Spicer TPCS (Tire Pressure Control System) Service Manual - Manual (Page 22)

22
Pneumatic Service
!
11. Install the Pneumatic Control Unit. Secure unit
with 1 /
4
" x 20 mounting studs or bolts.
Note: For additional air line protection, rubber grom-
mets are installed in the cab floor. Check condition of
these grommets and replace if necessary.
12. Connect 5 /
8
" I.D. vent hose to Pneumatic Control
Unit vent using hose clamp.
13. Connect the wire harness connections to the
Pneumatic Control Unit.
14. Start the vehicle and test the Tire Pressure Control
System.
Pressure Switch
Note: Refer to Figure 11 for the following steps.
Note: The following procedure discusses replacing the
Pressure Switch.
1. Turn off the vehicle’s ignition and engine.
2. Locate the Wet Tank. The Wet Tank is the first
tank from the dryer.
Warning: Drain off air from the Wet Tank before
removing any fittings!