32 41 090 Removing and installing (replacing) vane pump for dynamic drive (N74): Notes
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NOTE:
When replacing vane pump:
OIL RESERVOIR must be replaced in event of metal abrasion, sluggish pump shaft or increased dirt contamination!
The filter integrated in the oil reservoir can only absorb a limited amount of foreign particles. If the filter clogs, the hydraulic system can no longer be sufficiently protected.
Metal abrasion is perceived in the oil reservoir as metallically glittering hydraulic fluid.
Replacement of the oil reservoir due to a leak (e.g. at the hose connections) is only required with unavoidable high penetrations of dirt.
OIL RESERVOIR must be replaced in event of metal abrasion, sluggish pump shaft or increased dirt contamination!
The filter integrated in the oil reservoir can only absorb a limited amount of foreign particles. If the filter clogs, the hydraulic system can no longer be sufficiently protected.
Metal abrasion is perceived in the oil reservoir as metallically glittering hydraulic fluid.
Replacement of the oil reservoir due to a leak (e.g. at the hose connections) is only required with unavoidable high penetrations of dirt.
WARNING:
DANGER OF POISONING
if oil is ingested/absorbed through the skin!
DANGER OF INJURY if oil comes into contact with eyes and skin!
DANGER OF INJURY if oil comes into contact with eyes and skin!
IMPORTANT:
Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Do not draw off hydraulic fluid (risk of contamination).
Do not draw off hydraulic fluid (risk of contamination).
Necessary preliminary tasks:
- Release the ACTIVE ANTI-ROLL BAR from front axle support
- Release pressure lines at the anti-roll bar and tie to one side. See PRESSURE LINE FOR VA1 SWIVEL MOTOR and PRESSURE LINE ON VA2 SWIVEL MOTOR .
- Mark position of electromechanical power steering box relative to front axle support, then remove. See ELECTRIC STEERING BOX (EPS) or ELECTRICAL STEERING BOX (ACTIVE STEERING) .
- Remove BELT PULLEY
- Release the ARS RETURN LINE PART 2 at the front right line flange and place to one side
Release screw (4).
Tightening torque 32 41 14AZ .
Unlock plug connection (1) and disconnect.
Undo screws (3) and pull expandable hose off vane pump.
Tightening torque 32 41 13AZ .
Release hose clamp (2) and detach intake pipe from vane pump.
Installation note:
Replace hose clamp (2).
Align the intake pipe to the marking on the vane pump.
Make sure hydraulic lines are laid without tension and with sufficient distance to adjoining components.
Undo screws (1, 2) and remove the vane pump.
Tightening torque 32 41 9AZ .
Installation note:
Replace screws.
Make sure screws are installed in correct positions.
- Bolt (1) M10x90
- Screw (2) M10x130