TABLE OF CONTENTS
Peterbilt Motors Company iii
Exhaust Single Vertical ISL-G or ISL12-G Only 3-54
PTO CLEARANCES 3-55
SECTION 4: BODY MOUNTING
INTRODUCTION 4-1
FRAME RAILS 4-1
CRITICAL CLEARANCES 4-2
BODY MOUNTING USING BRACKETS 4-3
Brackets 4-4
Mounting Holes 4-5
Frame Drilling 4-6
BODY MOUNTING USING U–BOLTS 4-7
Rear Body Mount 4-9
SECTION 5: FRAME MODIFICATIONS
INTRODUCTION 5-1
DRILLING RAILS 5-1
MODIFYING FRAME LENGTH 5-1
CHANGING WHEELBASE 5-1
CROSSMEMBERS 5-2
TORQUE REQUIREMENTS 5-3
WELDING 5-3
SECTION 6: ELECTRICAL 389 FAMILY
CONTROL UNIT IDENTIFICATION 6-1
Functional Description-Instrumentation Control Unit / 6-1
Cab Electronic Control Unit (ICU/CECU) 6-1
Electronic Service Agent (ESA) 6-2
Models–Build Dates Identification 6-2
Identification 6-2
HOW MULTIPLEXED INSTRUMENTS WORK 6-6
Introduction 6-6
Central Instrument Cluster 6-7
ICU/CECU Architecture 6-9
Power On Self-Test 6-10
Commercial Vehicle Smart Gauges (CVSG) 6-10
Instruments and Controls Operation 6-11
TRANSMISSION BACK UP SIGNALS 6-14
JUNCTION BOX 6-14
J1939 6-15
SECTION 7: ELECTRICAL 579 FAMILY
INTRODUCTION 7-1
BODY BUILDER CONNECTION POINTS 7-2
Harness Design 7-2
Remote Throttle and Remote PTO Control 7-2
Spare Power 7-2
Air Solenoid 7-2
Cab Switch Backlighting 7-2
Electric Engaged Equipment 7-3
Air Solenoid Bank and Chassis Node 7-3
Rear Axle Controls and Sensors 7-4
Location Diagrams for Various Connectors on the Frame 7-5
INSTALLING ADDITIONAL SWITCHES ONTO THE CHASSIS 7-10
INSTALLING ADDITIONAL GAUGES ON THE DASH 7-11
