RedMax GZ7100, Руководство по ремонту

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CRANKCASE AND CRANKSHAFT
44 – English
Fig. 8
Fig. 7
Fig. 5
Fig. 6
A
B
!
WARNING!
The crankcase halves are hot. Risk for
burns. Use protective gloves.
A. Remove the rubber stop (A). See fi g. 5.
B. Remove the bush from the chain brake pivot (B).
See fi g. 6.
C. Remove the oil fi ller cap.
D. Warm the relevant crankcase half to 200° C in
an oven.
E. Using protective gloves take out the crankcase
half and tap it gently, with the inside towards a
wooden bench or similar, so that the bearing
drops out.
F. Fit the new bearing into the crankcase whilst it is
still hot.
9. Should the bearing have remained in place on the
crankshaft, remove it with puller 502 90 90-01.
10. If necessary, remove the following components:
A. Chain tension screw.
B. Guide bar bolts.
C. Bark gripper.
Cleaning and inspection
NOTE!
Ensure that no dirt or foreign particles enter
the bearings, if they are in place in the crank-
case.
Clean all components and scrape off the remains of gasket
material from the crankcase half mating surfaces.
Check the following:
1. The big end bearing does no have any radial play.
Axial play is acceptable.
2. The big end bearing does not have any score marks
or discoloration on the sides. See fi g. 7.
3. The little end bearing sur face is not scored or
discoloured. See fi g. 8.
4. The crankshaft bearings do not have any play or
dissonance.
5. The sealing surfaces of the crankcase seals on the
crankshaft are not worn and that the rubber has not
hardened.
6. That the crankcase does not show signs of cracking.