BENDIX E-12 Руководство - Страница 8

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ASSEMBLY

1. Using the lubricant provided (Bendix Pc. No. 291126),

lightly coat all o-rings, o-ring bores and grooves. Lightly

lubricate the primary piston (2) bore into which the gradu-

ating spring (8) is installed.

2. Place the primary piston (2) on a flat surface and install

the rubber spring (9) and metal graduating spring (8).

Note: The rubber spring (9) is used in the E-12

valve only. If a rubber spring was not removed in disas-

sembly step 11, discard this component - do not

install it.

3. Install the proper graduating spring retainer (7) on top of

the graduating spring (8) making certain that the side

with the high circular protrusion is away from the spring.

4. Manually depress and hold the spring retainer (7) in the

piston (2), then install the retaining ring (6) making cer-

tain it is completely seated in its groove in the piston

(2).

5. Install the o-rings (15) on both valve assemblies (13).

6. Install the valve spring (14) in the piston (2), then install

the valve assembly (13) in the spring.

7. Install the o-ring (12) into the o-ring groove of piston (2),

then install the valve seat (11) on the valve assembly

(13). Gently depress and hold the valve seat in the pis-

ton (2) while installing the special beveled retaining ring

(10).

Important: The beveled retaining ring (10) must be in-

stalled with its flat side against the valve seat (11) and

its beveled side visible. Make certain the beveled retain-

ing ring (10) is completely seated in its groove in the

piston (2).

8. Install the o-rings (3 & 5) on the primary piston (2), then

install the wear rings (4) in the o-ring grooves next to the

o-rings. Make certain that one flange of the angular wear

ring (4) is in the o-ring groove, while the opposite flange

extends away from the end of the piston (2) and toward

the center. The wear ring flange must not cover or over-

lap either o-ring.

9. Carefully insert the assembled primary piston (2), valve

end first, into the upper valve body until the piston

retaining ring groove in the body is visible. Make certain

the o-rings (3 & 5) and wear rings (4) are not damaged in

the process. Do not force the piston. If substantial

resistance is encountered, check for proper installation

of the wear rings.

10. Install the piston retaining ring (1) in its groove in the

upper body, making certain it is fully seated in the groove.

11. Install the plunger (21) in its return spring (22). Install

the spring and plunger on the secondary piston (18).

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brake

While manually depressing and holding the plunger and

spring on the piston, slide the plunger and spring

retainer (23) into place so that it secures both the plunger

and spring to the piston. Make certain the retainer flanges

are securely around piston lip and plunger groove.

12. Install the o-rings (19 & 20) on the secondary piston

(18).

13. Install the exhaust diaphragm (25) on the lower body

and secure it using diaphragm retainer (24).

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Note: Some E-12

& E-15

exhaust ports in lieu items 24 & 25.

14. Install the valve spring (14) in the lower body, then install

the valve assembly (13) in the spring.

15. Install the o-ring (12) into the o-ring groove of piston (2),

then install the valve seat (11) on the valve assembly

(13). Gently depress and hold the valve seat in the lower

body while installing the special beveled retaining ring

(10).

Important: The beveled retaining ring (10) must be in-

stalled with its flat side against the valve seat (11) and

its beveled side visible.

Make certain the beveled retaining ring (10) is completely

seated in its groove in the lower body.

16. Install the assembled secondary piston (18) in the up-

per body making certain that the o-rings (19 & 20) are

not damaged in the process.

17. Install the o-ring (17) on the upper body. Join the as-

sembled upper and lower body halves noting the

relationship marked in Disassembly step 2. Secure the

body halves together using the four 1/4" cap screws (16)

and torque to 30 to 60 pound inches.

18. If the brake valve is firewall mounted, install the pedal

mounting plate on the basic brake valve noting the rela-

tionship marked during Disassembly step 2. Secure the

mounting plate to the valve using the three 5/16" cap

screws and torque to 80 to 120 pound inches.

19. Install all air line fittings and plugs making certain

thread sealant material does not enter the valve.

VALVE INSTALLATION

1. Install the assembled brake valve on the vehicle.

2. Reconnect all air lines to the valve using the identifica-

tion made during Valve Removal step 1.

3. After installing the brake valve assembly, perform the

Operation & Leakage Checks before placing the vehicle

in service.

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brake valves have threaded