Troy-Bilt 42012 - Manual (Page 22)

22
Section 5: Maintenance
Lubrication
At the beginning and end of each season
or after every 25 hours of operation,
lubricate the unit as recommended below:
1. Lightly oil both the deflector chute cap
pivot points (D, Fig. 5-3).
2. Lightly oil the discharge chute control
rod pivot points where the control rod
enters the control panel bearing
(E, Fig. 5-4), the support tab
(F, Fig. 5-4), and the support on the
left rear of unit housing (G, Fig. 5-6).
3. Remove the left wheel (H, Fig. 5-3).
Clean the wheel shaft and apply multi-
purpose grease to the wheel shaft.
Reinstall the left rear wheel.
4. Apply oil to the bearings on sides of the
auger shaft (J, Fig. 5-3).
5. Clean dirt and old grease from the
flange at the bottom of the discharge
chute (K, Fig. 5-3). Apply multi-purpose
grease to the worm gear (C), toothed
portion of flange and the flange.
6. Lightly lubricate the handlebar control
levers at pivot points (M, Fig. 5-4) with
oil or a non-silicone spray. Do not get
oil or lubricating spray on levers.
7. Lightly oil the pivot points on the gear
shift control lever (N, Fig. 5-4).
8. Remove the two shear bolts (C, Fig. 5-
7) from the auger shaft, then lubricate
the four auger grease fittings (O, Fig.
5-7) using a grease gun. Rotate auger
three or four times. Reinstall shear
bolts, torque to 11 ft-lbs (15Nm).
9. Check the auger gear case oil level :
a. Place the unit on a smooth, level
surface. Unscrew the plug
(P, Fig. 5-7) from the front of
gear case.
b. Inspect plug hole. Oil should just
begin to seep out of the hole. Add
SAE 90 gear oil if necessary until
oil just begins to flow out of hole.
Let the excess oil drain out of the
gear case.
c. Reinstall the plug (P). 10. Remove bolts (Q, Fig. 5-6) securing
bottom cover to unit. Remove bottom
cover. Put gear shift lever in highest
speed setting and apply a coating of
multi-purpose grease to the shafts (R
and S, Fig. 5-5). Prevent grease from
contacting rubber drive wheel (T) or
drive disk (U). If grease should contact
these parts, wipe clean to avoid
slippage and assure proper operation.
Move shift lever between high speed
and reverse settings to spread grease
along shafts. Replace bottom cover.
Wheel Drive Disc Adjustment
Due to wear, the wheel drive control disc
may begin to slip when wheel drive
lever is engaged. To adjust wheel drive
disc:
1. Pull the wheel drive control arm
(V, Fig. 5-6) down completely.
2. Measure and note the distance
between the coiled ends of the spring
(W, Fig, 5-6).
3. Squeeze wheel drive control lever (X,
Fig. 5-3) against handlebar. Measure
Fig. 5-3
J
K
Fig. 5-4 F
D
X
M
N
E
M
AB
H
C
Fig. 5-5
R
S
T
U