Ariens 924 SNO-THRO 924109 - Manual (Page 29)

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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 22).
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, simply remove bolt
and washer from end of shaft.
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 six bolts that hold right and left gear case
halves together (Figure 23).
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, again drive
out groove pin towards direction of least resistance.
Inspect worm for burrs or black coloration. If either
show up, replace shaft.
For assembly, make sure the flats on the bushings are
in their proper place.
Apply Locktite 118 on the gear case half.
After assembly is complete you should be able to turn
input shaft freely.
Auger/impeller gearcase is lubricated with Ariens L-2
(P/N 00008000). Check lubrication by removing filler
plug on side of gear case just below left auger shaft.
Lubrication should be even with hole with unit sitting
level. Unit will not be damaged by over-lubricating.
SECTION 10 - GEAR CASE