Ariens 924 SNO-THRO 924112 Service Manual download pdf (Page 35)

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10.1 CAST IRON GEAR CASE (WORM

GEAR)

Remove auger/impeller and gear case from housing

referring to Auger/Impeller Section.

Remove four bolts from bearing flange (Figure 32).

Remove flange and gasket.

NOTE: At this point bronze gear cannot be removed.

Using bearing adjustment wrench remove adjustment

plug.

While holding input shaft in one hand and using a

mallet, strike case until bearing cone pops out of the

case.

Bronze gear can then be removed from case.

After bronze gear is removed, input shaft can then be

removed.

NOTE: It is not necessary to remove the end cap from

case.

To remove worm gear and bearings, remove bolt and

washer from end of shaft. Then remove the bearing,

spacer, worm spacer, and bearing.

Assembly is done by inserting bronze and worm gear

at same time.

Using adjustment wrench, tighten down on adjustment

plug until input shaft is snug.

Replace side cover using a sealant on threads of two

bottom bolts.

Fill gear case with L-2 oil until level reaches bottom of

threads in filler hole.

Check oil level periodically. Oil level must be up to oil fill

hole. Change oil every 25 hours or once each season,

whichever comes first. Fill with Ariens Special L-2 Gear

Lubricant (P/N 000080). Use approximately 5 oz.

10.2 ALUMINUM GEAR CASE

Remove auger/impeller and gear case from housing

referring to Auger/Impeller Section.

Remove eight bolts that hold right and left gear case

halves together (Figure 33).

If flange bushings need replacement, first remove

seals from outside of gearcase halves with a

screwdriver. Flange bushings can then be pressed out

from outside in with a bearing driver. Bushings are very

lightly pressed in.

When replacing bushings make sure the flat on the

flange of bushing fits in the inside notch of the case.

There are two special washers, one on either side of

bronze gear. If burred or worn they should be replaced.

Holding bronze gear on rake shaft is a groove pin.

When driving out, drive in direction of least resistance.

the flat on bronze gear face will fill the hole in the side

of the gearcase.

Remove bronze bushing from front of worm shaft by

sliding it off. Replace if necessary. Notice that a flat on

the bushing flange positions the bearing inside the

gearcase.

Behind the rear bronze bushing is a seal which fits into

a groove in the gearcase. It should be replaced at time

of repair.

Rear bushing is a larger diameter than one in front, but

are identical in design. Replace if necessary.

If replacement of thrust collar is necessary, drive out

groove pin towards direction of least resistance.

Inspect worm for burrs or black coloration. If either

show up, replace shaft.

To assemble, make sure the case is sealed using

Loctite and make sure the flats on the bushings are in

their proper place.

This case requires 8 oz. L-2 lube (P/N 00008000) and

should be half full.

After assembly is complete you should be able to turn

input shaft freely.

Auger/impeller gearcase is lubricated with Ariens L-2

lube (P/N 00008000). Lubrication should be even with

inspection hole with unit sitting level. Unit will not be

damaged by over-lubricating.

SECTION 10 - GEAR CASE

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Ariens 924 SNO-THRO 924112 Service Manual Page 35

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