MacDon M155 2022 - Tensioning Air Conditioner Compressor Belt; Replacing Air Conditioner Compressor Belt

215676 383 Revision A
Tensioning Air Conditioner Compressor Belt
During the first few hours of windrower operation, and after being replaced, the air conditioner compressor belt will need
to be tensioned.
DANGER
To prevent bodily injury or death from the unexpected startup of the machine, always stop the engine and remove the
key from the ignition before leaving the operator’s seat for any reason.
1. Shut down the engine, and remove the key from the ignition.
2. Open the hood to the lower position. For instructions, refer to 5.3.1 Opening Hood – Lower Position, page 316 .
1000078
A
B
Figure 5.118: A/C Compressor
3. Loosen compressor mounting hardware (B).
4. Pry the compressor away from the engine so that a force of
35–55 N (8–12 lbf) applied to the midspan of belt (A)
causes a deflection of 5 mm (3/16 in.).
5. Tighten compressor mounting hardware (B).
6. Recheck the belt tension. Repeat this procedure as needed.
7. Close the hood from the lower position. For instructions,
refer to 5.3.2 Closing Hood – Lower Position, page 317.
Replacing Air Conditioner Compressor Belt
If the air conditioner compressor belt shows evidence of wear or damage, it will need to be replaced.
DANGER
To prevent bodily injury or death from the unexpected startup of the machine, always stop the engine and remove the
key from the ignition before leaving the operator’s seat for any reason.
1. Shut down the engine, and remove the key from the ignition.
2. Open the hood to the lower position. For instructions, refer to 5.3.1 Opening Hood – Lower Position, page 316 .
1000078
A
B
Figure 5.119: A/C Compressor
3. Loosen compressor mounting hardware (B). Push the
compressor toward the engine to release the tension on
the A/C compressor belt.
4. Remove belt (A) from the compressor.
5. Install new compressor belt (A).
6. Pry the compressor away from the engine so that a force of
35–55 N (8–12 lbf) applied to the midspan of belt (A)
causes a deflection of 5 mm (3/16 in.).
7. Tighten compressor mounting hardware (B).
8. Recheck the belt tension. Repeat this procedure as needed.
MAINTENANCE AND SERVICING