Maintenance
3303−2/A1
Winterthur Gas & Diesel Ltd.
3/ 7
4. Top Bearing Shell −
Inspection
WARNING
Injury Hazard: Before you
operate the turning gear,
make sure that no
personnel are near the
flywheel, or in the engine.
1) Unlock the turning gear.
2) Use the turning gear to turn the crank
to fuel side until the crosshead is
appoximately 300 mm above the plug
bore center (see Fig. 4).
Note: Fig. 4 shows an engine with
electric Balancer (iELBA). Use two
supports 94322 for engines
without balancer.
3) Put a small quantity of clean oil on the
four bolts(1, 4).
4) Attach the two supports (2x 94322 or
for iELBA: 1x 94322A and 1x 94322)
with the four bolts (1, 4).
5) Torque the four bolts (1, 4) to 300 Nm.
6) Use the turning gear to lower
crosshead for 140 mm (160 mm above
plug bore center).
7) Tighten the special screws (2, 3) on
each support.
8) Put the chain of the manual ratchet
(H3, Fig. 5) around the connecting
rod (1).
9) Use the turning gear to turn the crank
to fuel side. Keep the tension on the
manual ratchet H3 to prevent .
10) Make sure there is no load on the
corners (X) of the bearing shell (10).
11) Turn the crank to 100° after TDC.
12) Examine the bearing shell (10).
2016−02
Bottom End Bearing − Removal, Inspection and Installation
Fig. 4
WCH02423
10
H3
1
X
X
2
Fig. 5
WCH03208
94322
2
94322A
3
160 mm
1
4
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