Haima 7 User manual

Brand: Haima

Model: 7

Type: User manual

Steering system

Common steps

Engine speed sensitive power steering

Check of power steering fluid ......................................................................................................................... N-1

Check of steering wheel and steering column ................................................................................................. N-2

Removal/installation of steering wheel and steering column .......................................................................... N-4

Disassembly Instructions of Steering Lock Bolt and Bracket ......................................................................... N-5

Removal/installation of steering and connecting rod ...................................................................................... N-6

Disassembly instructions of steering and joint ................................................................................................ N-7

Check of Steering and joint ........................................................................................................................... N-10

Removal/installation of power steering oil pump ......................................................................................... N-14

Disassembly/assembly power steering oil pump ........................................................................................... N-15

Decomposition description of power steering oil pump components ........................................................... N-16

Power steering

N-1

Common steps

Removal/installation of wheels and tires

● The description of this chapter doesn’t include

the installation steps of wheels and tires. After

the wheels removed, the tightening torque of

reinstallation will be: 88-127N.m

{9.0-13.0kgf.m, 65-94ft.lbf}

Removal/installation of power steering

components

● If the power steering fluid line used to have

been disconnected during the operation, M-III

or same type of ATF liquid (e.g. Dexron II )

shall be added after the operation completed.

Exhaust the air from the power line and check

for any leakages.

Disconnection/connection of joints

● Prior to carry out any operations requesting the

hand contact with a plug, the negative cable of

battery shall be disconnected. The cable can be

reconnected only after the work completed.

Engine speed sensitive power steering

Air exhaust

1. Check the oil level of power steering (Refer to

Check of Power Steering OIL; Check of Liquid

Level)

2. Jack up by use of a jack the front end of

vehicle and hold it with the safety bracket.

3. Turn back and forth several times the steering

wheel to the maximum with the engine flamed

out.

4. Recheck the oil level of power steering. If the

level decreases, add the power steering oil.

5. Repeat the steps 3 and 4 until the level

stabilized at the defined value.

6. Lay down the vehicle.

7. Start the engine and run it idle.

8. Turn back and forth several times the steering

wheel to the maximum.

9. Confirm that neither the power steering oil

foams, nor the level decreases.

10. When necessary, add the power steering oil and

repeat the steps 8 and 9.

Check of power steering fluid

Check of liquid level

1. Check the power steering fluid liquid level.

● If necessary, add the power steering fluid to the

specified level.

Type of power steering fluid

Power steering oil- ATF M-Ⅲ or Dexron

Check the leakage of power steering fluid

Caution:

● If keeping the steering wheel on the max.

steering position for more than 5s, the

temperature of power steering fluid may rise

very high and have adverse effect on the power

steering pump.

1. Start the engine and runs it idle.

2. Turn back and forth several times the steering

wheel to the maximum, enabling the power

steering fluid to reach everywhere.

Attention:

● Leakage may occur at the positions indicated

by the arrow in Fig.

2. Check whether there are any leakages.

Check of power steering fluid pressure

1. Fit up the special tool as shown in Fig.

2. Remove the HP tube from the oil pump and

connect the special tool.

Tightening torque:

30-44N·m {3.0-4.5kgf.m,22-32ft1·lbf}

Steering system

N-2

3. Exhaust the air from the system.

4. Fully open the pressure gauge valve.

5. Start the engine and back and forth several

times the steering wheel to the maximum

wheel, increasing the temperature of steering

liquid up to 50°-60°C{122-140°F}.

Caution:

● If the valve is closed more than 5s, the

temperature of power steering fluid will raise

very high and result in adverse effect on the

power steering pump.

6. Completely close the pressure gauge valve.

7. Increase the engine speed up to 1000-1500rpm

and measure the pressure of power steering

liquid.

● If the hydraulic pressure is not within the

specified range, repair or replace the

components of power steering pump.

Hydraulic pressure of power steering oil pump:

9.85-10.35Mpa

Caution

● If the steering wheel holds its maximum

steering position for more than 5s, the

temperature of power steering liquid will

increase very slow and have adverse effect on

the oil pump of power steering oil pump.

8. Fully open the pressure gauge valve and

increase the engine speed up to 1, 000-

1,500rpm;

9. Turn back and forth several times the steering

wheel to the maximum the steering wheel and

measure the hydraulic pressure produced in the

steering casing.

● If the pressure is not within the specified range,

repair or replace the steering components.

Pressure of steering liquid: 9.85-10.35Mpa

10. Remove the special tool

11. Install and screw in the HP tube and have the

tightening torque stay within the defined scope.

Tightening torque: 30-44N.m {3.0-4.5kgf.m ,

22-32ft1·lbf}

12. Exhaust the air from the system.

Check of steering wheel and steering

column

Check of steering wheel “run-out”

1. Stop the wheels in a position facing the front,

and slightly turn around the steering wheel to

confirm whether the amplitude of run-out is in

the specified range.

● if the amplitude of run-out is not within the

specified range, it is possible that the steering

knuckle is worn or the clearance of steering

gear excessive, the correction has to be made

as necessary.

Oscillation amplitude: 0-30mm {0-1.18in}

Check of steering wheel looseness

1. Swing the steering wheel in the direction as

shown in Fig..Check the swings of bearing

sleeve of steering column and steering shaft

hinge, the looseness of steering wheel and

steering column etc.,

Thermometer

Pressure gauge

Valve switch

Valve iron

Thermometer

Pressure gauge

Valve switch

Steering system

N-3

Check of steering wheel force

1. Check the following items

● Tire size and tire pressure.

● Steering liquid level.

● Drive belt tightness.

2. Stop the wheels on a solid and level roadway

and orient the wheels to the front.

3. Start the engine and increase the temperature of

power steering liquid up to 50°-

60°C {122-140°F}

Warning

● Remove the safety airbag module and install

properly after the check.

(Refer to the Safety Airbag System.

Removal/Installation of Airbag Module of

Driver-Sided Safety)

4. Remove the safety airbag module (Refer to the

Safety Airbag System).

5. Use a torque wrench to measure the steering

force F.

● If it is not within the specified range, pay

attention to the following items:

－ Whether there is air in the system?

－ Whether there are any leakages in the hose or

joints?

－ Whether the performances of power steering

oil pump and gear are in sound condition?

Steering force: 7.8N·m {80kgf }.cm , 69in.lbf

[maximum value]

Attention

● In order to judge whether the steering effect is

satisfactory, under the equivalent conditions

use the same method to check the steering of

another vehicle in same model and compare the

result of inspection.

● The steering will have different effect under the

following cases.

- Road conditions. Whether the roadway is wet

of dried, whether it is the asphalt pavement or

cement road.

- Tire conditions. E.g. the tire patterns, wears,

and tire pressure etc.,

Steering system

N-4

Removal/installation of steering wheel and steering column

Warning

● Improper handling of safety airbag module will induce sudden opening of safety airbag and result in

personnel injury, thus if it is necessary to process the safety airbag, please read first the “Warning of the

Safety Airbag”(Refer to the Safety Airbag System; Warning of Maintenance )

1. Remove as per the order shown in the following figure.

2. Assemble in the reversing order of disassembly.

Safety airbag: Refer to the Safety Airbag

System; Removal/Installation of Driver-Sided

Safety Airbag;

Lock nut

Steering wheel: Refer to the Disassembly

Instructions; Refer to the Installation

instructions

Steering column cover

Clock spring

Combination switch

Lower cover flap

Steering column: Refer to the Installation

instructions

Steering column gland

Steering column mounting seat

Dust cover

Steering coupling

Full-lock fixing bolts and brackets

Full -lock component

Steering system

N-5

Disassembly instructions of steering wheel

Caution

● When removing the steering wheel, do not

use the hammer to hit the steering shaft, for

this will result in steering column.

1. Park your vehicle while orienting the wheels to

the front.

2. Use a suitable puller to remove the steering

wheel.

Disassembly Instructions of Steering

Lock Bolt and Bracket

1. Use a hammer and chisel to cut a slot on the

lock bolt.

2. Use a straight screwdriver to remove the bolt.

3. Decompose the steering lock component.

Disassembly instructions of full-lock

component

Caution

● When replacing the full-lock component, the

anti-theft bolt has to be changed either.

1. Turn the ignition key in the “`ACC” position.

2. Pull out the full-lock component.

Installation instructions of steering lock bolt and

bracket the

1. Install the steering lock component on the

steering shaft.

2. Confirm that the locking operation is correct.

3. Fit up the steering lock bolt.

4. Tighten the bolt until the bolt head comes off.

Installation instructions of steering shaft

Caution

Do not use the shaft to knock the steering shaft.

1. Tighten the bolt A.

2. Tighten the bolt B from the right side.

3. Screw in the bolt D after the bolt C has been

tightened.

Installation instructions of steering wheel

1. Adjust the clock spring (Refer to the

Adjustment of Clock Spring of Safety Airbag

System)

2. Orient the wheels to the front and install the

steering wheel.

Check of steering column

Carry out the check as below. Replace the

components of steering shaft as necessary.

1. Whether the steering column bearing is

damaged.

2. Length of steering shaft: 834-836 mm

{32.8-32.9in}

2. Tilting operation

● Confirm that the adjusting rod is able to move

from the non-lock position steadily to the lock

position.

Steering system

N-6

● Confirm that the steering shaft is loosened

when the adjusting rod is locked.

Removal/installation of steering and

connecting rod

Caution

● Carry out the following operations, if the wheel

speed sensor in the ABS system is not going to

be removed first. When the wrong harness is

pulled, it will result in the break-circuit of

harness. Thus, prior to carry out the following

operation, remove the wheel speed sensor (at

the side of axle) and place it at a suitable place,

the wrong drawing of harness may be avoided.

1. Remove in the order as shown in the Table.

2. Install in the reversing order of removal.

3. After installation, check the toe-in of wheels

(Refer to the Positioning Parameters of Wheels,

Positioning Parameters of Front Wheels).

Bolt (intermediate shaft ): Refer to the Disassembly Instructions /

Refer to the Installation instructions

2 Cotter pin

3 Flange nut

Steering tie rod end ball:

Refer to the Disassembly Instructions;

Refer to the Disassembly Instructions

5 Hollow bolt

6 Oil return tube

7 Steering fixing bolt

8 oil pipe

Steering pinion and torsion rod:

Refer to the Disassembly Instructions

Locking

Adjusting rod

Unlocking

Steering system

N-7

Disassembly Instructions of steering tie rod

end ball

1. Remove the end rod nut.

2. Use a special tool to remove the steering

knuckle from the ended column.

Disassembly Instructions of bolt

(intermediate shaft)

● Make the alignment mark on the gear shaft and

steering casing body for correct installation.

Disassembly instructions of steering

and joint

● Pull out the steering and joint from the right

side.

Installation instructions of bolt

(intermediate shaft)

● After the mark aligned, install the intermediate

shaft and bolt.

Mark

Steering system

N-8

Decomposition of steering pinion and torsion rod

● Decompose as per the order shown in the Table.

1 Oil pipes 1 and 2

2 Inlet pipe

3 Outside tie rod assembly

4 Tie rod lock nut

5 Small clip

6 Dust cover

7 Clamp

8 Inside tie rod assembly

Lock nut(adjusting cap): Refer to

decomposition description

Adjusting cap

Spring

Briquetting plug

Lock bolt

Pinion shaft and valve chamber components

·Refer to the Decomposition Description

Pinion shaft components

·Refer to the Decomposition Description

Spring snap ring

Control valve

Seal ring

Pinion shaft

Valve body components

Oil seal:

Refer to the Decomposition Description

Upper bearing:

Refer to the Decomposition Description

Valve casing

“O” ring

Snap ring

Rack block

“O” ring

Rack bushing assembly

Piston

Oil seal

Gear rack

Rubber cushion block :

Refer to the Decomposition Description

Bracket

Steering casing

Steering tie rod ball dust cover

·Refer to the Decomposition Description

Steering system

N-9

Precautions to the decomposition of

steering tie rod

1. Take out the dust cover

2. Remove the steering tie rod

Precautions to the decomposition of lock

nut (adjusting cap)

● Use a special tool to remove the lock nut

Pinion shaft and valve chamber

components

1. Remove the connection gear shaft and the bolts

of valve chamber (2).

2. As shown in Fig., seize the gear shaft and pull

out the gear shaft and valve chamber

components.

Precautions to the decomposition of pinion

shaft components

● If difficult to pull out the pinion shaft, remove

it by use of compression way;

1. By use of the method as shown in Fig. push out

the pinion shaft from the valve chamber.

Decomposition description of snap spring

● Carefully remove the snap spring, avoiding

damage on the pinion shaft components.

Decomposition description of upper

bearing and oil seal

1. Fit up the special tool as shown in Fig.

2. Use the special tool to extrude the oil seal and

Upper bearing. Do not press the edge of valve

chamber.

Snap ring

Guide shaft collar

Steering system

N-10

Decomposition description of inner guide

sleeve and oil seal

1. Install the special tool onto the valve side;

2. Install the special tool in the gear chamber.

3. Extrude the oil seal and inner guide sleeve.

Disassembly Instructions of rubber

cushion block

● Use a special tool and a presser to extrude the

rubber pad from the steering casing body.

Decomposition description of steering tie

rod ball dust cover

1. Place the end of tie rod on a jig and clamp it.

2. Clamp the end of tie rod as per the angle shown

in Fig. and use a chisel to align with the dust

cover.

3. Hit with a hammer, the chisel to remove the

dust cover.

Check of Steering and joint

Check of gear rack

1. Check the gear rack for any fracture, damage

and broken teeth.

● If yes, replace the gear rack.

2. Measure the radial run-out of gear rack. If it is

not within the specified range, replace the gear

rack.

Range of radial run-out

Near the point A: 0.15mm{0.006in}

Near the point B: 0.20mm{0.008in}

Check of steering tie rod ball

1. Check whether the end ball of tie rod is

damaged and the dust cover broken. Replace

when necessary.

2. Check whether the end ball is loosened.

Replace the tie rod end ball when necessary.

3. Turn the end ball 5 times.

4. Use a special tool and spring balance to

measure the rotation torque of end ball.

● If it is not within the specified range, replace

the tie rod end ball.

Steering system

N-11

Rotation torque:

0.4-2.7N·m {3.5-26.0kgf.Cm, 3.1-22.5in.lbf}

Reading on the spring balance

3.4-25.5N {0.35-2.60kgf, 0.8-5.71bf}

Check of steering tie rod

1. Check whether the tie rod is bent or damaged.

Replace it when necessary.

2. Check whether the ball nodes are loosened and

replace them when necessary.

3. Swing around the tie rod for 5 times.

4. Use a spring balance to measure the swing

torque.

● If the torque is not within the specified range,

replace the tie rod.

Swing torque:

0.1-4.0N·m(1-39kgf.cm, 0.9-30.8in.lbf}

Reading of spring balance:

0.6-24.5N{0.06-2.50kgf, 0.13-5.501bf}

Steering system

N-12

Installation of steering and joint

1. Install in the order shown in the Table.

Dust cover of steering tie rod ball

·Refer to the Installation Instructions

Rubber cushion block:

Refer to the Installation Instructions

3 Steering casing

4 Bracket

5 Gear rack

6 Oil seal: Refer to the Installation Instructions

7 Piston

8 Rack bushings assembly

9 “O” ring

10 Rack block

11 Snap ring

12 “O” ring

13 Valve casing

14 Oil seal

Upper bearing: Refer to the Installation

instructions

16 Pinion shaft

Seal ring: Refer to the Installation

instructions

18 Control valve

19 Spring snap ring

20 Lock bolt

21 Briquetting plug

22 Spring

adjusting cap:

Refer to the Installation Instructions

Lock nut(adjusting cap): Refer to the

Installation Instructions

25 Inside tie rod assembly

26 Dust cover

27 Clamp

28 Small clip

29 Tie rod lock nut

30 Outside tie rod assembly

31 Intake oil pipe

32 Oil pipes 1 and 2

Steering system

N-13

Installation instructions of steering tie rod

ball dust cover

1. Wipe out greasy dirt on the ball joint;

2. Add a few grease in the new dust cover.

3. Use a special tool and a presser to fit up the

dust cover onto the tie rod end ball.

4. Wipe out all exposed grease.

Installation instructions of rubber cushion

block

1. Smear soapsuds on the rubber part of rubber

pad.

2. Use a special tool and a presser to press the

rubber spacer block until then end of rubber

comes out of the casing.

3. Turn over the casing, press the rubber spacer

block until it comes out of another end.

4. The rubber spacer block shall be aligned with

the steel tube.

Installation instructions of upper bearing

1. Smear suitable amount of grease on the new

upper bearing.

2. Use a special tool to press in the bearing.

Installation instructions of seal ring

1. Use a special tool to fit up a new seal ring on

the valve body of gear shaft.

2. After installation, use a special tool to put the

seal ring in place.

3. Fit up the snap ring

Installation instructions of adjusting cap

1. Place the gear rack in the middle place.

2. Tighten the adjusting cap, enabling its

tightening torque to reach to 19.6N.m

{2.0kgf.m,14.5ft.1bf} for three times, and then

use a special tool to turn the end cap for 23°.

3. Smear a layer of sealant on the threads of lock

nut.

4. Connect the lock nut

5. Use a special tool and a spring balance to

measure the torque of adjusting rod.

● If non-conform to the standard, repeat the steps

2-5.

Steering system

N-14

Standard

Position of gear rack when it is in the center (in

the middle of steering wheel)

1.0-1.4N.m {10-14kgf.cm, 8.7-12.1 in.lbf}

[Reading of spring balance]

9.9-13.7N {1.0-1.4kgf, 2.2-3.Olbf}

6. Use a special tool to fit up the lock nut

Tightening torque:

40-49N·m {4.0-5.0kgf.m, 29-36ft.lbf}

Check of air tightness

1. Connect the special tool with gear chamber of

booster cylinder

2. Use the vacuum pump to apply the vacuum of

53.3kpa{400mmHg,15.7inHg) in the cylinder

and maintain the vacuum at least for 30s.

● If unable to maintain this vacuum degree,

replace the oil seal.

Removal/installation of power

steering oil pump

1. Remove in the order as shown in the Table.

2. Install in the reversing order of removal.

3. Adjust the drive belt (Refer to the Adjustment

of Drive Belt and Drive Belt).

1 Engine harness joint

2 Punch bolt

3 Seal spacer

4 HP oil pipe

5 Oil suction hose

6 Adjusting nut and bolt

7 Adjusting bolt

8 Drive belt

9 Tightening bolt

10 Tightening bolt

11 Steering oil pump assembly

Steering system

N-15

Disassembly/assembly power steering oil pump

Attention

The following operations can be carried out only when the “O” ring and oil seal are to be replaced. If

necessary to check other items, the component of pump body shall be replaced.

1. Disassemble in the order as shown in the Table.

2. The assembly is in the reversing order of disassembly.

Components of power steering oil pump:

Refer to the Decomposition Description

2 Bolt

3 Oil suction pipe

4 “O" ring

5 Components of pressure switch

Rear pump body:

Refer to the Assembly Description

7 “O” ring

8 Side disc

Internal camshaft:

Refer to the Assembly Description

Snap ring

Rotor

Blade:

Refer to the Assembly Description

Front pump body

Shaft group body

Oil seal: Refer to Assembly Description

Steering system

N-16

Decomposition description of power

steering oil pump components

Caution

● When clamping with a vice, a special tool shall

be used to prevent damage on the oil pump.

Installation instructions of oil seal

Caution: The pump body shall be properly

positioned.

1. Use a special tool and a hammer to fit up the

oil seal.

Installation instructions of blades

1. Place the blades in the rotor, the round edge of

blade shall get in touch with the inner edge of

internal cam rim.

Installation instructions of internal cam

ring

1. Face the mark upward and contain the internal

cam ring into the front pump body.

Installation instructions of rear pump body

1. After the rear pump body installed, turn

manually the shaft to see whether it rotate

smoothly.

Haima 7 User manual

Haima 7 User manual

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