User's Manual

2
ENGINE SIDE FIGURE 1
Port Ident. on
No. Casting Function
1 Frt. Sup. Supply from No. 2 circuit reservoir.
Blue
2 Park Sup. Delivers air from double check valve
Red area to spring brake relay valve (R-8).
3 Rear Sup. Supply from No. 1 circuit reservoir.
Green
4 Rad. Fan Delivers protected air supply from
Blk. PR-4 valve. Suggested use - air
operated fan clutch.
5 Diff. Lock Connects directly to port No. 9 (Fig.
Blk. 2) in cab. Suggested use - manifold
connection to differential lockout
mechanism. This is a 90
0
pass-through
passage.
6 Trl. Sup. Connects directly to port No. 10 in
Yel. cab. Suggested use - deliver air from
trailer supply valve (such as BW PP-7)
to trailer. This is a 90° pass-through
passage.
7 (None) Connects directly to port No. 11 in
cab. Suggested use - any auxiliary
manifold function. This is a straight
through passage.
8 Air Rest. Connects directly to port No. 12 in
Blk. cab. Suggested use - air cleaner
restriction gauge. This is a straight
through passage.
9 Prk. Del. Connects directly to port No. 8 (Fig.
Red 2) in cab. Suggested use - deliver air
from park control valve to spring
brake control valve (SR-1
™
valve).
This is a straight-through passage.
10 Spg. Brk. Connects to secondary circuit reservoir
Rest. - Grn. and to port No. 4 (Fig. 2) in cab.
Suggested use - supplies secondary
reservoir air to the balance port of the
SR-1 spring brake control valve.
Port Ident. on
No. Casting Function
1 Frt. Gauge Connects to gauge for No. 2 circuit
Blue reservoir.
2 Prk. Sup. Supplies air from double check valve
Red to park control valve.
3 Rear Gauge Connects to gauge for No. 1 circuit
Green reservoir.
4 Hand Brake Supplies air from No. 2 circuit reservoir
Supply to trailer hand control valve in
Green cab. Connects with No. 10 on engine
side.
5 Access Supplies protected air from PR-4
™
valve
Blk. to any accessory control in cab.
6 Access Supplies protected air from PR-4
™
valve
Blk. to any accessory control in cab.
7 Trl. Sup. Supplies air from double check valve
Red to trailer supply valve (tractor
protection).
8 Prk. Del. Receives air from delivery of park
Red control valve to deliver to SR-1
™
spring
brake control valve. Connects with No.
9 on engine side.
9 Diff. Lock Receives air from delivery of differen-
tial lockout control valve. Connects
with No. 5 on engine side.
10 Trl. Del. Receives air from trailer supply valve
(tractor protection) to supply trailer.
Connects to No. 6 on engine side.
11 (None) Auxiliary manifold for any accessory
function connects to No. 7 on engine
side.
12 Air Rest. Suggested use - air cleaner restriction
Blk. gauge. Connects with No. 8 on engine
side.
NO.1
NO.4
NO.2
NO.3
NO.9
NO.8
NO.7
NO.6
NO.5
1234
5
67
8
910
11 12
CAB BULKHEAD SIDE FIGURE 2