Maintenance4325−1/A1
Winterthur Gas & Diesel Ltd.
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5. Assembly
1) Make sure that all the bores are clear.
2) Remove grease from the surface of the spindle (5, Fig. 2).
3) Apply a thin layer of Molykote paste to the stopper (11), the spring (14) and the
valve body (9).
4) Put the O-ring (12) and valve body (15) into the housing.
5) Put the stopper (11) and spring (14) into the valve guide (10), then attach the
valve guide to the housing with the two M12x50 screws (13).
6) Torque the two M12x50 screws (13) to the value given in 0352−2, paragraph 1.
7) Apply Molykote paste to the bore of spindle nut (17). Put the spindle nut on the
spindle (5).
8) Apply Loctite 0243 to the threads of the spindle nut (17).
9) Put the spindle (5) and spindle nut (17) into valve (9).
10) Attach the valve (9) together with spindle (5) and piston joint ring (18) to the
housing.
11) Apply Molykote paste to the inner cylinder of the cover (6).
12) Put the spring (8) on to the spindle (5) in the cover (6).
13) Attach the cover (6), spring (8) and spindle (5) to the housing with the six M24x70
screws (7).
14) Torque the six M24x70 (7) to the value given in 0352−2, paragraph 1.
15) Install the handwheel (7).
16) Attach the control valve (2) to the cover (6) with the two M24x90 bolts (4).
17) Torque the two M24x90 bolts (4) to the value given in 0352−2, paragraph 1.
18) Put the piston (22), valve (21), spring (20) and screw plug (19) in position in the
control valve (2).
Note: When you do the step below, look through the hole in the control
valve (2).
19) Make sure that the clearance between the valve (21) and the piston (22) is
1.0 mm.
20) Attach the silencer (23) to the control valve (2).
21) Put the assembled shut-off valve in position on the engine.
22) Attach the outlet flange (not shown) to the valve guide (4, Fig. 3) with the eight
M24x50 screws.
23) Torque the eight M24x50 screws to the value given in 0352−2, paragraph 1.
2016
Starting Air Shut-off Valve: Clean and Function Check
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