4-18 PUMP, PIPING, AND VALVES - Continued
4-18.5 Water Tank Valve - Continued
Install the microswitch bracket (4) and microswitch wiring
support clamp (3) using screws (5).
Install both shuttle valves (2) as detailed in Shuttle Valve
Install microswitch (1) as detailed in Microswitch Repair
Attach microswitch cam (13) to actuator shaft using screw
Be sure valve operates. Operate from cab (mode switch set
to CFR) and from structural control panel (mode switch set o
STRUCT). Tighten/remake connections as required.
Be sure cab lamp illuminates when valve is open. Adjust
microswitch as required.
While supporting the actuator assembly (1), remove the four
machine screws (2).
Separate the actuator assembly (1) from the valve extended
hinge pin (5).
Using mechanics wire support actuator assembly (1) from
frame side member.
Remove four locknuts (6) and capscrews (7) Discard
Separate the pipe flanges (8 and 9) and lower valve (4).
Clean pipe flanges (8 and 9) and inspect for cracks or
corrosion. Replace pipes as necessary.
Apply gasket eliminator (item 14, Appendix E) to pipe flanges (8 and 9).
Separate the two pipe flanges (8 and 9), allowing enough room to install the valve (4) without disturbing
the gasket eliminator.
Install valve (4) between the two pipe flanges (8 and 9) with flow arrow pointing away from the tank.
Apply threadlock liquid (item 29, Appendix E) to capscrews (7).