MAK M 20 - Maintenance

Valve Rocker
Maintenance / Disassembly and reassembly
A5.05. 01.02.02.00
30000
M20
en / 30.09.2010 IB021075 1/3
01
See also: 01.02.01.nn
Spare parts list: B1.05.01.2.2107
Time requirement: 1 Pers./ 1,00 h
Personnel qualification: skilled engine hand
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Operating medium: Heavy fuel and distillate fuel
Maintenance:
Disassemble inlet and exhaust valve rocker
and inspect the bearing clearances 30,000 h
Sequence of operations:
1. Disassembly
1.1 Disassemble valve rocker bracket
(01.02.01.nn).
1.2 Remove circlip (Fig. 1/1) and supporting
disc (2) from inlet valve rocker (3) and
exhaust valve rocker (4) and pull valve
rocker from rocker axle (5).
2. Clean all parts and check for damage.
Blow through oil holes with compressed air
and check for free passage.
NOTE
The bushes must be lubricated with oil only.
Molykote paste must not be used even on assembly.
NOTE
Further remedial measures are
identical in the case of inlet and
exhaust valve rocker.