Operation Manual

Table Of Contents
Job Card No.:
Engine:
Filing No.:
Piston
Refitment
0178-07-10 1339
© 0983
Job:
Mount suspension device (1) on piston (5). Make
sure that joint of spring in conformable oil control
ring is displaced by 180° relative to ring gap. Install
rings by pliers, beginning with the oil control ring,
and evenly distributing the ring gaps around the
piston periphery. Apply ample oil to piston skirt and
rings. Fit ring compressor (2) in place and tighten
wingnut (6) while knocking the band on alternate
sides with the hands. This is to ensure that the rings
are properly seated in their grooves.
Turn respective crankpin to TDC and remove protec-
tive wrapping. Apply an ample amount of oil to liner,
crankpin and running surface of top big-end shell.
Install shell in big-end. To guide the piston, a pipe
can be placed on suspension device (1). Check that
big-end marking faces the crankcase door.
Introduce piston/rod assembly into liner, taking care
that the big rod end will not damage the liner. While
introducing piston further into liner, check that ring
compressor (2) is squarely seated on the inner liner
shoulder, thus preventing breakage of the rings. Lo-
wer piston/rod assembly still further until the big-end
settles with the top shell on the crankpin. Remove
suspension device (1) and compressing tool (2). For
big-end bearing assembly, see Job Card 02.06.01.
If removed, refit piston coolant nozzles in their
original location as marked by their cylinder
Nos. Check nozzle alignment by test pin (Job
Card 02.15.01).
Observe running-in instructions, Section 4.6.
02.14.01 Page 1 of 2
S/BVM 628
Job Cards:
- 01.09.01
- 02.06.01
- 02.10.01
- 02.10.02
- 02.12.01
- 02.15.01
- 03.02.01
Tools:
- Suspension device (Section 1.8),
- Ring compressor (Section 1.8),
- Ring pliers (Section 1.8),
- Hoist.
To begin with check, maintain and measure
rings as under Job Cards 02.10.01 and
02.10.02. Inspect liner (Job Card 03.02.01).
Matching of rings to grooves: see Job Card
02.10.01.
If piston/rod assembly was dismantled, see
Job Card 02.12.01.
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