GILLIG LOW FLOOR, Руководство по обслуживанию

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22
Air System
7. While depressing spring seat (5), remove retaining ring (4). Remove spring seat (5) and coil
spring (6). Caution: Before proceeding with the disassembly, refer to Figure 28 and note that the
lock nut (7) and stem (22) are used to contain the primary piston return spring (12), stem spring
(9), and the relay piston spring (27). The combined force of these springs is approximately 50
pounds and care must be taken when removing the lock nut as the spring forces will be released.
It is recommended that the primary piston and relay piston be manually or mechanically con-
tained while the nut and stem are being removed.
8. Using a 3/8" wrench, hold the lock nut (7) on the threaded end of the stem (22). Insert a screw -
driver to restrain the stem, remove the lock nut (7), spring seat, (8) and stem spring (9).
9. Remove adapter (13) and O-ring (14). Remove the primary piston (11) from adapter (13) and O-
ring (10) from the primary piston (11).
10. Remove the relay piston
(24), relay piston spring
(27), primary piston (11) and
primary piston return spring
(12) from the upper body.
Use care so as not to nick
seats.
11. A small washer (26) will be
found in the cavity of the
lower side of the primary
piston (11).
12. Remove the large and small
O-rings (23 & 25) from the
relay piston (24).
13. Remove the retaining ring
(28) securing the primary
inlet and exhaust valve as-
sembly (29) in the upper
body and remove the valve
assembly.
30
2
3
4
5
6
7
8
9
10
11
13
12
14
1
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Figure 6-28, Exploded View, E-10R Brake Valve