GM Bus Coach Model PD-4106 Service Maintenance Manual

Description

This 430 page, GM Bus Coach Model PD-4106 Service Maintenance Manual is a high quality reproduction of the original out of print publication.  It was originally published in 1961. This manual provides detailed service information, step-by-step repair instruction and maintenance specifications for Model PD-4106 GM Coach Model Buses.

This manual contains complete service, maintenance, and repair information on GM InterCity Coach Model PD-4106. Information in this manual pertains to standard equipment and the most commonly used special equipment. Operation of the vehicle from the standpoint of the driver is contained in a separate Operating Manual. For information on the Diesel Engine, refer to the current Diesel Engine Maintenance Manual.

Every effort has been made to include timely and adequate information on the various units and systems used on the PD-4106 Coach. The maintenance and repair procedures in the various manual sections are the result of extensive service experience. This information should serve not only as a reference for the experienced mechanical force, but also as a comprehensive text for training purposes. All information contained in this manual is based on the latest product information available at the time of publication approval. GMC Truck and Coach Division reserves the right to make product changes at any time.

GENERAL INFORMATION ABOUT THIS MANUAL
MANUAL ARRANGEMENT
This manual is divided into major sections in the sequence shown on the margin of the title page. A black tab bearing the major section number is placed on the first page of each major section which indexes with the tab on the title page. Many of the major sections are divided into sub-sections, each sub-section containing important and specific information on related units or components. When a major section is divided into sub-sections, a section index appears on the first page of the major section.

PAGE AND ILLUSTRATION NUMBERS
The manual pages are numbered consecutively within each major section. Illustrations are numbered consecutively within each section, or within each sub-section when the major section is so divided.

SPECIFICATIONS
Service data, fits, and tolerances are listed at the end of most sections or sub-sections under the heading “Specifications.” Manufacturers model or part numbers are used in many instances in the “Specifications” tabulation. These numbers are provided primarily for unit identification and should be referred to when ordering parts. All detail service part numbers must be obtained from the applicable Parts Book.

SPECIAL TOOLS
Special tools and equipment are mentioned, and in many instances illustrated, throughout the text. These tools are specially designed to accomplish certain operations efficiently and readily. Such tools arc identified in the text by tool vendor’s numbers. These tools are not offered for sale by GMC Truck and Coach Division. Information regarding availability of these tools can be obtained from your GM Coach Service Representative or from the Factory.

Table of Contents
Front Axle
Rear Axle
Body
Brakes
Clutch
Cooling
Electrical
Engine
Fuel
Lubrication
Air Suspension
Steering
Transmission
Propeller Shaft
Hubs, Wheels, and Tires
Air Conditioning

Alphabetical Index of Topics
Accelerator and Linkage ………… .
Adjustments
Accelerator Linkage ………….. .
Bearing, Wheel …………….. .
Brake, Parking …………….. .
Brake, Air •……………….
Clutch Controls …………… .
Control Valve, Booster Cylinder
(Steering) ……………… .
Expansion Valve, Refrigerant …… .
Governor, Air Compressor …….. .
Headlights ………………. .
Height Control Valve …… .
Regulator, Voltage . . . . . . . …. .
Reverse Solenoid Linkage. . . …. .
Ride Height (Suspension) …. .
Steering Gear …………….. .
Toe-in, Front Wheel …………. .
Transmission Controls ……….. .
Air Cleaners ………………. .
Air Conditioning …………….. .
Air Suspension …………. .
Alarm System, Tell-tale ……. .
Alignment, Front End ….. .
Antifreeze ……………. .
Axle, Front . . . . . . . . . . . . . …… .
Axle, Rear
Batteries …………. .
Bellows, Air (Suspension) .. .
Bleeding Hydraulic System
(Power Steering) ……………. .
Body ………………. · ·.
Brakes
Air Brakes ………… .
Air Compressor and Governor
Parking Brakes
Cables, Battery . . . . 7-34
Camber, Front Wheel 1-1
Caster, Front Axle . . . . . . 1-1
Chambers, Brake . . . . . . . . . . . . . . . . . 4-21
Check Valve
Air Compressor Discharge Line ….. .
Air Suspension ……………. .
Auxiliary Air System ………… .
Double Check (Air System) ……. .
Chime, Passenger Signal ……… .
4-7
14-15
4-10
4-21
3-19
Circuit Breakers …………… .
Clutch and Controls
Clutch, Refrigerant Compressor Drive
Compressor, Refrigerant ……. .
Condenser (Refrigerant) .
Page No.
26-47
26-30
26-19
Cooling System …..
Cylinder
Air, Clutch Release
Air, Engine Control ……. .
Air, Fast Idle ……….. .
Booster, Power Steering
Clutch Control Air (A/ C Compressor
Drive)