MAK M20 - Removing the Big-End Bearing Cap; Removing the Bearing Shells

Big-End Bearings
Inspection / Disassembly
A5.05. 02.04.01.00
15000, 30000
M20
en / 30.05.2000 IB021344 3/3
02
Ĺ
2. Removing the big-end bearing cap
2.1 Turn crankshaft into a convenient
position for removing (crankpin 20°
before of TDC to the camshaft side).
2.2 Loosen big-end bearing bolts and
screw out off connecting-rod big end.
2.3 Lift bearing cap out of the crankcase.
2.4 Check the toothing in the joint faces of
connecting rod, big-end bearing cap
and thread for damage.
3. Removing the bearing shells
3.1 Move piston to TDC position, fit piston
suspension device (Fig. 3/W1) and
move crankshaft carefully to camshaft
side until the piston rests on the
suspension device and the crankpin
swings out of the connecting-rod big
end.
3.2 Remove bearing shells from crankpins.
3.3 Bearing shells, rating/replacement
criteria:
• AL groove bearing: 02.03.09.nn.
W1
Fig. 3