INSTALLATION - TM-10-3930-644-14-P0322

TM 10-3930-644-14&P

12. Inspect cylinder bore. Deep blemishes require

7. Ensure that cylinder is completely reassembled

reboring to resurface the cylinder wall. Pressure

prior to installing

marks and discoloration may be polished out

with crocus cloth. (Do not use emery cloth or

8. Replace master cylinder in its relative mounting

sandpaper.) Make certain Intake and bypass

location and install securing capscrews.

ports are open. Bypass port may be probed with

soft iron wire. Follow the honing equipment

9. Attach brake pedal push rod to cylinder and

manufacturers recommendations for honing.

secure with clevis pin previously removed.

Care must be exercised cot to go beyond

tolerances for cylinder size. A cylinder honed

10. Connect brake hydraulic line to cylinder.

oversize must be discarded.

11. Refer to LUBRICATION CHART and fill cylinder

13. Before assembly, inspect parts for corrosion,

with proper high grade hydraulic brake fluid.

scratched or pitted piston bearing surfaces,

rubber

deterioration

(swelling,

softening,

12. Bleed brake system as outlined

under

tackiness, etc. ) and spring action. If cylinder

appropriate heading, this Section.

has been honed, replace all parts contained in

repair kit. Replace all other parts which appear

13. Replace floor and toe plate.

worn or damaged.

D. PEDAL LINKAGE

14. Lubricate parts and cylinder bore with clean

brake fluid and assemble m direct opposite

If pedal linkage does not provide proper clearance or

sequence of disassembly procedure.

lash between master cylinder piston and linkage with

brakes released. piston cannot return to full off position.

Brakes will drag after several applications if bypass port

CAUTION

is blocked. Refer to Figure 8 and proceed as follows:

Make certain lock ring is firmly

seated a groove provided in end of

1. Loosen locknut at master cylinder.

cylinder.

Largest end of piston spring and pressure valve

2. Adjust linkage to provide 1/2" of free play

must be toward outlet end of cylinder.

measured at brake pedal. More free play will

reduce usable stroke of master cylinder piston.

C. INSTALLATION

3. Tighten locknut.

1. Secure the cylinder body in a vise, exercising

care so as not to distort the cylinder unit or crack

casting.

2. Replace filler cap,

washers

and

fittings

previously removed.

3. Refer to Figure 6, and replace brake line fitting,

copper washers, and outlet fitting bolt.

4. Carefully replace spring and seat, rubber, piston

and copper washer.

CAUTION

This assembly must be held in

position until lockring is properly

Figure 8. Adjusting Pedal Lash

inserted to retain parts.

5. Insert lockring and ensure Its proper seating.

6. Replace rubber boot and push rod.

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