BENDIX E-6 Manual - Página 3

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pressure on the delivery side of the primary piston equals

the effort exerted by the driver's foot on the treadle. A

balanced position in the secondary portion is reached when

air pressure on the secondary side of the relay piston closely

approaches the air pressure on the primary side of the relay

piston.

When the brake treadle is fully depressed, both the primary

and secondary inlet valves remain open and full reservoir

pressure is delivered to the actuators.

RELEASING: PRIMARY CIRCUIT

With the brake treadle released, mechanical force is

removed from the spring seat, graduating spring, and

primary piston. Air pressure and spring load moves the

primary piston, opening the primary exhaust valve, allowing

air pressure in the primary delivery line to exhaust out the

exhaust port.

RELEASING: SECONDARY CIRCUIT

With the brake treadle released, air is exhausted from the

primary circuit side of the relay piston. Air pressure and

spring load move the relay piston, opening the secondary

exhaust valve allowing air pressure in the secondary

delivery line to exhaust out the exhaust port.

SLACK

ADJUSTER

GOVERNOR

FIGURE 5 - TYPICAL PIPING SCHEMATIC

MV-3

™

DASH

CONTROL

MODULE

TRAILER

CONTROL

VALVE

BRAKE

CHAMBER

(E-6

™

OR E-10

™

)

DUAL BRAKE

VALVE

AIR DRYER

SUPPLY

RESERVOIR

(WET TANK)

COMPRESSOR

PREVENTIVE MAINTENANCE

Important: Review the Bendix Warranty Policy before per-

forming any intrusive maintenance procedures. A warranty

may be voided if intrusive maintenance is performed during

the warranty period.

No two vehicles operate under identical conditions, as a

result, maintenance intervals may vary. Experience is a valu-

able guide in determining the best maintenance interval for air

brake system components. At a minimum, the E-6

valves should be inspected every 6 months or 1500 operat-

ing hours, whichever comes first, for proper operation. Should

™

the E-6

/E-10

valves not meet the elements of the opera-

tional tests noted in this document, further investigation and

service of the valve may be required.

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:

Clean any accumulated dirt, gravel, or foreign material away

from the heel of the treadle, plunger boot, and mounting

plate.

Lubricate the treadle roller, roller pin, and hinge pin, with

Barium grease per BW-204-M (Bendix part 246671).

Check the rubber plunger boot for cracks, holes or deterio-

ration and replace if necessary. Also, check mounting plate

and treadle for integrity.

Apply a thin layer of Barium grease, per BW-204-M (Bendix

part 246671), between plunger and mounting plate – do not

over oil!

™

TP-5

TRACTOR

PROTECTION VALVE

DOUBLE

CHECK

VALVE

#1 SERVICE

#2 SERVICE

RESERVOIR

SLACK

SPRING

ADJUSTER

BRAKES

QUICK

RELEASE

VALVE

BP-R1

BOBTAIL

PROPORTIONING

VALVE

™

/E-10

™