MAINTENANCE AND REPAIR INSTRUCTIONS

SERVICING THE UNIT

Extreme care and knowledge of the system is required when servicing this unit. Service should be performed by qualified service personnel only. Replacement parts for this unit must be identical to the parts they replace. Refer any repair to an authorized service dealer.

INSPECTING/REPLACING THE DRIVE BELT

When servicing the unit, use only original equipment manufacturer replacement parts. Inspect the drive belt once a year or every 50 hours of operation, whichever comes first, for wear. If the drive belt needs to be replaced, use the following instructions.

WARNING: To avoid serious personal injury, turn off the unit and allow it to cool. Unplug the unit before you perform any maintenance.

1.Remove the flange lock nut from the belt case cover with a wrench or nut driver (Fig. 9).

2.Remove the seven (7) screws from the belt case cover using a #T20 Torx bit or flat blade screwdriver (Fig. 9).

WARNING: To reduce the risk of electrical shock, replace the cover before connecting the unit to a power source.

Belt Tensioner

(Idler Arm)

Drive Pulley

Belt

 

Driven

 

Pulley

Washer

Fig. 10

5.Reinstall the cover with the seven (7) screws. To make installation easier, place the narrow part of the cover into the recess of the housing. Install the top two screws, then push the rest of the cover down into the recess and over the rotor shaft (Fig. 10a). Torque all seven (7) screws to 18- 23 in•lb (2.0-2.5 N•m).

6.Reinstall the flange lock nut. Torque the nut to

80-100 in•lb (9.0-11.2 N•m).

NOTE: If the flange lock nut is damaged, do not replace it with a standard nut. Replace only with an original equipment manufacturer replacement part.

Cover

Screws (7)

Flange Lock Nut

Fig. 9

3.Pull the belt tensioner (idler arm) away from the drive pulley. Remove the damaged or broken belt from the driven pulley and drive pulley inside of the housing.

Discard appropriately (Fig. 10).

4.Loop the new belt around the drive pulley and driven pulley (Fig. 10). Pull the belt tensioner (idler arm) away from the drive pulley to install the belt around the drive pulley.

NOTE: Make sure the washer is still in place on the driven pulley shaft prior to reinstalling the belt case cover.

Drive Pulley

Belt Tensioner

Belt

Drive Belt

Retainer

Driven

Pulley

Rotor

Shaft

Fig. 10a

WARNING: When refitting the belt back into the main housing, be sure that the belt is to the right of the Drive Belt Retainer. If the belt is placed to the left, serious damage may occur.

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