Section IV. PARKING

TM 10-3930-630-34

(2) Secure master cylinder in a bench vise.

9-12. Master Cylinder, Reassembly and Installation

(3) Using honing equipment, remove material

a. Reassembly. Refer to figure 9-3 and reassemble

from cylinder bore in single passes.

the master cylinder as follows:

(4) After each pass is completed, remove hone

(1) Lubricate parts and cylinder bore with clean

and inspect for scratches and pitting. Remove only

brake fluid.

enough material to recondition cylinder bore. Do not

(2) Secure cylinder body (15, fig. 9-3) in vise and

hone cylinder oversize.

replace gasket (14) and filler cap (13).

NOTE

(3) Install outlet fitting (11), gaskets (10 and 12)

If the master cylinder has been

and fitting bolt (9) into cylinder body.

honed oversize or greater than 1.007

(4) Carefully install spring (7), valve assembly

inch (25.5 mm) it must be replaced.

(8), piston cup (6), piston (5) and stop plate (4).

d. Check to be certain intake and by-pass ports are

NOTE

open.

Largest end of piston spring and

e. Inspect all other parts for corrosion, scratched or

pressure valve must be toward outlet

pitted piston bearing surfaces, rubber deterioration and

end of cylinder.

spring action. Replace all damaged or worn parts.

(5) Insert lock wire (3) making certain it is seated

f. If cylinder has been honed, replace all parts

firmly in groove provided in end of cylinder.

contained in repair kit.

(6) Install rubber boot (2) and push rod (1).

b. Installation. Refer to TM 10-3930-630-12 and

install the master cylinder.

Section IV. PARKING

b. Check brake shoes (6) for worn pawl holes, lever

9-13. Description

contact areas or wear pads. Replace if necessary.

a. The parking brake is a dual shoe mechanical

c. Always replace shoe return springs (4) during

brake, mounted at the drive shaft.

reassembly.

b. The brake mechanism requires no lubrication

d. Inspect parking brake drum (3) for wear and out-

except at reassembly.

of-round condition. Machine drum if possible.

9-14. Parking Brake, Removal and Disassembly

9-16. Parking Brake, Reassembly and Installation

a. Refer to TM 10-3930-630-12 and disconnect the

a. The parking brake is reassembled during the

drive shaft from the parking brake drum and to

installation procedure. Install the parking brake in

disconnect parking brake linkage.

reverse numerical sequence as illustrated in figure 9-4.

b. The parking brake is disassembled during the

b. Refer to TM 10-3930-630-12 to connect the drive

removal procedure. Remove the parking brake in

shaft and the parking brake linkage.

numerical sequence as illustrated in figure 9-4.

9-17. Parking Brake, Adjustment

9-15.

Parking Brake, Cleaning, Inspection and

Refer to TM 10-3930-630-12 and adjust the parking

Repair

brake.

a. Check backing plate (10, fig. 9-4) for distortion,

loose or sheared rivets and worn pawls. Replace all

worn or damaged parts.

9-4