TM-9-2320-273-10

TRUCK, TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; OPERATOR’S MANUAL

DECEMBER 2012

TM-9-2320-273-10 - Page 262 of 452

MANUALLY COMPRESSING SPRING BRAKE POWER SPRING

1. Remove nut (Figure 1, Item 3), washer (Figure 1, Item 2), and release stud

(Figure 1, Item 1) from stowage pocket (Figure 1, Item 7) of failed spring

chamber (Figure 1, Item 6).

2. Remove dust cover (Figure 1, Item 4) from spring chamber (Figure 1, Item 6).

3. Insert cross-pin end of release stud (Figure 1, Item 1) into opening under dust

cover (Figure 1, Item 4) on spring chamber (Figure 1, Item 6).

4. After release stud (Figure 1, Item 1) has been inserted far enough to engage

pressure plate (Figure 1, Item 5), turn release stud (Figure 1, Item 1) ¼ turn to

lock cross-pin end of release stud (Figure 1, Item 1) into pressure plate

(Figure 1, Item 5).

5. Install washer (Figure 1, Item 2) and nut (Figure 1, Item 3) on release stud

(Figure 1, Item 1).

NOTE

Chock wheels to prevent vehicle from moving before brakes

are released. Failure to comply may result in serious injury

or death to personnel. Seek medical attention in the event of

an injury.

Observe that push rod retracts while tightening nut. This

indicates pressure plate has been properly engaged.

6. Tighten nut (Figure 1, Item 3) until 2.5–2.75 in. (6.4–7 cm) of release stud

(Figure 1, Item 1) remains visible above nut (Figure 1, Item 3). Spring brake is

then fully engaged.

END OF TASK

Figure 1. Spring Brake Power Spring.

1

2

3

4

5

6

7

1

2

3

TM 9-2320-273-10

0020

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