Ariens 924 - Manual (Page 54)

Gear Case
8.1 Introduction
A WARNING: Remove wire from spark plug
before attempting any repair or adjustment
procedures.
When unit is tipped to preform the service proce­
dures in this section, remove enough fuel so that no
spillage will occur, block securely and remove bot­
tom cover.
A WARNING: Gasoline is highly flammable
and its vapors are explosive. Handle with
care.
Remove Auger/Impeller and gear case from housing
per instructions in Auger/Impeller Section to pre­
form the following service procedures.
8.2 Cast Iron Gear Case (Worm Gear)
Remove four bolts from bearing flange.
Remove flange and gasket.
NOTE: At this point bronze gear cannot be re­
moved.
Using bearing adjustment wrench remove adjust­
ment 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 adjust­
ment 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 (Part No. 000080). Use
approximately 5 oz.
8.3 Aluminum Gear Case (Worm Gear)
Remove (6) six bolts that hold right and left gear-
case halves together.
If flange bushings need replacement, first remove
seals from outside of gearcase halves with a screw­
driver. 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 flat on the
flange of bushing fits in the inside notch of case.
There are (2) 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 resis­
tance. Flat on bronze gear face's fill hole side of
gearcase.
Remove bronze bushing from front of worm shaft
by sliding it off. If replacement is necessary, replace.
Notice a flat on the bushing flange when installed
sets against flat in gearcase.
Behind rear bronze bushing is an "0-Ring" which
fits into a groove in 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.
8-6