7 Steering system ................................................ 1624 

7.1 Warning and precaution   ............................ 1624 

7.1.1 Warning and precaution. .............................. 1624   

7.2 Hydraulic boosting steering system. ........... .1625 

7.2.1 Specifications ............................................... 1625 

7.2.1.1 Fastener specifications .............................. 1625 

7.2.1.2 General specifications. .............................. 1625   

7.2.2 Description and operation. ........................... 1626   

7.2.2.1 Description and operation. ........................ 1626 

7.2.3 System operating principle  ........................ 1628 

7.2.3.1 Hydraulic power gear rack and pinion steering 
operating principle. ............................................... 1628 

7.2.3.2 Power steering pump assembly work principle
 .............................................................................. 1632 

7.2.4 Component position .................................... .1633 

7.2.4.1 Component position .................................. 1633   

7.2.5 Disassemble drawings   ............................... 1634 

7.2.5.1 Part disassembly drawing ......................... 1634 

7.2.5.2 Steering gear disassembly drawing. .......... 1635   

7.2.5.3 Power steering pump assembly disassembly 
drawing ................................................................ .1636   

7.2.6 Electrical schematic diagram ....................... 1637 

7.2.6.1 Electrical schematic diagram .................... 1637 

7.2.7 Diagnostic information and procedures. ...... 1638 

7.2.7.1 Diagnosis descriptions .............................. 1638 

7.2.7.2 Visual inspection ...................................... 1638 

7.2.7.3 Fault symptom table ................................. 1639 

7.2.8 Dismantle and installation   ......................... 1642   

7.2.8.1 Drive belt inspection. ................................ 1642 

7.2.8.2 Power steering oil fluid lever inspection   1642 

7.2.8.3 Steering hydraulic pressure inspection   ... 1643 

7.2.8.4 Steering force inspection .......................... 1645 

7.2.8.5 Steering gear tie rod ball head inspection . 1646   

7.2.8.6 Power steering oil inlet/outlet pipe 
replacement .......................................................... 1647 

7.2.8.7 Power steering system exhaust process. ... 1653 

7.2.8.8 Power steering oil inspection ....................  1653 

7.2.8.9 Power steering pipeline with oil can assembly 
replacement .......................................................... 1654   

7.2.8.10 Power steering pump assembly replacement
 ..............................................................................  1656 

7.2.8.11 Replace steering tie rod and ball head   .. 1659 

7.2.8.12 Power steering gear anti-duct sleeve 
replacement   ........................................................ 1661 

7.2.8.13 Power steering gear with tie rod assembly 
replacement .......................................................... 1663 

7.3 Steering wheel and steering column   ......... 1668 

7.3.1 Specifications   ............................................ 1668 

7.3.1.1 Fastener specifications ............................. 1668 

7.3.2 Description and operation ........................... 1668 

7.3.2.1 Operations and Description   .................... 1668 

7.3.3 Component position .................................... 1669 

7.3.3.1 Component position ................................. 1669 

7.3.4 Disassemble drawings ................................. 1670   

7.3.4.1 Disassemble drawings ............................. .1670 

7.3.5 Diagnostic information and procedures. ...... 1671   

7.3.5.1 Diagnosis descriptions ............................. .1671   

7.3.5.2 Visual inspection ...................................... 1671 

7.3.5.3 Fault symptom table ................................. 1671   

7.3.6 Dismantle and installation ........................... 1673   

7.3.6.1 Steering wheel free clearance inspection. . 1673   

7.3.6.2 Upper/lower intermediate shaft universal joint 
inspection ............................................................. 1673 

7.3.6.3 Steering wheel replacement ..................... .1674   

 
 

7 Steering system 

7.1 Warning and precaution 

7.1.1 Warning and precaution 

Important precaution on anti-corrosion Materials 

Warning! 

If the power steering system has been repaired, the correct steering fluid level can not be obtained unless the air in 
the steering system is not discharged. The air in the fluid may cause pump cavitation noise and may cause power 
steering pump damage over a period of time. 

Important precaution on power steering hose disconnection 

Warning! 

Do not start up the vehicle whenever the power steering gear inlet or outlet hose is disconnected. All hose 
interfaces must be blocked or covered when disconnecting the hose. Otherwise, pollute or loss the power steering 
fluid and damage the system. 

Important precaution on steering wheel in the steering limiting position   

Warning! 

The duration of the steering wheel in the steering limiting position does not exceed 5s; otherwise, the steering 
pump may be damaged. 

Precautions of correctly using power steering fluid 

Warning! 

When adding or completely replacing the oil, be sure to use the correct power steering fluid. the hose and sealing 
member may be damaged or oil leaks due to the use of incorrect oil. 

 

1624

 
 

7.2 Hydraulic boosting steering system 

7.2.1 Specifications 

7.2.1.1 Fastener specifications 

Torque: 

Fastener Name 

Model 

Metric (N·m) 

English system 

(lb-ft) 

Power steering gear fixing device 

M14×1.5 

125 

92.5 

Fixing bolt of universal fork 

M8 

24 

17.8 

Fixing device of oil can support and body 

M6 

9 

6.7 

The power steering pump and the engine are 

connected with the bolt. 

M10×1.25 50 

37 

The power steering pump and the engine are 

connected with the nut. 

M10 50  37 

A-shaped hose hoop is fixed by the steering gear dust 

cover and the steering gear. 

D=70mm - 

- 

Lengthened shaft and gear shaft fixing device 

M8 

24 

17.8 

Pipe column bracket and fixing bolt of beam 

M8 

25 

18.5 

The steering column spline dust cover and the front 

frame panel are fixed 

Fixed nut 

M6 9 6.7 

Oil return pipe clamp and steering gear fixing nut 

M6 

9 

6.7 

Mechanical steering column assembly coupling nut 

M8 

25 

18.5 

Cotter Pin 

d=2.5;l=30 

33 

24.4 

Oil pump and oil can are connected with the elastic 

hoop of the oil tube steel belt. 

D=24 -  - 

Fixture of power steering inlet-outlet oil pipe 

assembly 

M6 9 6.7 

Fixing flat washer of steering gear 

M14 

- 

- 

Fixing bolt of steering gear 

M14 

125 

92.5 

7.2.1.2 General specifications 

Specification 

Applications 

(Metric) English 

system 

System pressure difference (direction 

adjustment) 

490kPa or less 

71 psi or less 

Idling system pressure (steering maximum) 

More than or equal to 8,000kPa 

More than or equal to 900psi

Approximate fuel capacity (complete set 

power steering system) 

0.91 L 

4.58 pt 

 

Applications Type Specification 

Fluid 

Power steering fluid 

DEXRONⅢ 

1625

 
 

7.2.2 Description and operation 

7.2.2.1 Description and operation 

Warning! 

See Important precaution on the steering wheel in steering limiting position in warning precaution. 

Warning! 

Before disconnecting the mechanical steering column assembly and the power steering gear assembly with the tie 
rod, the wheel should be maintained in the forward direction, and the mechanical steering column assembly must 
be in the LOCK (lock) position. 

After disconnecting the above part, do not move the front wheel tire and the wheel; otherwise, it will cause that 
certain parts are wrongly positioned in the process of installation and the airbag spiral coil in the mechanical 
steering column assembly deviates from the center to damage the airbag spiral coil. 

Description of power steering pump assembly 

The power steering pump assembly is a component served as a vane-type pump that provides the working 
hydraulic pressure to the whole power steering system. 

The power steering pump assembly consists of the following components: 

– Pump 

housing 

– Vane 

pump 

rotor 

– 

Blade of vane pump 

– 

Front side plate of vane pump 

– Vane 

pump 

shaft 

– 

Vane pump shaft bearing 

–   Oil pressure switch assembly 

– 

Flow control valve assembly 

– Suction 

pipe 

Oil seal and O-ring 

The following parts are installed in the pump housing side hole: 

– Suction 

pipe 

–   Oil pressure switch assembly 

– 

Flow control valve assembly 

The flow control valve assembly consists of the following parts: 

– Oil 

outlet 

connector 

– Flow 

control 

valve 

– 

Flow control valve pressure spring 

The flow control valve hole and the oil outlet interface are integrated. The flow control valve plays the main role 
in preventing the excessive pressure of the steering pump. 

Description of power steering gear assembly with tie rod 

The power steering gear assembly with tie rod adopts hydraulic power rack and pinion steering gear. When 
turning the steering wheel, the motion of the steering wheel is transferred to the steering control valve shaft, and 
the gear rack on the steering control valve shaft is engaged, so that the rack moves left and right. 

1626