Ariens 924 - Manual (Page 36)

Reduction Drive
5.1 Introduction
A
WARNING: Gasoline is highly flammable
and its vapors are explosive. Handle with
care.
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
bottom cover.
A
WARNING: Remove wire from spark plug
before attempting any repair or adjust­
ment procedures.
5.2 Differential, Lockout and Axle
Remove groove pin that secures lockout assembly
to left hand axle and lockout assembly from shaft.
(Pin is tapered and must be driven from small
end.)
Remove roll pin that secures knob, spring and pin
to lockout hub.
Remove L.H. axle from unit.
Remove roll pin from R.H. axle, then remove
differential from axle while sliding axle from unit.
(Differential is serviced as a complete assembly.)
Check L.H. axle bushings and other parts for wear
or damage and replace as necessary.
Assemble in reverse order.
On units with spur gear, to remove axle, remove
cotter pins that secure wheel hubs to axle, roll pins
from axle and parts from unit.
Check components for wear or damage and replace
as needed.
Assemble in reverse order.
5.3 Axle Bearings
To replace axle bearings, remove axles per above
instructions.
Remove cap screws and lock nuts that retain
bearing retainer and bearing on frame.
Assemble in reverse order.
5.4 Pinion, Shaft and Sprocket
Remove L.H. rear wheel per instructions in Speed
Selector and Wheels Section.
Remove the roll pins from pinion shaft. Note
position of washers and remove shaft from frame.
Check pinion and sprocket bushings as well as
other parts for wear or damage and replace as
necessary.
Assemble in reverse order.
5.5 Reduction Shaft
Remove nuts and lock washers from ends of reduc­
tion shaft.
Remove shaft and reduction sprocket from unit.
Check reduction sprocket bushings and other parts
for wear or damage and replace as necessary.
Assemble in reverse order and adjust chain per
instructions in Drive Chain Adjustment.
5.6 Hex Shaft
Hold hex shaft on sprocket end with a wrench and
remove lock nut at outside of frame. Slide hex
shaft to center of frame until it clears sprocket and
remove 9 tooth sprocket.
To service hex shaft ball bearing, remove four lock
nuts from bearing flanges then flanges and bearing
from unit.
Check parts for wear or damage and replace as
necessary.
Assemble in reverse order being sure that washers
are in position at outside of bearing flanges.
5-4