Operation Manual

Job Card No.:
Engine:
Filing No.:
Job:
Remove cylinder head (job 01.04.01) and big-end
bearing cap (Job Card 02.05.01). Place both liner
retainers (7) - Fig. 1 - on two opposite studs and
tighten annular nut (6) moderately.
Firmly screw thrust pad (11) on liner. Turn up piston
(5) until bright liner running surface is just blanked off
by piston top edge. Close gap between piston top
and liner by grease and then scrape off carbon from
liner top section without using a grinder.
Inspect reversing mark of top ring; if this mark has
become so deep that piston rings are liable to catch
here, grind mark away (Job Card 03.02.01).
Turn up piston to TDC.
Clean M 10 tapholes in piston top by means of tap
and mount removing/refitting device (1).
Carefully raise piston (5) and connecting rod by
hoist.
Do not remove the layer of carbon on the
piston crown until the piston has been remo-
ved.
During removal, check that rod big end
will not foul the piston-cooling oil nozzle.
Remove top shell. Put down piston/rod assembly in
wooden rack (9) - Fig. 2 - or between two blocks on
a wooden support.
Secure rod against rocking. Wrap non-transparent
adhesive tape, oil paper or a clean rag around crank-
pin to protect from dirt or damage.
©0199
Piston
Removal
0178-06-10 1091
02.09.01
S/BVM 628
Fig. 1
Fig. 2
Job Cards:
- 01.04.01
- 02.05.01
- 03.02.01
Tools:
- Standard tools
- Piston removing / refitting device
(Section 1.8)
- 2 liner retainers (Section 1.8),
- Tap M 10
- Hoist
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