Maintenance2751−2/A1
Winterthur Gas & Diesel Ltd.
4/ 7
2.3 Guide bush − removal
1) Remove the four cap screws (12, Fig.
3).
2) Remove the distance ring (10).
3) Remove and discard the rod seal (11).
4) Put the jack screws (tool 94263) into
the two threads of the guide bush
flange (9).
5) Turn the jack screws equally to pull the
guide bush out of the valve cage (1).
6) Remove and discard the O-ring (37).
7) Measure the inner diameter of the
guide bush (9).
8) Compare the measurement with the
values given in 0330−1 Exhaust Valve
table.
3. Exhaust valve −
assemble
CAUTION
During this procedure, do
the work in a clean area.
Electrical welding is not
permitted.
3.1 Guide bush − installation
1) Clean the bore in the valve cage (1).
2) Clean the guide bush (9).
3) Make sure that the oil bores OB in the
guide bush (9) are clear.
4) Install a new O-ring (37).
5) Put oil on the guide bush (9) and O-ring
(37).
6) Put the guide bush (9) in position in the
valve cage (1).
7) Screw the jack screws 94263 into the
valve cage (1).
8) Push the guide bush with the nuts of
the jack screws fully into the valve
cage.
9) Install a new rod seal (11, Fig. 3) and
apply oil on it.
2015
Exhaust Valve: Disassemble and Assemble
WCH02973
WCH02972
1
37
11 10
12
WCH02972
12
94263
9
Fig. 3
10
1
9
1
OB
94263
WCH02973
37
Fig. 4
9