Use caution when lifting or handling a wheel and tire assem-
bly. It is very heavy and could cause injury if improperly
lifted or if it should fall on you.
3-4. Changing a Wheel and Tire Assembly.
a. In case of a flat, stop the truck where there will be no hazard to other traffic or
to the crew members changing the tire. Notify Organizational Maintenance as
soon as possible so the spare wheel lug nuts can be torqued and the flat tire can
be repaired and returned to service.
b. A spare wheel and tire assembly is provided on the M915A1 truck tractor. A tire
hoist is provided to raise and lower the spare wheel and tire assembly from the
c. When changing tires, do not substitute type or size tire unless all tires on the truck
can be converted. Keep all tires the same.
d. Tire changing requires two people: one to operate the winch and a second to handle
the tire being winched up or down.
When lowering the spare, the brake disk will get hot. Do
NOT TOUCH IT. You can get burned.
When paying out cable from the hoist, LEAVE FOUR
F U L L T U R N S O F C A B L E O N T H E H O I S T D R U M .
Otherwise, a load on the cable could pull it loose from the
drum and cause injury to personnel.
If the brake starts smoking or shows other signs of
overheating, stop operation and allow 15 minutes for
b r a k e t o c o o l .
a. Remove the Spare Wheel and Tire.