SERVICE MANUAL
Fig. 8 Sectional View of E6 Brake Valve
1
SCREW
2
WASHER, Diaphragm
3
DIAPHRAGM, Exhaust
4
COVER, Exhaust
5
RING, Retainer
6
VALVE, Secondary & Exhaust
7
RETAINER, "O" Ring
8
WASHER
9
SPRING, Return
10
BODY, Lower Valve
11
BODY, Upper Valve
12
RING, Seal
13
PISTON, Relay
14
SPRING, Relay Piston
15
VALVE, Primary Inlet & Exhaust
16
PISTON, Primary
17
SPRING, Primary Piston Return
18
SPRING, Rubber
19
RETAINER, Primary Piston
20
SEAT, Spring
21
SPRING, Stem
22
GUIDE, Stem Spring
23
STEM
24
NUT, Spring Seat
25
SCREW, Spring Guide (Not Used)
26
PLUNGER
27
BOOT
28
TREADLE
29
PLATE, Mounting
1.
Position primary inlet and exhaust assembly in
the upper body; then install retaining ring to
secure it. Be sure the retaining ring is seated
completely in its groove.
2.
Install large and small O-rings on relay piston.
3.
Replace primary piston O-ring in piston 0-ring
groove.
4.
Position rubber spring (18), concave side down,
In primary piston and place spring seat (20), flat
side up, over rubber spring.
5.
Install primary piston spring seat nut (24) with its
hex closest to spring seat and rotate clockwise
until top surface of spring seat is even with top
surface of piston (16).
6.
Position primary piston return spring (17) in the
upper body piston bore.
7
.Install primary piston, spring seat out, over
return spring and press piston into body bore.
8.
Place relay piston return spring (14) in the upper
body and position relay piston over spring so that
the concave side of the piston is against the
spring (refer to Fig. 8).
9.
Compress both primary piston and relay piston
into the upper body and hold them compressed,
either manually or mechanically (see CAUTION
under No. 8 in DISASSEMBLY).
10.
Place stem (23) through exhaust passage of the
lower body so that threaded portion is visible at
primary piston.
11.
Use a screwdriver to engage and hold the slotted
head of stem; then position stem spring (21) and
spring guide (22) over primary piston.
12.
Install ESNA nut on stem and rotate clockwise to
2.3 - 3.4 N.m (20 - 30 in lbs) of torque.
13.
Install primary piston retainer (19) over piston
making certain all three lock tabs have engaged
the outer lip of body.
14.
Install
secondary
inlet
and
exhaust
valve
assembly in lower body.
15.
Place exhaust cover (4) on lower body and
install
four
#10-24
machine
screws
with
lockwashers; torque screws to 2.3 - 3.4 N.m (20
- 30 in lbs).
16.
Install exhaust diaphragm (3) and diaphragm
washer (2) to exhaust cover using Phillips head
screw and lockwashers.
CTS-4079-CHAPTER IV- - Page 8
