Spicer TPCS (Tire Pressure Control System) Service Manual - Manual (Page 38)

38
Non-Drive Axle Wheel End
Service
Note: Work quickly to minimize air loss during steps
5-10.
5. Remove valve stem core from inner tire and install
hose end on valve stem.
6. Remove valve stem core from outer tire and install
hose end on valve stem.
7. Install outer hose on run tee. Torque to
16–19 lbs. ft. (22–26 N•m).
8. Install inner hose on branch tee. Torque to
16–19 lbs. ft. (22–26 N•m).
9. On single tire only: lubricate O-ring then install tire
hose on wheel valve. Torque to 16–19 lbs. ft.
(22–26 N•m).
10. Remove valve stem core from tire and install hose
end on valve stem.
Note: When repairs on Wheel Valve have been com-
pleted, the servicing technician should assure proper
system function before putting vehicle back in service.
As a minimum, the system should be inflated using the
operator control panel to achieve the highway loaded
setting and then deflated until the off-highway loaded
setting is achieved.
Caution: The Spicer Pressure Control
System has the ability to maximize the vehicle’s
equipment and conditions. Replacement of
components may temporally change to levels
lower than you expect before the system adjusts
to the changes. Therefore, the following procedure
is necessary before returning the vehicle to service.
1. Attach the male section of the adapter fitting to the
wheel valve inlet port and torque to 16–19 lbs. ft.
(22–26 N•m).
2. Apply a thin coating of lubricant to the male section
of the adapter fitting and place the fitting into the
receiver of the hubcap.
3. Secure the wheel valve to the hubcap with the wheel
valve retaining bolt and torque to 15 lbs. ft. (20 N•m).
4. If wheel valve is to service a dual set of tires, prepare
the wheel valve in the following manner.
If only servicing a single tire proceed to step 9.
Caution: Follow Spicer recommended procedure
for installation of fitting to assure the air filter is
not damaged.
A. Lubricate O-ring.
B. Secure lock nut against the O-ring washer.
C. Install the tee into the valve until the O-ring is
seated and the washer is against the face of
the valve.
D. Back off lock nut.
E. Turn tee clockwise to orient fitting – no more than
one turn.
F. Tighten lock nut 16–19 lbs. ft. (22–26 N•m).
!
Figure 24 Run Tee
Washer
O-ring Valve
!