Remove/install lift bellows of trailing axle

AR35.50-W-0016A

Remove/install lift bellows of trailing axle

15.3.12

16.3.12

Value modified: Mounting console to frame,

*BA32.22-N-1007-03A

Value modified: Mounting console to frame

*BA32.22-N-1005-03B



Removing



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

1

Park vehicle on a level surface above pit

 Perform all work with vehicle unloaded.

2

Lower liftable trailing axle completely

3.1

Interrupt power supply using battery disconnect switch

 Danger!

Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices

No fire, sparks, open flames or smoking.

Wear acid-resistant gloves and clothing and safety glasses with side guards.

Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground.

Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

3.2

Disconnect ground lead from battery

Only vehicles without battery disconnect switch.



Notes on battery

AH54.10-P-0001-01A

4

Disconnect compressed air line (17) from lifting device

 Take measures to prevent dirt from entering the openings.

5

Unscrew nuts (9) and remove brackets (1)

 Check the brackets (1) for wear.
If the brackets (1) are to be reused, do not twist the nuts (5).

6

Remove crossmember (11) with base (12)

 Use an assembly lever. If the crossmember (11) and base (12) do not detach from the lift bellows (16), unscrew the nuts (10) and remove the crossmember (11) from the base (12).

7

Remove lift bellows (16).

 Check the contact surfaces between the bases (12, 15) and lift bellows (16) for damage and corrosion; replace damaged parts.

 If the lift bellows (16) does not detach from the base (15), unscrew the nuts (13) and remove the base (15) with the lift bellows (16) from the crossmember (14).

8

Unscrew bolts (3) and nuts (4) and remove crossmember (14)

Only if the base (15) was removed.

9

Unscrew bolts (7) and nuts (8) and remove mounting consoles (6)

 Check the mounting consoles (6) for deformation and cracks; replace if necessary.



Checking

10

Clean all components and check them for damage and cracks

 Replace damaged parts.



Install

11

Install mounting consoles (6)

 Model 958.0

*BA32.22-N-1005-03B

 Model 958.2/4

*BA32.22-N-1007-03A

12

Attach base (15) to crossmember (14)

Only if the base (15) was removed from the crossmember (14).

13

Install crossmember (14) with base (15)

Only if the base (15) was removed.

 Model 958.0

*BA32.22-N-1004-03B

 Model 958.2/4

*BA32.22-N-1006-03A

14

Attach lift bellows (16) to base (15)

15

Attach base (12) to crossmember (11)

Only if the base (12) was removed from the crossmember (11).

16

Install crossmember (11) with base (12)

17

Screw nuts (5) onto new brackets (1) (position of nuts must correspond to their previous position on removed brackets (1))

Only if new brackets (1) are used.

18

Install brackets (1) and tighten nuts (9)

19

Connect compressed air line (17) to lifting device



Checking

20

Measure play (C) between the brackets (1) of the lifting device and the axle tube (2) of the trailing axle

 If the play (C) does not match the specified value:



*BE35.50-N-1002-02C

Adjust play (C)

The play (C) must be adjusted so that the travel (B) does not become too great and does not cause leakage at the lift bellows (16).

*BE35.50-N-1001-02C

Check/adjust lift bellow brackets on liftable trailing axle

AR35.50-W-3593-01A

21

Tighten nuts (9) to specified torque

 Model 958.0

*BA32.22-N-1006-03B

 Model 958.2/4

*BA32.22-N-1008-03A

22

Measure thread projection (A) at brackets (1); cut off projecting thread if necessary

 The thread projection (A) must not exceed approx. 10 mm.

 Danger!

Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices

No fire, sparks, open flames or smoking.

Wear acid-resistant gloves and clothing and safety glasses with side guards.

Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground.

Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

23.1

Connect ground cable to battery

Only vehicles without battery disconnect switch.



Notes on battery

AH54.10-P-0001-01A

23.2

Switch on power supply at battery disconnect switch

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

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

AS00.00-Z-0005-01A

24

Start engine and bring compressed air system up to operating pressure

25

Raise and lower liftable trailing axle several times to adapt components

 Before actuating the lifting device, always check that the nuts (9) are fitted securely; loose nuts (9) can result in damage to the lift bellows (16).

 Perform a leak test on the lifting device.

Number

Designation

Model 958.0 with rear axle 749.916

Model 958.2 with rear axle 749.919

BE35.50-N-1001-02C

Travel "B" between supports of lifting device

Trailing axle raised

mm

260

260

Trailing axle lowered, lifting device unpressurized

mm

70

70

BE35.50-N-1002-02C

Play "C" between bracket and axle tube

VEH without load or body

mm

10

10

VEH with body or semi-tractor

mm

10...15

10...15

Number

Designation

Model 958.4 with rear axle 749.919/921

BE35.50-N-1001-02C

Travel "B" between supports of lifting device

Trailing axle raised

mm

260

Trailing axle lowered, lifting device unpressurized

mm

70

BE35.50-N-1002-02C

Play "C" between bracket and axle tube

VEH without load or body

mm

10

VEH with body or semi-tractor

mm

10...15

Number

Designation

Model
958.0

BA32.22-N-1004-03B

Lift bellows support to mounting console

Nm

125

BA32.22-N-1005-03B

Mounting console to frame

M12

Nm

115

M14

Nm

165

BA32.22-N-1006-03B

Bracket to lift bellows

Nm

280

Number

Designation

Model
958.2/4

BA32.22-N-1006-03A

Lift bellows support to mounting console

Nm

125

BA32.22-N-1007-03A

Mounting console to frame

M14

Nm

165

BA32.22-N-1008-03A

Bracket to lift bellows

Nm

280