ar3550b0016ta

Remove/install lift bellows of trailing axle

Type ar · emne 35.50 · version 0103 · 2017-07-06

Gælder for: Rear axle 749.111/119/164 in model 934.241/251, 958.4 Rear axle 749.118 in model 958.1 Rear axle 749.916 in model 958.0 Rear axle 749.919 in model 958.2/4 Rear axle 749.921 in model 958.4

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Placering

Funktionsgruppe 2 Chassis › 35 Bagaksel › 35.50 Ekstra aksler (forløbs-/efterløbs-/midter-/anhængeraksel) — Serie 934 (modeller 241, 251) · Serie 958 (modeller 0**, 1**, 2**, 4**)

EinPAS 17 Drivstreng/aksel › 17.52 Ekstra aksel › 17.52.52 Aksellift — Serie 934 (modeller 241, 251) · Serie 958 (modeller 0**, 1**, 2**, 4**)

Gælder også for motorer/gearkasser: 749 111, 749 118, 749 119, 749 164, 749 916, 749 919, 749 921

AR35.50-B-0016TA

Remove/install lift bellows of trailing axle

21.06.2017

Rear axle

749.111/119/164 in model 934.241/251, 958.4

Rear axle

749.118 in model 958.1

Rear axle

749.916 in model 958.0

Rear axle

749.919 in model 958.2/4

Rear axle

749.921 in model 958.4

Remove/install lift bellows of trailing axle

B35.50-0004-09

1

Arc

8

Nuts

15

Holder

2

Axle tubular housing

9

Nut

16

Elevation bellows

3

Bolt

10

Nut

17

Compressed air piping

4

Nut

11

Platter

A

Thread protrusion

5

Nut

12

Holder

B

Stroke

6

Bellows consoles

13

Nut

C

Clearance

7

Bolts

14

Bellows bracket

Remove

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

1

Park the vehicle on a level surface over a ditch

Perform the work only with the vehicle unloaded.

2

Totally depressurize the rear drag axle

3

Disconnect the power supply with the main battery switch

Danger

Risk of explosion from explosive gas. Risk of poisoning and caustic burns from swallowing battery electrolyte. Risk of injury through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries

No fires, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

4

Disconnect battery ground cable

Only for vehicles without a battery main switch.

Topical note

Notes on battery

AH54.10-P-0001-01A

5

Disconnect the compressed air lines (17) from the lifting device

Protect the openings against contaminants that may enter.

6

Loosen the nuts (9) and remove the arc (1)

Check the bows (1) for wear. If the bows (1) are reused, do not twist the nuts (5).

7

Remove the crosspiece (11) with the support (12)

If the crosspiece (11) and bracket (12) cannot be released from the lifting bellows (16), loosen the nuts (10) and remove the crosspiece (11) from the bracket (12).

8

Remove the lifting bellows (16)

Check the support surfaces between the brackets (12, 15) and the lifting bellows (16) for damage and corrosion. Replace the damaged parts.
If the lifting bellows (16) do not loosen the support (15), loosen the nuts (13) and remove the support (15) with the lifting bellows (16) of the bellows bracket (14).

9

Loosen the screws (3) and the nuts (4) and remove the bellows bracket (14)

Only if the bracket (15) has been removed.

10

Loosen the screws (7) and nuts (8) and remove the bellows console (6)

Check the consoles (6) for deformations and cracks. Replace if necessary.

Check

11

Clean all components and check for damage and cracks

Replace the damaged parts.

Install

12

Install the bellows consoles (6)

Type 958.0/1Bellows console on chassis

*BA32.22-B-1005-03D

Type 934.241/251, 958.2/4Bellows console on chassis

*BA32.22-B-1005-03E

13

Install the support (15) on the bellows bracket (14)

Only if the support (15) has been removed from the bellows bracket (14).

14

Install the bellows bracket (15) with the support (14)

Only if the bracket (15) has been removed.

Type 958.0/1Support for the lifting bellows on the console

*BA32.22-B-1004-03D

Type 934.241/251, 958.2/4Support for the lifting bellows on the console

*BA32.22-B-1004-03E

15

Install the lifting bellows (16) on the bracket (15)

16

Install the support (12) on the crosspiece (11)

Only if the support (12) has been removed from the crosspiece (11).

17

Install the crosspiece (11) with the support (12)

18

Install the nuts (5) on new bows (1)

Only when new bows are used (1).

The positions of the nuts (5) on the new bows (1) should be correspond to the positions of the nuts (5) on the bows (1) removed.

19

Install the bows (1) and tighten the nuts (9)

Type 934.241/251, 958.2/4Lifting bellows arch

*BA32.22-B-1006-03E

Type 958.0/1Lifting bellows arch

*BA32.22-B-1006-03D

20

Install the compressed air lines (17) on the lifting device

Check

21

Measure the clearance (C) between the bows (1) and the tubular housing of the axle (2)

The clearance (C) should be adjusted so that the stroke (B) is not too wide so as to cause leakage on the lifting bellows (16).

If the existing clearance (C) does not match the prescribed value:

Adjust the clearance (C)


AR35.50-B-3593-01TA

"C" clearance between the arc and the axle tube housing

*BE35.50-B-1002-02B

"B" travel between the lift installation supports

*BE35.50-B-1001-02B

22

Retighten the nuts (9) to the prescribed torque

Type 958.0/1Lifting bellows arch

*BA32.22-B-1006-03D

Type 934.241/251, 958.2/4Lifting bellows arch

*BA32.22-B-1006-03E

23

Measure the protrusion of the thread (A) in the bows (1)

If the thread protrusion (A) exceeds approx. 10 mm:

Cut the spare thread.

Danger

Risk of explosion from explosive gas. Risk of poisoning and caustic burns from swallowing battery electrolyte. Risk of injury through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries

No fires, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

24

Connect ground cable to battery

Only for vehicles without a battery main switch

Topical note

Notes on battery

AH54.10-P-0001-01A

25

Connect the power supply to the main battery switch

Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

26

Start the engine and actuate the compressed air system to the working pressure

27

Lift and lower the rear drag axle several times to adjust the components


Before actuation of the lifting equipment, verify, without any reservations, the steadiness of the nuts (9).
Otherwise, the loosen nuts could cause damages to the lifting bellows (16).

28

Run the tightness test on the lifting device.

Rear driven axle

Number

Designation

Rear axle 749.118/916

Rear axle 749.111/119/164/919/921

BE35.50-B-1001-02B

"B" travel between the lift installation supports

Lifted rear driven axle

mm

260

260

Drained rear driven axle, installation of depressurized lifting

mm

70

70

Rear driven axle

Number

Designation

Rear axle 749.118/916

Rear axle 749.111/119/164/919/921

BE35.50-B-1002-02B

"C" clearance between the arc and the axle tube housing

Vehicle unloaded or without body

mm

10

10

Vehicle with body or semi-trailer

mm

10...15

10...15

Air suspension

Number

Designation

Model 958.0/1

BA32.22-B-1004-03D

Support for the lifting bellows on the console

Nm

110

Air suspension

Number

Designation

Model 934.241/251, 938.14, 958.2/4

BA32.22-B-1004-03E

Support for the lifting bellows on the console

Nm

110...140

Air suspension

Number

Designation

Model 958.0/1

BA32.22-B-1005-03D

Bellows console on chassis

M12

Nm

110...120

M14

Nm

150...180

Air suspension

Number

Designation

Model 934.241/251, 938.14, 958.2/4

BA32.22-B-1005-03E

Bellows console on chassis

M14

Nm

150...180

Air suspension

Number

Designation

Model 958.0/1

BA32.22-B-1006-03D

Lifting bellows arch

Nm

300

Air suspension

Number

Designation

Model 934.241/251, 938.14, 958.2/4

BA32.22-B-1006-03E

Lifting bellows arch

Nm

260...300

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