6.
Install emergency piston O-Ring (10).
7.
Install filter assembly (7) in emergency (supply)
port.
8.
Install seat (4) on piston.
9.
Install O-Ring (2) on piston.
10. Install O-Ring (8) in upper bore of body.
11. Install sealing ring (6) in groove of body.
12. Install relay piston (3) in cover. (Boss on cover
will fit bore in piston.)
13. If so equipped, install piston return spring (5)
14. Install cover to body, make certain cover is
in previously marked position. Torque cap
screws to approximately 100 inch pounds.
15. Install emergency piston and inlet/exhaust valve
insert in body.
16. Install O-Ring (24) in body.
17. Install spring (23) in body.
18. Install exhaust diaphragm (28), washer (29) and
screw (30).
19. Install small O-Ring (22) in exhaust cover.
20. Install check valve (20) and spring (21). Spring
will fit in groove in cover.
21. Install exhaust cover (25) install cap screws
and lockwashers, torque to approximately 100
inch pounds.
22. Check valve as outlined in "Operating and
Leakage" check sections before placing vehicle
in service.
Exploded View
Figure 4.
8-8
