Ariens SNO-THRO 924326-ST1336LE - Manual (Page 18)

Attachment Clutch/Impeller Brake
AUGER / IMPELLER MUST STOP within 5 seconds
when Attachment Clutch / Impeller Brake lever is
released or unit damage or serious injury may result.
To Properly Adjust Attachment Clutch / Impeller Brake:
1. Remove belt cover. Adjust attachment clutch with
both clutch lever and clutch arm in disengaged
position. Spring should expand approximately 3/8”
(9,5mm) beyond free state when clutch is engaged.
Clutch arm at the lower end will then return to its
maximum down position. When clutch is disengaged
there should be a slight amount of slack in the
attachment cable. There should be a slight amount
of slack in the cable to allow for brake wear.
Spring extension is to be obtained only by proper
positioning of the attachment idler.
2 .
3.
4.
Move the attachment idler toward the belt to
increase spring extension. Approximately 1/8" {3,2
mm) movement of the idler will increase spring
extension by 1/8" ((3,2 mm). Spring should extend
approximately 3/8" (9,5 mm) when clutch is engaged
but allow clutch arm (at lower end) to return to it's
maximum down position when clutch is disengaged.
To check and/or adjust impeller brake, tip unit
forward onto auger/impeiler housing. Remove
bottom cover by removing four cap screws.
Measure distance between impeller brake shoe pad
and belt with attachment clutch engaged (Figure 15).
Impeller brake shoe should be 1/16" (1,6 mm)
minimum from belt. When attachment clutch is
disengaged, brake must contact belt.
1
.
2
.
3.
Drive Beit
Brake Shoe
and pad
1/16" (1,6 mm)
minimum
between Shoe
Pad and Beit
Figure 15
Traction Drive Clutch
Adjust traction clutch to compensate for wear of friction
wheel when slippage occurs.
To adjust traction clutch, place speed selector in First (1)
Forward and tip unit forward onto housing.
With traction clutch disengaged turn wheels while
tightening adjustment nut (Figure 14), at clutch yoke,
until wheels begin to drag. Engage and release traction
clutch to align clutch linkage. Repeat as necessary.
When wheel drag is obtained with linkage aligned, turn
nut back three turns. Wheels will then turn freely.
Speed Selector
1. Tip unit fonAfard onto housing.
2. Remove cotter pin (Figure 14) and pull shift rod out
of chassis until it stops, put speed selector lever into
reverse panel notch. Two notches are available,
place in last notch (Figure 16).
3. Adjust length of shift rod until rod end passes into
hole on selector lever arm.
4. Tighten jam nut (Figure 14).
5. Install rod into arm hole and secure with cotter pin.
Drive Chain
Chain should be taut with little or no play in it. To
compensate for looseness or excessive tightness in
drive chain.
1. Remove bottom cover by removing four cap screws.
2. Loosen two nuts on reduction shaft (Figure 9), move
reduction sprocket up or down equally in slot as
necessary and torque the nuts to 14-15 ft. lbs.
(18,6-20,0 Nm).
14 Ariens® 924 Sno-Thro Rev. 9/98