SAFARI

POWER STEERING

F) Fitting the housing cover

1 Fit the two round seal rings (42 and 43) in the

axial groove of the housing cover (40).

1.1 Fit the housing cover (Fig-11).Position the housing

cover by turning the adjusting screw (31) on the

front surface of the housing in a counter – clockwise

direction and screw on the sealing nut (50)

temporarily.

Screw in and tighten the hexagon bolts (46) with

washers (47).

Screw in the threaded plug (48) and tighten (refer

to the technical data for the tightening torque).

G) Setting the pressure Point

1. Place the torque measuring unit Tool No.4 and

insert Tool no.5 on the worm.

2. Turn the steering from the one end position to the

other. Measure the frictional force outside the

pressure point and determine the total turn of the

steering wheel.

3. Then set the frictional force in the area of the

pressure point (mid position; half of the total turn

of the steering wheel). The torque measuring

device is turned both to the left land right of the

center position and the adjusting screw should be

screwed out so far until an increase in the friction

torque of 40-60 Ncm compared to the value

measured in point 2 is set (Figure12) .

4. Tighten the sealing nut (50) (refer to the technical

data of the tightening torque), while holding the

adjusting screw in a fixed position. Check the set

torque once again. Fit the protective cap (70).

Checking the frictional torque of the completely

assembled steering unit

Place the torquemeasuring deviceTool no.4 and insert

Tool no. 5 on the worm.Turn the steering unit form one

end position to the other.Measure that frictional torque

outside the pressure point in a horizontal position (refer

to the technical data.)

Functional test:

Clamp the completely assembled steering unit on the

steering test rig according to the instructions given in

section VII. Bleed the steering unit (see section II)

and increase the oil temperature to approximately

Fig. 12

The adjustment values given in section VII are valid

for setting pressure point of the steering system after

completion of the repairs on the workbench. There is

no oil in the steering unit.

1. Testing the maximum pressure:

Block the steering unit in the mid position. Turn the

steering wheel until the maximum pressure has built

up on one side of the cylinder. For this purpose it is

necessary to apply a force of 100-200N (10-20 kg) to

the periphery of the steering wheel so that the

maximum path of the valve is utilized.

If the steering unit has no pressure limiting valve then

the pressure limiting valve built into the testing rig

must be set to the rated pressure which is

predetermined for the steering unit (this would

correspond to the rated pressure which is given on

the type plate of the pump).

The same measurements are now carried out in the

opposite direction of the steeringwheel. If themaximum

pressure is not reached within the specified tolerance,

the oil leakage in the steering system is too high.