Replacement Procedures

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BRAKE DRUM SERVICE INFORMATION

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TM-9-2330-326-14-P Semitrailer Tactical Drop Deck BreakBulk/Container Transporter 22-1/2 TON M871A3NSN 2330-01-458-6865 Manual

Troubleshooting Information

TM 9-2330-326-14&P

H-27.

BRAKE DRUM SERVICE INFORMATION (Cont.)

4. Replacement Procedures

Cleanliness is most important. After removing the brake drum to be replaced, make sure all

mounting surfaces on the spoke wheel or hub are clean. All foreign material should be removed

to insure proper attachment of the brake drum.

Step 1. Assemble the brake drum to the hub.

NOTE

Hubs using an outboard mount drum do not have to be

removed from the axle to facilitate brake drum replacement.

It is suggested, however, that the torque on the spindle nut be

checked to make sure it is correct.

Step 2. Make sure the brakes are fully released and adjusters are fully backed off.

Step 3. Place the assembly on the axle and adjust the bearings.

Step 4. Inspect the lining location on the brake surface.

Step 5. Adjust the brakes.

NOTE

All adjustments should be made when brake drums are cold

with brakes fully released.

Standard Slack Adjusters --Raise the axle until the wheel can be turned freely. If

the slack adjuster has a positive lock mechanism, depress the locking sleeve to

disengage it. Turn the adjusting screw until the brakes begin to drag, and then

back off the adjustment so that the wheel turns freely. When adjustment is

completed, the adjusting screw nut should be positioned so the locking sleeve

engages the adjusting nut screw. In the case of the ball indent type, the ball should

engage the indent on the plunger shaft.

Automatic Slack Adjusters --Require initial manual adjustment. Consult the

manufacturer's literature for adjustment procedure.

H-72