4 MAINTENANCE
26
4.19 TIRES ___________________________________________________________________
1. Keep tires properly inflated to prolong tire life. Check
inflation pressure while the tires are cool. Inspect
tread wear.
2. Check pressure yearly. Use an accurate, low
pressure tire gauge.
3. Keep tires inflated to proper pressure
Tractor: 20-22 psi (138 -152kPa).
Decks: 20-25 psi (138 -173 kPa)
4.20 WHEEL MOUNTING PROCEDURE____________________________________________
Tractor Wheels
1. Remove dirt, grease and oil from stud thread. Do not
lubricate threads.
2. Position wheel on hub and inspect to insure full
contact between mounting surface of wheel and hub
or brake drum.
3. Finger tighten all hardware then torque hardware in
crisis-cross order; always tighten nuts in the top
position.
NOTE:
Check and torque lug bolts daily for the first 100
hours of operation.
4. After recieving new unit or if tires were removed,
check and torque lug bolts daily until torque is
maintained, 65-75 ft.lbs. (88-102 Nm)
Caster Wheels
To extend bearing life check and adjust caster and gauge
wheels every year. Lubricate bearings every 100 hours
using NLGI Grade 2 grease.
1. Raise deck so wheels are off ground and can be
rotated freely by hand.
2. Check wheels for end play
(I)
. Wheels should rotate
freely with zero end play.
3. To eliminate end play, tighten inner nut
(G)
until
wheel just begins to bind then loosen it 1/4 turn.
Lock inner nut in position using outer nut
(H)
. Do not
allow inner nut to rotate while tightening outer nut.
4. Repeat step 2 and check for end play.
Figure 4H
CAUTION
Unless you have the proper training tools and
experience, DO Not attempt to mount a tire on a rim.
Improper mounting can produce an explosion which may
result in serious injury.
!
WARNING
Make sure the tractor is parked on a solid and level
surface. Never work on a tractor that is supported only
by the jack. Always use jack stands.
If only the front or rear of the tractor is raised, place
chocks in front of and behind the wheels that are not
raised.
!
G
H
I
HR021
Summary of Contents for 70528
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