KIC Catalog

Tire and Rim Safety Procedures.

4. For front assemblies, align the locators between the

spokes, then place the rim and inflated tire on the

cast spoke wheel.

5. For rear assemblies, align the locators between the

spokes, then place the inside rim over the cast spoke

wheel as far as possible. Push the spacer band over

the cast spoke wheel with a constant pressure on both

sides. Guard against cocking. The band should fit

snugly to the spokes and against the inside rim gutter

edge. Place the outer dial rim in position.

Note:

8.5 and wider tube type rims may require

special size spoke wheels and spacer bands.

6. Secure clamps evenly in position and snug-up the

nuts in the sequence shown in

Figure 3

7. Do not tighten nuts fully until all of them have been

snugged up This will permit the rims to properly align

themselves on the 28 degree mounting surfaces of

the cast spoke wheel. Correct alignment if necessary

at this time. Tighten the nuts to the recommended

torque (see

Table 2

). Maintain them at that level

through planned, periodic checks. Be sure not to

exceed the recommended torque values. If the heel

of the rear clamps bottom out before reaching 80% of

the recommended torque levels, ensure that proper

clamps and spacers are being used. Complete the

tire inflation to the recommended level.

8. After a demountable rim has been installed, recheck

the torque on the clamp nuts between 50 and 100

miles of operation and retighten the nuts to the

proper torque level using the proper nut tightening

sequence.

9. It is recommended that a torque check be made as

part of a vehicles scheduled maintenance program or

at 10,000-mile intervals whichever comes first. Indi-

vidual fleet experience may dictate shorter intervals

or allow longer intervals.

10. If air wrenches are used, they must be periodically

calibrated for proper torque output. Use a torque

wrench to check the air wrench output. If output is not

correct, take the necessary steps to adjust output.

Note:

Demountable rims are not all the same offset. Use

the proper size tires, rims, spacer and clamps to provide

tire and vehicle clearance.

Wheel Installation & Maintenance

TMC Recommended Practices: Used by permission

TABLE 1

RECOMMENDED MOUNTING TORQUE FOR DISC WHEELS

Mounting Type

Nut Thread

Torque Level

Ft-Lb (Oiled*)

Hub Piloted with flange nut

11/16" - 16

M20 x 1.5

M22 x 1.5

300-400

280-330

450-500

Ft-Lb (Dry)

Stud-Piloted, double cap nut

Standard type (7/8" radius)

3/4"-16

1-1/8"-16

450-500

Stud-piloted, double cap nut

Heavy duty type (1-3/16"" radius)

15/16"-12

1-1/8"-16

1-5/16"-12

750-900

* See "Disc Wheel Installation Procedure-Hub Piloted Disc Wheel System", Step 10

Notes:

If using specialty fasteners, consult the manufacturer for recommended torque

levels.

Tightening wheel nuts to their specified torque levels is extremely important. Under

tightening which results in loose wheels can damage wheels, studs and hubs and

can result in wheel loss. Over tightening can damage studs, nuts and wheels and

result in loose wheels as well.

Regardless of the torque method used, all torque wrenches, air wrenches and any

other tools should be calibrated periodically to ensure the proper torque is applied.

TABLE 2

RECOMMENDED MOUNTING TORQUE

FOR DEMOUNTABLE RIMS

Stud Size

Torque Level

Ft. Lbs. (Dry)

5/8"-11

3/4"-10

160-200

200-260