Disassemble/assemble cooling module

AR20.20-G-4100UH

Disassemble/assemble cooling module

17.12.2014

ENGINE

934.97 in MODEL 437.4

1

Engine radiator

2

Charge air cooler

3

Nut

4

Nut

1

Engine radiator

5

Coolant hose

6

Supporting frame

7

Connecting strut

8

Fan

9

Bearing housing

1

Engine radiator

2

Charge air cooler

10

Fan shroud

11

Nut

12

Disk spring

13

Nut

14

Disk spring

15

Foam belt



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A



Remove

1

Remove cooling module

AR20.20-G-4000UH

 

Disassemble/assemble

2

Unscrew nut (3) on engine radiator (1) and remove screw/bolt

When removing the engine radiator (1).

 Nut, mounting console to engine radiator

*BA20.20-N-1007-02C

3

Unscrew nut (4) on engine radiator (2) and remove screw/bolt

When removing the charge air cooler (2).

 Nut, mounting console to charge air cooler

*BA20.20-N-1008-02C

4

Lay cooling module with the front side on a workbench


Use a protective cover between the workbench and the cooling module.
Damage can occur otherwise to the cooling ribs on the engine radiator (1) or charge air cooler (2).

5

Remove coolant hose (5) from engine radiator (1)

6

Remove supporting frame (6) together with the connecting strut (7) from cooling module


The supporting frame (6) must be placed in such a way that the fan (8) stands vertically or the bearing housing (9) points upwards.
The viscous fan clutch can be damaged otherwise.

 Supporting frame to cooling module

*BA20.20-N-1009-02C

7

Mark the installation position of the bracket which is fastened with the screw/bolts of the fan shroud (10)

8

Remove screw/bolts of the fan shroud (10) at cooling module

 Assembly: Observe the marked installation position of the bracket.

9

Remove fan shroud (10) from cooling module

10

Unscrew nut (11) and remove screw/bolt together with the disk springs (12)

When removing the engine radiator (1).

 Assembly: The disk springs (12) must be installed again at the same location.
There are 10 disk springs (12) which are located sprung relative to each other.
For optimal positioning of the engine radiator (1), insert the screw/bolt for the nut (3) in the lower bracket.

 Nut, mounting console to engine radiator

*BA20.20-N-1007-02C

11

Unscrew nut (13) and remove screw/bolt together with the disk springs (14)

When removing the charge air cooler (2).

 Assembly: The disk springs (14) must be installed again at the same location.
There are 10 disk springs (14) which are located sprung relative to each other.
For optimal positioning of the engine radiator (2), insert the screw/bolt for the nut (4) in the lower bracket.

 Nut, mounting console to charge air cooler

*BA20.20-N-1008-02C

12

Remove foam belt (15) from charge air cooler (2)

 Assembly: Attach foam belt (15) along the contact area between the engine radiator (1) and the charge air cooler (2).



Clean

13

Clean surface for the foam belt (15) on charge air cooler (2)

14

Assembly in the reverse order



Install

15

Install cooling module

AR20.20-G-4000UH

 Engine radiator, coolant hoses and lines

Number

Designation

ENGINE 934.9 in MODEL 437

BA20.20-N-1007-02C

Nut, mounting console to engine radiator

M8

Nm

20

 Engine radiator, coolant hoses and lines

Number

Designation

ENGINE 934.9 in MODEL 437

BA20.20-N-1008-02C

Nut, mounting console to charge air cooler

M8

Nm

20

 Engine radiator, coolant hoses and lines

Number

Designation

ENGINE 934.9 in MODEL 437

BA20.20-N-1009-02C

Supporting frame to cooling module

M8

Nm

20