Jacobsen HR 5111, Service And Repair Instructions

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GENERAL
Tires are subject to damage from sharp objects. If large
punctures or tears occur, it is advisable to take the tire
(installed on the wheel) to a qualified tire repair shop.
The front drive wheels are bolted directly to the wheel
hub which is part of the front axle assembly. See
Section 4 for bearing repair.
The rear drive wheels are bolted directly to the wheel
hub mounted to the motor. There are no wheel bear-
ings to repair or service.
SERVICE
Tires are inflated to 20 to 24 psi (1.4 to 1.6 bars) front,
and 6 to 10 psi (.41 to .68 bars) rear. This pressure
gives the best results for average use. Tire pressure
should be equal for each set of tires.
If a tire is removed from the rim it should be inflated to
approximately 30 to 35 psi (2.0 to 2.4 bars), when it is
replaced. This assures proper seating of the tire bead
to the rim. Then reduce the pressure to the desired
level before using.
NOTE
Never use grease or oil on the rim when mount-
ing a tire.
Bead sealing of the tires may be repaired by using tire
sealants available from tire repair shops. Always use
non-hardening tire sealant. Hardening type tire seal-
ants eliminate the cushioning effect from the pneu-
matic tire and can result in axle, differential, hydraulic
motor and frame failure. To apply sealant:
1. Break one bead from seal on rim and pull out past
rim flange at bottom or install through valve stem.
2. Pour sealant into tire cavity.
3. Reseat bead on rim by inflating the tire to 20 to 24
psi (1.4 to 1.6 bars).
4. Rotate tire slowly to spread compound.
5. Reduce tire pressure to specified pressure.
6. Torque front wheel nuts to 100–120 ft-lbs. (135–
162 N.m). Check torque daily until torque is main-
tained.
WHEELS & TIRES
SECTION 7C. TIRE SERVICE
7C-1
7C