Vehicle pulls to the right
Topic number

LI46.25-P-059240

Version

1

Design group

46.25 Hydraulic/electrohydraulic steering

Date

06-23-2014

Validity

463.### -1X as of XZ2 (YoM12)

Reason for change

Distribution adjusted

Reason for block

Complaint:

Vehicle runs off to the right on flat roads when driving straight ahead.

Cause:

Various causes are possible. Please perform a cause analysis as described in the remedy.

Remedy:

Proceed step by step if the problem continues to occur:
1.
Restore vehicle to series production configuration
e.g. Remove any wheel spacers, check tire pressures, check tire sizes and running direction etc.
2.

Check wheel alignment and adjust if necessary
For this, always use universal adapters for the measuring heads; the Mercedes-Benz measuring head holders
are not suitable for the G-Class.
Rim runout compensation must be performed in all cases.

3.

Check steering gear
Detach drag link from steering gear.
Then measure the force required to move the pitman arm to the left and right (with the engine running!).
A commercially available spring balance, spring force meter, luggage scale or similar must be used for this; the
scale should extend from 0 to 400 N (0 to 40 kg).
The force must be measured at right angles to the pitman arm and at the same height.
Difference between left and right:
The greater force must be no more than 50% higher than the lower force.
Example:
Force for moving the pitman arm to the left: 300 N (30 kg)
Force for moving the pitman arm to the right: 200 N (20 kg)

06-23-2014 3:43 PM
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The steering gear must be replaced.
Replace steering gear if this is necessary according to the test (step 3):
1.
Replace steering gear including pitman arm (included in package).
The identification plate of the steering gear must bear a production date of at least 02/2014.
Always note: The marking on the steering shaft of the steering gear is not valid. The steering gear and steering
wheel must be in the straightahead position when installing.
- Install steering gear on frame and connect hydraulic connections
- Connect drag link to pitman arm
- Straighten right front wheel
- Straighten steering wheel
- Connect steering shaft to steering gear (the steering wheel and right front wheel must be straight!)
2.

Bleed steering gear (after filling with power steering fluid):
Start engine and switch off again.
Raise vehicle at the front (load off front wheels) and turn steering wheel to full left and right lock at least 5 times
with engine off.
Then lower vehicle (load on front wheels) and turn steering wheel to full left and right lock at least 10 times with
engine running until the system is free of air.
Check oil level and correct if necessary.

3.

Check toe at front axle and adjust if necessary.

4.

Adjust mechanical steering stops.

5.

Adjust hydraulic steering limiter.
The distance between the stop screw and the axle stop as the hydraulic limiter starts to operate must match the
values below (in contrast to the documentation in WIS):
Left: max. 2-8 mm
Right: max. 2-5 mm

6.

Test of power assistance when reversing at full steering angle (to both sides).
If the power assistance for centering the steering commences too late, the hydraulic steering angle must be adjusted.

Attachments
File

Description

Kraftmessung.jpg

Example of a commercially available scale for measuring
steering force at steering gear.

Typschild.JPG

Steering gear OK as of:
- Production date 02/2014

06-23-2014 3:43 PM
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- Serial number 01545

Symptoms
Chassis/suspension / Suspension characteristic / Pulls to the right
Chassis/suspension / Suspension characteristic / Unsatisfying straight ahead running

Parts
Part number

ES1 ES2 Designation

A 463 460 07 01

Quantity Note

Steering gear

1

EPC Other
make
part

Production date as per identification plate as of 02/2014

X

Work units
Op. no.

Operation text

Time

Damage
code

Note

40214 B5

Vehicle OK only due to wheel alignment check (step 2)

46401 17

Vehicle OK only after steering gear
replacement (step 3)

WIS-References
Document number

Title

Note

Allocation

AR40.20-P-0200AC

Perform wheel alignment
check

Remedy

AR46.20-P-0500GY

Remove/install steering gear

Remedy

AR40.20-P-0345AC

Measure/adjust wheel angle Adjustment of mechanical
steering stop

Remedy

AR46.25-P-3090F

Check/adjust hydraulic limi- Important! Adjustment vater
lues:
Left: max. 2-8 mm
Right: max. 2-5 mm

Remedy

Validity
Vehicle

Engine

Transmission

463.202

*

*

463.236

*

*

463.237

*

*

463.242

*

*

463.272

*

*

463.273

*

*

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© Copyright Daimler AG

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463.274

*

*

463.346

*

*

06-23-2014 3:43 PM
© Copyright Daimler AG

GKRZYZA

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