Operation Manual

Table Of Contents
Job Card No.:
Engine:
Filing No.:
Crankcase Relief Valve
0178-01-10 1101
© 0985
03.01.01
S/BVM 628
Inspection
Inspect gaskets of crankcase doors and test relief
valves.
Following removal of doors (1) with valves (4)
inspect liner seals between water jackets and
crankcase interior. Prime lubricating circuit
and check that all bearings are supplied with
oil. Clean oil sump from any sludge.
Job:
Unscrew hex. bolts (3) and remove door (1) with relief valve (4). Press valve by hand from inside and release.
If disk plate (6) jams when pushing or if the screw spring (10) prevents the plate from pressing back against
the 0-seal (7), dismantle and clean the relief valve.
Servicing
Dismantling the aRelief Valve
Unscrew hex. bolts (14) and remove sealing rings (13). Unscrew cheese-head screws (9) and remove round
flange gasket (11) and ring carrier (8) with 0-seal (7). Disk plate (6) and spring(10) are beared in relief valve
housing (4). Replace any defective part.
Before reassembling, check round flange seal (11), gasket (2), and 0-seal (7) and replace, if required.
Tighten hex. bolts (3).
Tools:
- Standard tools
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