Remove/install poly V-belt

AR13.22-P-1202A

Remove/install poly V-belt

24.9.08



Removing

1.1

Remove viscous fan clutch (26)

Engines with viscous fan clutch

 Left-hand thread

AR20.40-P-5660A

1.2

Remove electric fan

Engines fitted with electric fan

AR20.40-P-5000PR

2

Remove poly V-belt of compressor (10)

Engine 111 with compressor

AR13.21-P-1202A

3

Loosen poly-V-belt (11)

 Swivel tensioning arm (2) and tensioning pulley (3) in counter-clockwise direction at stud bolt (4, external torx E10) for this step.

 Do not swivel tensioning arm (2) against the nut attaching the tensioning pulley.

*001589760900

4

Take off poly V-belt (11)



Checking

5

Inspect belt pulley sections and tensioning device for damage and dirt.

6

Inspect poly V-belt (11)



Check poly-V-belt in visible area for wear

Except engine 111.977

AP13.22-P-1352Z

Engine 111.977

AP13.22-P-1351GH



Install

7

Fit on poly-V-belt (11), then clamp



Do not use belt wax or similar products.

In numerical order of relevant running diagram, beginning at tensioning pulley 

Running diagram of poly V-belt of engines not fitted with compressor

AR13.22-P-3902-02A

Running diagram of poly V-belt of engines fitted with compressor

AR13.21-P-3902-02A

Poly V-belt dimensions of engines not fitted with compressor

*BE13.22-P-1001-01B

Poly V-belt dimensions of engines fitted with compressor

*BE13.21-P-1002-01A



 The position marking (B) must be positioned within the working range (A). If this is not the case, inspect the length of the poly V-belt and also the tensioning device

*001589760900

8

Install poly V-belt of compressor

Engine 111.943/944/947/973/975

AR13.21-P-1202A

9.1

Install viscous fan clutch (26)

Engines with viscous fan clutch

 Left-hand thread

AR20.40-P-5660A

9.2

Install electric fan

Engines fitted with electric fan

AR20.40-P-5000PR

Number

Designation

Engine
111.943/944/
947/973/975
without AC
compressor with
power steering pump

Engine
111.943/944/
947/973/975
with AC compressor
with power steering
pump

Engine 111.944/ 944/947
without AC
compressor with
tandem pump

BE13.21-P-1002-01A

Length of belt of base drive

mm

1775

1875

1760

Number

Designation

Engine 111.944/ 947/975
with AC
compressor with
tandem pump

Engine 111.955 with AC compressor and with power steering pump

Engine 111.956/957/
958/983

BE13.21-P-1002-01A

Length of belt of base drive

mm

1860

1860

1870

Number

Designation

Engine 111 except
111.944/947/975
without AC compressor

Engine 111 except
111.944/947/975
with AC compressor

Engine 111 except
111.943/944/
947/973/975
without AC
compressor with
VDA power steering pump

Engine 111 except
111.943/944/
947/973/975
with AC
compressor with
VDA power steering pump

BE13.22-P-1001-01B

Belt length

mm

2040

2140

2055

2155