MAK M20, Operating Instructions Manual

Page: 260 / 456

Big-End Bearings
Inspection / Reassembly
A5.05. 02.04.02.00
M20
en / 07.01.2000 IB001357 1/4
02
Ĺ
See also: 02.04.01.nn
Spare parts list: B1.05.02.2.2601
Time requirement: 1 Pers./ 0,50 h
Personnel qualification: Chief engineer, skilled engine hand
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Operating medium: Heavy fuel and distillate fuel
Tools:
Torque wrench 60 - 420 Nm 3/4" W1 * 1.9454-60
Clamp W2 2.9125-A
Tightening angle gage W3 2.9180-A
Turning rod W4 * 2.9100-380
* not available as figure
Auxiliary material:
Molykote paste “G-Rapid Plus” **
** or a product of equal standard
Note:
The bearing caps, shells and bolts have been marked according to their cylinder numbers
and must not be interchanged. New parts are to be marked accordingly. Lubricant for
threads and bolt contact surfaces Molykote paste “G-Rapid Plus”.
Sequence of operations:
1. Fitting the bearing shells
1.1 Clean and oil the crankpin.
1.2 Oil the inside and outside of the bearing
shells and put them on the crankpin.
Attention:
Hole (Fig. 1/X) for the fixation of the
bearing shells at the face of the bottom
and top shell of the shell half pointing
to the clutch side.
X
Fig. 1