Tire Installation

TM 10-3930-630-34

c. The outside diameter of the ram must be small

enough to fit loosely in the insert of the tire, but large

enough to rest squarely on the flat surface at the outer

edge of the wheel.

d. If outside edge of the wheel is not flush with the

edge of the metal insert in the old tire, measure how far

wheel is recessed inside the tire (fig. 7-6). New tire

must be replaced at the same position that worn tire is

installed on wheel.

e. Use a spacer, slightly smaller in diameter than

inside diameter of the tire insert and the same thickness

as the depth of the recess, to obtain proper amount of

recess.

f. Position wheel assembly with worn tire on top of

circular ram so outside of wheel is positioned upward.

The outside edge of the wheel has a chamfer to guide

the new tire onto the wheel. The chamfered edge must

always be the leading edge of the wheel whenever a tire

is pressed onto a wheel.

g. Center wheel assembly on top of ram and make

certain they match squarely.

Figure 7-6. Wheel recess measurement.

h. Position new tire on top of wheel and tire

assembly. Align new tire and wheel so the two are

l. Position spacer, refer to step e, inside the new tire

concentric with each other.

so it rests squarely on the outer edge of the wheel.

i. Start pressing new tire onto wheel and worn tire off

Continue pressing until new tire is correctly positioned

the wheel. Run press slowly for first couple of inches of

on the wheel.

travel because this is the critical state of the pressing

m. Release press and remove wheel, with new tire

operation.

assembled, from ram. Remove worn tire from press

j. If tire begins to cock, stop press immediately and

table. Wipe off grease and inspect wheel and tire

realign tire. A sharp jar with a soft mallet will usually

assembly.

realign tire on wheel.

k. If wheel is to be recessed in tire, stop press after

7-8. Tire Installation

tire is started on the wheel.

Refer to paragraph 7-4 and install the wheel and tire on

the lift truck.

7-4