Oil Seal Rings; Camshaft - Kohler KD 425-2 Workshop Manual

X
CHECKS AND OVERHAUL
28
29
inlet/exhaust
30
31
- 24 -
injection feeding pump
During grinding take care not to remove the shim
adjustment material from the main journal thrust face to
avoid changing the crankshaft end float; also ensure that
the grinding wheel radii are as specified in figure 28 so as
not to create crack initiation sections on the crankshaft.

Oil seal rings

Check that the rings have not hardened around the internal contact
edge and that they show no signs of cracks or wear.

Camshaft

Check the cams and bearing journals for scoring and wear. Measure
the dimensions and compare them to the values in the table below
and shown if figures 30-31.
Camshaft dimensions fig.30.
Measurement
Cam
Timing
Injection
Fuel pump
Assembly clearance between the journals and their housings should
be (fig.31):
Measurement
E
F aluminium crankcase
F cast iron crankcase
Renew the camshaft if the cams or journals show wear in
excess of 0.1mm.
KD 425-2 Workshop Manual_cod. ED0053029360_1° ed_ rev. 00
Dimensions mm
A B 34,69 ÷
C 34,98 ÷
D 25,50 ÷
Clearance mm
0,025 ÷ 0,065
0,07 ÷ 0,105
0,04 ÷ 0,075
34,74
35,02
25,70