Bendix Commercial Vehicle Systems E-10 DUAL BRAKE VALVES 6/10 - Manual (Page 5)

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nut, spring seat (26), rubber spring (27) and remove the
piston o-ring (28).
16. Remove the large (30) and small (31) o-rings from the
relay piston (20).
17. Remove the retaining ring (32) securing the primary
inlet and exhaust valve assembly (33) in the upper body
and remove the valve assembly.
CLEANING AND INSPECTION
1. Wash all metal parts in mineral spirits and dry.
2. Inspect all parts for excessive wear or deterioration.
3. Inspect the valve seats for nicks or burrs.
4. Check the springs for cracks or corrosion.
5. Replace all rubber parts and any part not found to be
serviceable during inspection, using only genuine
Bendix replacement parts.
ASSEMBLY
Prior to reassembling, lubricate all o-rings, o-ring grooves,
piston bores and metal to metal moving surfaces with Dow
Corning 55 M pneumatic grease (Bendix piece number
291126).
Note: All torques specified in this manual are assembly
torques and can be expected to fall off, after assembly is
accomplished. Do not retorque after initial assembly
torques fall.
1. Install the primary inlet and exhaust assembly (33) in
the upper body and replace the retaining ring (32) to
secure it. Be sure the retaining ring is seated completely
in its groove.
2. Install the large (30) and small (31) o-rings on the relay
piston.
3. Install the primary piston o-ring (28) in the piston o-ring
groove.
E-6 ™ VALVE ONLY:
4. Install the rubber spring (do not lubricate) (27), concave
side down in the primary piston (22) and place the spring
seat (26), flat side up, over the rubber spring.
5. Install the primary piston spring seat nut (25), with its
hex closest to the spring seat, and rotate clockwise
until the top surface of the spring seat is even with the
top surface of the piston. Set aside.
6. Install large (30) and small (31) o-rings on relay piston
(20).
7. Place relay piston, spring (21) (if used) in concave
portion of relay piston and install relay piston through
No. 1 inlet/exhaust assembly (33) and into under side of
upper body.
8. Place screwdriver, blade up, in vise. Place stem (17) in
relay piston upper body sub assembly over the blade of
the screwdriver with blade engaged in the slot in the
head of the stem.
9. Place the washer (24) over the stem. This washer should
be installed in all valves.
10. Install primary return spring (23) in upper body piston
bore.
11. Install the primary piston rubber spring sub assembly
(steps 4 & 5) over the stem, into the upper body piston
bore.
12. Compress the primary and relay pistons into the upper
body from either side and hold them compressed, either
manually or mechanically. See the cautionary note
under step 11 in the Disassembly section of this
manual.
13. Place the stem spring (19) over the spring seat nut (25)
and the spring seat (18) over the stem.
14. Install the lock nut (16) on the stem and torque to 20 -
30 inch pounds.
15. Install the primary piston retainer (15) over the piston,
making certain all three lock tabs have engaged the outer
lip of the body.
GENERAL SAFETY GUIDELINES
WARNING! PLEASE READ AND FOLLOW
THESE INSTRUCTIONS TO
AVOID
PERSONAL INJURY OR DEATH:
When working on or around a vehicle, the
following general precautions should be
observed at all times.
1. Park the vehicle on a level surface, apply the parking
brakes, and always block the wheels. Always wear
safety glasses.
2. Stop the engine and remove ignition key when working
under or around the vehicle. When working in the engine
compartment, the engine should be shut off and the
ignition key should be removed. Where circumstances
require that the engine be in operation, EXTREME
CAUTION should be used to prevent personal injury
resulting from contact with moving, rotating, leaking,
heated or electrically charged components.
3. Do not attempt to install, remove, disassemble or
assemble a component until you have read and
thoroughly understand the recommended procedures.
Use only the proper tools and observe all precautions
pertaining to use of those tools.