Inspection / repair:
– Check all crankshaft bearing journals
for score-marks and incorrect dimen-
sions; for measured values, see Section 4.
Measure in two planes offset through 90
degrees.
– Check the shaft sealing ring contact
face for score-marks.
If the contact face is worn, a „wear
sleeve“ can be pushed over it. When do-
ing so, use sealant E. Assembly instruc-
tions are included with the spare part.
– Renew the shaft sealing ring in the end
cover.
– Check the bearing shells for damage
and visible signs of wear.
Installing:
– Pull the balancing-weight gearwheel on
to the crankshaft.On the 2 and 3 L ..
crankshafts, unscrew and remove the
flywheel-end counterweight; this will ex-
pose the line marking (25/1) on the
crankshaft.
Heat the gearwheel to app. 125° C and
pull it on so that the line marking (25/1)
on the crankshaft is aligned with the „O“
marking (25/2) on the gearwheel; see
Fig. 25.
On the 4 L ... crankshaft, unscrew and re-
move the flywheel-end counterweight and
manoeuvre the balancing-weight gearw-
heel into position as shown in Fig. 26.
– Apply sealant C to the straight pin
(24/1) and drive it in.
– Apply sealant D to the machine screws
and tighten them to the specified tor-
que.
Note:
From mid-1994 on, a modified gearwheel
and different retaining screws were intro-
duced. The new screws are not to be
used with the old gearwheel (Fig. 27).
On the 2 and 3 L .. engines, do not install
the counterweights again until the crank-
shaft has been placed back in the lower
part of the crankcase.
3
L / M . . 09.96
25
26
27
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