Service Manual

7-6 Power Max Service Manual

AUGER GEARBOX

AUGER GEARBOX REPAIR

Lubrication

The proper lubricant is 90-weight gear oil. A multi-weight

such as 85-120 is acceptable as long as it encompasses

the 90-weight rating. The oil must also have an extreme

pressure (EP) rating of GL5 or higher. With the gearbox

setting approximately level, ﬁ ll until oil runs out of the ﬁ ll/

check plug. Total capacity is about 4 oz. (118ml).

4. The impeller shaft can now be removed (Fig. 089).

Fig 089 DSC-0061

Fig 088 MVC-900XA

1. All models use a cap screw and locknut to secure

the augers to the auger shaft. Remove the cap

screw and slide the auger off of the shaft (Fig. 088).

5. Clean the output shaft and slide the case halves off.

Remove and discard the seals.

6. Clean and inspect the auger shaft bushings in the

case halves. If they are damaged or worn, press

them out of the case halves at this time.

7. Slide the worm gear off of the shaft. Remove the

woodruff key.

8. Slide the bushing, thrust washers, thrust bearing,

snap ring, and seal from the impeller shaft.

Gearbox Disassembly and Repair

2. The impeller is attached to the impeller shaft with

two cap screws and locknuts. Remove the cap

screws and slide the impeller off of the shaft.

3. Even if you have drained the oil, we recommend

supporting the gearbox over a drain pan when you

separate the case halves. Remove the screws and

separate the case halves.

A. Ring C. Worm gear

B. Impeller Shaft/Worm