PREVOST GKN AXLES LIMITED KIRKSTALL DIVISION User Manual

16-1
SECTION 16: SUSPENSION
CONTENTS
1. DESCRIPTION......................................................................................................................................... 16-3
2. AIR SPRING ............................................................................................................................................ 16-4
2.1 Inspection........................................................................................................................................ 16-4
2.2 Removal.......................................................................................................................................... 16-4
2.3 Installation....................................................................................................................................... 16-4
3. SHOCK ABSORBER............................................................................................................................... 16-5
3.1 Inspection........................................................................................................................................ 16-5
3.2 Removal.......................................................................................................................................... 16-5
3.3 Installation....................................................................................................................................... 16-6
4. RADIUS ROD........................................................................................................................................... 16-6
4.1 Inspection........................................................................................................................................ 16-6
4.2 Removal.......................................................................................................................................... 16-7
4.3 Bushing Removal ........................................................................................................................... 16-7
4.4 Bushing Installation......................................................................................................................... 16-7
4.5 Installation....................................................................................................................................... 16-7
5. SWAY BAR 16-8
5.1 Removal.......................................................................................................................................... 16-8
5.2 Installation....................................................................................................................................... 16-8
6. SUSPENSION AIR SYSTEM .................................................................................................................. 16-9
6.1 Description...................................................................................................................................... 16-9
6.2 Inspection........................................................................................................................................ 16-9
6.3 Air Line Test.................................................................................................................................... 16-9
6.4 Air Tank Maintenance..................................................................................................................... 16-9
7. SUSPENSION HEIGHT ADJUSTMENT................................................................................................. 16-9
8. HEIGHT CONTROL VALVE.................................................................................................................. 16-10
8.1 Operation...................................................................................................................................... 16-10
8.1.1 Loading Position ................................................................................................................ 16-10
8.1.2 Neutral Position.................................................................................................................. 16-10
8.1.3 Unloading Position............................................................................................................. 16-10
8.2 Maintenance ................................................................................................................................. 16-10
8.2.1 Removal and Installation ................................................................................................... 16-11
8.2.2 Air Leakage Test................................................................................................................ 16-11
9. FRONT KNEELING AND HI-BUOY SYSTEM (IF APPLICABLE)........................................................ 16-12
9.1 Principles of Operation ................................................................................................................. 16-12
9.2 Maintenance ................................................................................................................................. 16-12
9.3 Keeling Sense Switch................................................................................................................... 16-13
9.4 Bellows Control and Exhaust Solenoid Valves............................................................................ 16-13
9.4.1 Removal and Installation ................................................................................................... 16-13
10. HI-BUOY SYSTEM ................................................................................................................................ 16-13
10.1 Principles of Operation ................................................................................................................. 16-13

PREVOST GKN AXLES LIMITED KIRKSTALL DIVISION Specifications

General

Brand	PREVOST
Model	GKN AXLES LIMITED KIRKSTALL DIVISION
Category	Automobile Parts
Language	English

Summary

Section 16: Suspension System

1. Description

Overview of the air suspension system, its components, and automatic operation.

2. Air Spring

Inspect air spring bellows for cracks, punctures, deterioration, or chafing. Check for air leaks.

3. Shock Absorber

Check shock absorber operation, mounting integrity, and look for leaks or damage.

4. Radius Rod

Inspect radius rods for distortion and cracks. Check bushings for wear or damage.

5. Sway Bar

Disconnect links, support sway bar, unbolt collars, and remove sway bar.

6. Suspension Air System

Inspect suspension air lines for chafing and air springs for damage. Replace damaged parts.

7. Suspension Height Adjustment

Explains how height control valves maintain vehicle height by adjusting air pressure.

8. Height Control Valve

Height control valves automatically add or release air to maintain constant suspension height.

9. Front Kneeling and Hi-Buoy System (If Applicable)

Explains how kneeling and hi-buoy systems work using solenoid valves and bypassing height control valve.

10. Hi-Buoy System

Explains how hi-buoy system raises vehicle body using air from kneeling air tank.

11. Low-Buoy System

Describes how low-buoy system lowers vehicle body to reduce overall height for low clearances.

12. "Level-Low" Leveling System (If Applicable)

Explains how the system adjusts suspension at three points to level the vehicle body.

13. Drive Axle Stabilizer Reservoir (XL-45 Converted Vehicle)

Information on the drive axle stabilizer reservoir and its maintenance.

14. Troubleshooting

Common malfunctions, possible causes, and corrections for suspension issues.

15. Parts Specifications

Specifications for various suspension system parts, including make and supplier.

16. Torque Specifications

List of torque values for critical suspension components during assembly.

Section 16: Supplement Information on Independent Front Suspension (IFS)

1. Introduction

Service procedures and specifications for Prévost XL converted coach with IFS.

2. Steering Linkage

Explains how steering wheel motion is transferred to the wheels via the steering linkage.

3. Independent Front Suspension Joints

Details on the ball joints and bearing systems within the IFS.

4. Front End Alignment

Procedures and specifications for maintaining proper front end alignment.