64
Model Code Page
21. Engine
1. 4. 1997
6000--8750
213 8
15. 5. 1996
C. Fitting balancer unit
1. Fit the tension pins in the balancer unit body.
2. Turn the crankshaft and weights so that the markingsagree,
and lift the unit into place.
3. Tighten the bolts to 60 Nm. Check that the tooth backlash
between the crankshaft and counterweight is 0,1 --- 0,3 mm.
The backlashcan be increasedby placing shims0,2 mm thick
(order no 8361 19920) between the cylinder block and ba-
lancer unit body. One shims (0,2 mm) changes tooth back-
lash about 0,07 mm.
4. Fit the lubricating oil pipe, using new seals.
5. Fit the engine.
4. Rubber vibrations damper on
8000R, 8000, 8100, 8400 and
8050---8150
The outer circumference of the vibration damper (belt pulley)
no 8368 46440 can twist in relation to the hub. For this reason
alignment marks have been added to t he damper front face,
which indicate the possible twisting.
If the twisting has occured and the difference of the alignment
marks is more than 1,5 mm, the vibration damper should be
changed.
Note! On engines, that do not have the alignment marks, the
condition of the vibration damper is checked according to
instruction A. The damper should be changed at intervals o f
4000 running ho urs.
A. Checking element of the rubber damper
1. Check the alignment marks (A) on both sides of the rubber
element. If the difference is more than 1,5 mm, change the
damper for a new one.
2. Chec k also t he condition of the rubber element:
--- If rubber pieces have been loo s ened from the element or
--- if rubber has been pressed to the depth of more than 3,5
mm or
--- if the outer circumferenceis slackor it movesin thedirection
of the shaft, change the damper
Note! On 8200 tractor there is a viscous vibration damper,
which does not require maintenance. However, check that the
damper does not have flaws caused by external shocks. Trac-
tors 8450, 8550 and 8750 have also the viscous damper.
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