Rigmaster 2007 RigMaster

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RigMaster Service and Repair Manual

Document # S280909

S2.8 Replacing Fan Belt for 25A and 40A Alternators

To replace the fan belt, the right-hand side chamber must be removed. It is also necessary that

the engine cooling fan be removed.

Procedure

1. Remove the right hand side panel using a 7/16 socket.

2. Loosen the adjustment bolt using a 12mm wrench and a 12mm

socket.

3. Loosen the pivot bolt using a 12mm socket.

4. To remove the fan belt, slide the alternator down towards the

engine and remove the belt.

5. Install the new fan belt and slide the alternator up towards the top

of the engine using a 16 inch pry bar until the belt deflection is less than 6 mm. (1/4").

6. When the fan belt is tensioned, tighten the adjustment bolt using a 12mm wrench and 12mm

socket. Then tighten the pivot bolt using a 12mm socket.

7. Reinstall the right hand side panel using a 7/16 socket. Make sure the shroud on the side

panel does not touch the engine fan blade.

CAUTION

Inspect the fan for broken blades or worn tips; if the blade(s) are damaged check the engin

mounts and bottom stiffeners for damage, loose bolts or worn engine mounts. Also see

that a foreign object did not enter the engine compartment.

CAUTION

Ensure that the alternator pivot bolt is secure and the spacer

and bushing is in place.

Failure to do this will result in premature belt wear and damage to the alternator belt

tensioning arm.

TOOLS REQUIRED

12mm Wrench

3/8 Ratchet

12mm Socket

7/16 Socket

16 inch pry bar

Rigmaster 2007 RigMaster - Page 11