[4matic] odpowietrzanie układu.pdf

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28-140Bleeding hydraulic system

The multi-disk clutches in the transfer case and

in the rear axle only engage reliably when there

is no air in the hydraulic system.

Special tools

1 Hydraulic system

(Vehicles with service valve)

Check hydraulic oil level in oil reservoir.

Service valve in test position (A).

To bleed, start engine and allow to run for

approximately

30 seconds at 1000 to 2000 rpm.

After bleeding, move service valve again into

operating position (B).

A

Test position

B

Operating position

© Daimler AG, 06.01.13, G/03/09 / ra28004ma0140x / 0140 - Bleeding the hydraulic system Model 124 4MATIC

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2 Rear axle differential lock (HS)

Remove 4MATIC control unit (N30/3) from the

mount and disconnect the 25-pin coupling.

Connect the 25-pin cable harness with the test

cable (02) to the socket box (04). The 4MATIC

control unit (N30/3) remains disconnected

(unplugged).

02

25-pin test cable 124 589 33 63 00

04

Socket box 124 589 00 21 00

3 Actuate the rear axle differential lock valve

(A7/2y3) by bridging from socket 8 to socket 2

(ground) on the socket box.

Start engine and allow to idle. Service valve in

operating position.

01

25-pin cable harness

02

25-pin test cable 124 589 33 63 00

04

Socket box 124 589 00 21 00

© Daimler AG, 06.01.13, G/03/09 / ra28004ma0140x / 0140 - Bleeding the hydraulic system Model 124 4MATIC

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4 Open breather (67) on rear axle center piece

assembly until the hydraulic oil escapes

without any bubbles.

5 Bleeding multi-disk clutches of front axle

drive train (AV) and center differential lock

(ZS )

Unscrew the hydraulic lines of the front axle

drive train (AV) and center differential lock (ZS)

on transfer case and hold in container.

Start engine and allow to idle until the hydraulic

oil escapes without any bubbles (approx. 20

seconds).

As of transfer case no. 26 617

Open vent valves (EAV, EZS).

Start engine and allow to idle until hydraulic oil

escapes without any bubbles (approx. 20

seconds).

6 Then correct hydraulic oil level in oil

reservoir.

© Daimler AG, 06.01.13, G/03/09 / ra28004ma0140x / 0140 - Bleeding the hydraulic system Model 124 4MATIC

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Plik z chomika:

Inne pliki z tego folderu:

[4matic] testowanie sprawności skrzyni rozdzielczej.pdf (326 KB)
[4matic] demontaż i montaż skrzyni rozdzielczej.pdf (902 KB)
[4matic] odpowietrzanie układu.pdf (125 KB)
[4matic] Demontaż półosi przedniej.pdf (130 KB)
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