C 240 4MATIC Wagon (203.281) V6-2.6L (112.916) (2003)
6
Drain hydraulic system
CAUTION: General notes for working on vehicles with level control / ADS
7
Connect tester to suspension-control module (3)
8
Fill the reservoir with fluid (2)
CAUTION: Raise the fluid level to approximately 0.5 litres above the MAX graduation (a) on the dipstick (2a) for the test
DANGER:
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Risk of accident from vehicle starting off by itself when engine running Risk of injury from contusions and burns if you insert your
hands into the engine when it is started or when it is running
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Secure vehicle to prevent it from moving off by itself
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Wear closed and close-fitting work clothes
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Do not touch hot or rotating parts
9
Start engine and allow to idle
10
Press suspension-control module lever (3a) to "fill" (F) position
11
Check hydraulic pump supply rate
CAUTION: Because the pressures are considerable, keep the test as brief as possible
NOTE:
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The suspension-control module's bypass valve limits the supply pressure of the hydraulic pump The bypass valve emits a whistling noise as it
opens.
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Bypass valve release pressure if the bypass valve's opening pressure is substantially lower than specification, and supply rate at idle
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Replace hydraulic/tandem pump if the bypass valve's opening pressure is substantially higher than specification
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check rear suspension-control module
12
Set level controller lever to center position
DANGER:
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Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure Risk of poisoning from swallowing hydraulic fluid
-
Render the hydraulic system pressureless before commencing work on system Wear protective clothing and eye protection
13
Disconnect tester at level controller
14
Recharge hydraulic system