TM-9-2330-335-14-P

SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)

SEPTEMBER 2008

TM-9-2330-335-14-P - Page 543 of 640

0096-1

TM 9-2330-335-14&P

0096

FIELD AND SUSTAINMENT MAINTENANCE

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SEALED BRAKE INSTALLATION AND DISARMING

General Safety Precautions, Mechanical Release of Spring Brake (Gold Seal),

Combination Spring Brake Installation Instructions,

Disarming Introduction, Disarming Instructions, Supplementary Information

GENERAL SAFETY PRECAUTIONS

00096

WARNING

•

A spring brake contains a very powerful compression spring. Failure to comply with all of the

following instructions may result in forceful release of the piggyback or spring chamber and its

contents which could cause death, severe personal injury and/or property damage.

•

ALWAYS BLOCK WHEELS to prevent vehicle roll-away when performing any

brake maintenance.

1.

If spring brake shows structural damage, DO NOT cage the spring and DO NOT attempt to service it. Replace

the complete unit. To prevent severe personal injury when removing an uncaged spring brake from a vehicle, cut

the service push rod making sure to relieve all force on it. After cutting the push rod, remove the spring brake

from the vehicle, then disarm the spring brake using a suitable safety chamber (see

Disarming Introduction

and

Disarming Instructions

in this work package).

2.

Never strike any part of the spring brake with a hammer or any other heavy object; structural damage may result.

3.

Do not drop spring brake, as compression spring may forcefully release.

4.

If air pressure is used to aid in the caging process, do not tighten the release tool more than finger tight. The air pressure

must always be exhausted after the spring has been mechanically caged prior to disassembly.

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