heat the ring gear evenly, then drive the ring gear
off the flywheel.