Spicer TPCS (Tire Pressure Control System) Service Manual - Manual (Page 3)

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Section 1: Introduction
Tire Pressure Control System ............................................................................................................................. 7
Purpose and Scope of Manual ............................................................................................................................ 7
Organization of Manual ....................................................................................................................................... 7
Section 2: Operation
Component Description ...................................................................................................................................... 8
System Operation ............................................................................................................................................. 10
Air Seal Life ...................................................................................................................................................... 10
Section 3: Electrical Service
Terminal, Connector and Wire Service .............................................................................................................. 13
Splicing Wire .................................................................................................................................................... 14
Speed Sensor Repair/Replacement................................................................................................................... 15
Wiring Connections .......................................................................................................................................... 16
Configuration Connector ................................................................................................................................... 16
Relay and Power Connections .......................................................................................................................... 16
Vehicle Grounds ............................................................................................................................................... 16
Lamp Switch ..................................................................................................................................................... 16
Electronic Control Unit Replacement ................................................................................................................ 17
Operator Control Panel Replacement ................................................................................................................ 17
Operator Control Panel Back Lamp Removal .................................................................................................... 17
Pressure Transducer ......................................................................................................................................... 17
Section 4: Pneumatic Service
Service Guidelines ............................................................................................................................................ 18
Pneumatic Control Unit Replacement ............................................................................................................... 21
Pressure Switch ............................................................................................................................................... 22
Steer Axle Pneumatic Replacement .................................................................................................................. 24
Drive Axle Pneumatic Replacement .................................................................................................................. 26
Trailer Axle Pneumatic Replacement ................................................................................................................. 28
Wheel Valve Air Filter Change ........................................................................................................................... 31
Section 5: Non-Drive Axle Wheel End Service
Preparation ....................................................................................................................................................... 32
Wheel End Air Line Removal............................................................................................................................. 32
Wheel Removal ................................................................................................................................................. 32
Hubcap Removal .............................................................................................................................................. 34
Hub Service ...................................................................................................................................................... 34
Inlet Tube Removal (Steer Axles Only) .............................................................................................................. 34
Inlet Tube Installation ....................................................................................................................................... 35
Spindle Adapter Removal (Trailer Axles Only) .................................................................................................. 35
Internal Air Line Installation (Trailer Axles Only) ............................................................................................... 36
Rotary Joint, Nested Hubcap Installation .......................................................................................................... 37
Wheel and Wheel Valve .................................................................................................................................... 37
Wheel Changing Procedure .............................................................................................................................. 39
Wheel Installation ............................................................................................................................................. 39
General Information