BENDIX E-5 BRAKE VALVE Manual - Página 2

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PREVENTIVE MAINTENANCE

Important: Review the warranty policy before performing

any intrusive maintenance procedures. An extended warranty

may be voided if intrusive maintenance is performed during

this period.

Because no two vehicles operate under identical conditions,

maintenance and maintenance intervals will vary. Experience

is a valuable guide in determining the best maintenance

interval for any one particular operation.

Visually check for physical damage to the brake valve such

as broken air lines and broken or missing parts.

Every 3 Months, 25,000 Miles or 900 Operating Hours

Lubricate all pedal actuation parts with light (10W) oil. Check

free pedal travel. If necessary, adjust stop button so that

roller just contacts plunger.

SERVICE TESTS

Operating Test

NOTE: IMPORTANT!!! Tests should be conducted with an

accurate test gauge.

Install gauge in a delivery port or line; depress the treadle or

pedal to several positions between fully released and fully

applied positions, checking the delivery pressure on the

gauge to see that it varies proportionately with the movement

of the treadle or pedal. In the fully applied position, the

reading on the gauge should be approximately that of full

reservoir pressure. Upon release of the application, the

reading of the test gauge should fall to zero psi immediately.

Leakage Test

With 100 psi supply pressure and valve in released position,

coat exhaust port with soapsuds and check for leakage.

NO leakage permitted.

Fully apply valve and hold application. Coat exhaust port

with soapsuds. NO leakage permitted. Coat area around

plunger and valve body with soapsuds. NO leakage

permitted.

If the valve does not function as described or leakage is

excessive, it is recommended that it be replaced with a new

or remanufactured unit, or repaired with genuine Bendix

parts available at Bendix outlets.

REMOVING AND INSTALLING

Removing

Block and hold vehicle by means other than air brakes. Drain

air brake system.

For complete valve removal - disconnect all air lines in

the cab and at the firewall from the brake valve. Remove

mounting nuts and cap screws; remove valve.

For removal of internal parts only - remove the pedal

and mounting plate assembly. Press up on the valve retainer

and release the locking tabs from the body (CAUTION: piston

is spring loaded); piston assembly, inlet valve seat, and the

inlet/exhaust valve assembly may now be removed from the

valve body.

Installing

Clean air lines to valve.

Install valve and tighten mounting nuts and cap screws.

Connect air lines to valve (plug any unused ports).

Test valve as outlined under "Service Tests."

DISASSEMBLY

Pedal and Mounting Plate

1. Remove cotter pin from fulcrum pin (1) and remove

fulcrum pin and pedal.

2. Remove cotter pin from roller pin (2), remove roller pin.

Remove pedal cover (3).

3. Remove mounting plate cap screws (4). Remove

mounting plate with plunger. Plunger, stop button, and

stop button lock nut may now be removed from mounting

plate.

Basic E-5

™

Brake Valve

4. Depress retainer (5) and release retainer tabs from body

grooves. Remove retainer. (CAUTION: Piston (6) is

loaded by return spring (7).)

5. Remove piston assembly (6) and piston return spring

(7).

6. Remove inlet seat (8). Remove o-rings from the inlet

seat.

7. Remove inlet/exhaust valve (9) and spring (10).

8. Remove o-ring (11) from piston assembly (6). Remove

cap screw, washer, spring seat, and rubber spring from

piston.

9. Remove inlet valve stem o-ring (12) and valve retainer

from inlet/exhaust valve assembly.

10. Remove exhaust check valve diaphragm (13).

Cleaning and Inspection

1. Wash all metal parts in mineral spirits and dry. Wipe all

rubber parts clean.

2. Inspect all parts for excessive wear or deterioration.

3. Inspect valve and valve seats for nicks and burrs.

4. Check springs for cracks, distortion or corrosion.

5. Inspect bore of body for scratches or out of round

condition. Replace as necessary.

6. Inspect all pedal parts and mounting plate for wear;

replace as necessary.