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 150 of 894

TRUCK SERVICE MANUAL

BREAKS-AIR

INSTALL

1. Block and hold vehicle by means other than air

brakes.

2. Drain air system.

3. To prevent early plugging of the filter, thoroughly

flush and clean reservoir before installing drain

valve.

4. Aerate any tank thoroughly if any solvents have

been used in the cleaning process.

NOTE:

When installing the automatic reservoir

drain valve equipped with a heater and thermostat,

first determine if the vehicle electrical system is

12volt or 24volt and that the heater/thermostat unit

is of the same voltage. The #14 gauge lead wire on

the valve should be connected to the "on" position

of the engine control or ignition switch.

Use an

8amp fuse for one valve, a 15amp fuse for two

valves and a 20amp fuse for three valves.

All

electrical connections must be waterproof.

DISASSEMBLY

Refer to Fig.

13 for disassembly of valve and

proceed as follows:

1. Remove 4 capscrews and lockwashers.

2. Remove cover and sealing ring.

NOTE:

If the heater or thermostat has failed, the

entire cover must be replaced.

Do not remove the

thermostat cover plate.

It is moisture sealed and

removal could result in early thermostat failure.

3. Remove valve guide.

4. Remove inlet and exhaust valve.

5. Remove adapter and filter assembly.

6. Remove filter retainer.

7. Remove filter.

CLEANING AND INSPECTION

1. Cleaning solvent may be used on metal parts.

2. Rubber parts should be wiped clean.

3. Inspect all parts for wear or deterioration.

4. Clean and inspect filter and replace if clogged.