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 156 of 894

TRUCK SERVICE MANUAL

REMOVE

1.

Disconnect air lines from quick release valve.

2. Remove mounting bolts and valve.

INSTALL

1. Mount quick release valve with mounting bolts

and lock washers with its exhaust port pointing

down.

2. Connect brake valve to top port and brake

chamber lines to side ports.

3. Make sure exhaust port is not restricted.

4. After the new or rebuilt valve is installed, perform

tests as outlined under SERVICE CHECKS.

Fig. 2.

Sectional View of Quick Release valve

DISASSEMBLY

1. Remove four screws.

2. Remove spring and spring seat if so equipped.

3. Remove diaphragm.

4. Remove cover O-ring.

CLEANING AND INSPECTION

1. Clean all parts in good cleaning solvent.

2. Inspect diaphragm, especially the

lower

part that

contacts the exhaust seat and cover O-ring, for

wear or deterioration.

Replace if necessary.

3. Check the cover exhaust seat for pitting or nicks.

This seat should be smooth and sharp.

If not,

use a fine piece of emery cloth to dress the seat.

4. Check the spring and spring seat(if valve so

equipped) for wear or corrosion.

5. Clean or replace as necessary.

REASSEMBLY

1. If valve is equipped with spring and spring seat,

position spring in body.

2. Position diaphragm over spring seat.

3. Place O-ring in groove.

4. Assemble cover and body.

5. Install four screws and tighten evenly.

154

BRAKES-AIR