7.2.5.2 Steering Disassemble View

13

4

5

14

15

1

6

7

8

9

10

11

12

2

3

FE07-1010b

Legend

1. Left Tie Rod Assembly
2. Locking Nut
3. Lateral Hoop
4. Left Protective Cover
5. Inside Hoop
6. Left Intermediate Bar
7. Right Intermediate Bar
8. Inside Hoop
9. Right Protective Cover

10. Lateral Hoop
11. Locking Nut
12. Right Tie Rod Assembly
13. Right Turn Pipe
14. Left Turn Pipe
15. Steering Case

Steering System

Hydraulic Power Steering System

7-11

7.2.5.3  Power  Steering  Pump  Assembly
Disassemble View

13

12

11

10

16

2

1

3

5

4

8

9

6

7

15

17

14

20

19

18

FE07-1011b

Legend

1. Pulley Locking Nut
2. Washer
3. Pulley
4. Bearing Clamp
5. Oil Seal
6. Pump Front Shell
7. Large O-ring
8. Small O-ring
9. Impeller Shaft with Bearings
10. Impeller Pump Front Side Panel
11. Impeller Pump Rotor and Vane

12. Gasket
13. Impeller Pump Rear Shell
14. Fluid Pipe
15. Bracket
16. Hydraulic Switch Valve and Compression Spring
17. Fluid Pressure Switch Connector
18. Fluid Outlet Joint
19. Flow Control Valve
20. Flow Control Valve Compression Spring

7-12

Hydraulic Power Steering System

Steering System

7.2.6 Schematic
7.2.6.1 Schematic

ECM

PAS Switch

FE07-1012b

Steering System

Hydraulic Power Steering System

7-13

7.2.7 Diagnostic Information and Procedures
7.2.7.1 Diagnosis Description

Refer to 

7.2.2.1

 

Description and Operation

get familiar with the system functions and operation before start system diagnostics, so

that it will help to determine the the correct diagnostic steps, more importantly, it will also help to determine whether the customer
described situation is normal.

7.2.7.2 Visual Inspection

Prior to maintenance, confirm the fault, carry out road test. Consider and visual inspect the following systems:

–

Tire and Wheel

a. Check whether the tire pressure is appropriate, whether the wear is even.

b. Whether the tires lose roundness.

c. Whether the tires are unbalanced.

d. Whether the wheel bearings loose or noisy.

–

Suspension System

a. Front suspension, rear suspension, whether the connecting rod is loose or damaged.

–

Steering System

a. Whether the mechanical steering column and steering gear assembly connection is loose or worn.

b. Whether the power steering pump assembly, steering gear and the pipe are leaking.

c. Whether the power steering fluid surface is correct. Refer to 

7.2.8.2

 

Power Steering Fluid Level Inspection

.

7.2.7.3 Fault Symptom Table

During diagnostic process. Refer to the following table. It can help to determine the cause and location of faults. Numbers are in
descending  order  to  indicate  the  possible  causes  of  faults,  check  each  component.  If  necessary,  repair  or  Replace  these
components.

Symptoms

Suspected Parts

Measures / Refer to

Steering Effort

Hard

1. Tires (Tire pressure inadequate or tread damage)

Add air or replace the tires. Refer to

4.4

 

Wheels and

Tires

.

2. Power Steering Fluid Level (Low)

Add steering fluid. Refer to 

7.2.8.2

 

Power Steering

Fluid Level Inspection

.

3. Drive Belt (Loose)

Adjust or Replace the drive belt. Refer to 

7.2.8.1

 

Drive

Belt Inspection

.

4. Front Wheel Positioning (Incorrect)

Adjust the front wheel positioning. Refer to

4.4.3.1

 

Wheel Alignment

.

5. Power Steering Tie Rod Ball Joint (wear)

Replace the Power Steering Tie Rod Ball Joint. Refer
to 

7.2.8.11

 

Steering Bar and Ball Joint Replacement

.

6. Lower Control Arm Ball Joint (Wear)

Replace the lower control arm Ball joint. Refer to

4.2.7.7

 

Lower Control Arm Ball Joint Replacement

.

7. Front Shock Absorber Upper Bearing Assembly
(Wear)

Replace the Front shock absorber Upper bearing
assembly. Refer to 

4.2.7.4

 

Front Shock Absorber

Components and Spring Replacement

.

7-14

Hydraulic Power Steering System

Steering System