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 547 of 640

0096-5

TM 9-2330-335-14&P

0096

MECHANICAL RELEASE OF SPRING BRAKE (GOLD SEAL) - CONTINUED

WARNING

Step 7 only applies when spring brake is not pressurized. If air pressure is used to compress the

spring, do not tighten release tool more than finger tight. Torquing the release tool nut while the

spring brake is pressurized can cause pressure plate damage resulting in sudden release of the

spring which could cause death or severe personal injury. Air pressure must be released after

caging, prior to any disassembly.

7.

Turn release tool nut clockwise with hand wrench (DO NOT USE HIGH-SPEED AND/OR POWER-DRIVEN IMPACT

WRENCH) and make certain push rod is retracting (Figure 6).

Figure 6.

Sealed Brake.

096

CAUTION

•

Do not over-torque release tool assembly. Over-torquing release tool can cause pressure plate

damage. GOLD-SEAL S-Cam type 35 lb-ft (47 Nm) Maximum, clockwise.

•

To ensure the compression spring is fully caged, the release tool length (X dimension) (Figure 6)

should measure as shown in Table 1.

NOTE

If dimension of release tool (X dimension) length is less than the minimum measurement, brake

unit must be replaced.

Table 1.

Release Tool Length.

MODEL

STROKE

X - MINIMUM

2424

2-1/4 in.

2.915 in. (740 mm)

2424LS

2-1/2 in.

2.915 in. (740 mm)

2430

2-1/4 in.

2.915 in. (740 mm)

2430LS

2-1/2 in.

2.915 in. (740 mm)

2430XLS

3 in.

3.463 in. (880 mm)

3030

2-1/2 in.

2.915 in. (740 mm)

3030LS

3 in.

3.537 in. (898 mm)

3636

3 in.

3.602 in. (915 mm)

447-0223