TM-5-3805-254-14-P-2

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)

JUNE 1980

TM-5-3805-254-14-P-2 - Page 165 of 894

TRUCK SERVICE MANUAL

DISASSEMBLY

1. Press out lever or plunger roll pin.

2. If valve is of the push-pull type, loosen jam nut at

control button, then remove button and jam nut.

3. Remove plunger and plunger return spring from

body.

4. Unscrew cap nut at inlet port and remove valve

spring and valve from body.

5. Remove grommets from plunger and cap nut.

CLEANING AND INSPECTION

1. Wash all metal parts in cleaning solvent.

2. Check plungers for damage.

Hollow hole

plunger must be clean and free of all foreign

material.

3. Inspect small end (exhaust seat) of plunger

carefully; if chipped, worn or distorted,

replace.

4. Check plunger retainer spring and valve spring

for damage.

5. Valve body must be replaced if seat is worn

excessively or damaged.

ASSEMBLY

1. Install new grommet on plunger.

2. Apply a small amount of the lubricant listed in

LUBRICANT SPECIFICATIONS, Item 1, on the

plunger and insert plunger return spring and

plunger in the body.

Plunger must move freely

with only a slight drag due to grommet.

Depress

plunger and then release; plunger spring must

return plunger.

3. Apply a lubricant comparable to that listed in

LUBRICANT SPECIFICATIONS, Item 1, to cap

nut grommet and position grommet on cap nut.

4. Position valve and valve spring in valve body.

5. Install cap nut in valve body.

6. Position lever on top of plunger and align hole in

lever with hole in body.

7. Install lever pin and stake edge of hole.

8. Install jam nut and button on push-pull type

valve.

Install bracket on remote control (cable-

operated) type valve.

163

BRAKES-AIR