Dual Brake Application Valve (E-8P); Brake Pedal Adjustment; Maintenance; Stoplight Switches - PREVOST H3-41 Maintenance Manual

13.4

DUAL BRAKE APPLICATION VALVE (E-8P)

The E-8P dual brake valve is a floor mounted, foot-operated type brake
valve with two separate supply and delivery circuits. This valve is located in
the front service compartment.
13.4.1

Brake Pedal Adjustment

After brake pedal replacement or repair, adjust the pedal to its proper
position according to the following procedure:
1. Replace the linkage, loosen threaded rod lock nut and screw or
unscrew the threaded adjustment rod in order to obtain a 45
pedal inclination.
2. Tighten threaded rod lock nut.
13.4.2

Maintenance

Maintenance and repair information on the E-8P dual brake application
valve is supplied in the applicable booklet, found on your Technical
Publications USB flash drive, under reference number Bendix SD-03-830.
13.5

STOPLIGHT SWITCHES

Two Electro-pneumatic stoplight switches are mounted on the dual brake
application valve (E-8P). The upper one is used for the primary air circuit
while the lower one is used for the secondary air circuit. Both switches are
connected in parallel and have the same purpose, i.e. completing the
electrical circuit and lighting the stoplights when a brake application is
made.
13.6

PARKING BRAKE ALARM SWITCH

Refer to the appropriate booklet (Bendix, SL-5 Stop Light Switch; reference
no. SD-06-1804), found on your Technical Publications USB flash drive.
The parking brake alarm uses the same switch as the stoplights. It is
mounted on the spring brake valve and operates in conjunction with a NC
relay to sound a warning alarm by completing the electrical circuit when the
ignition key is turned OFF with parking brake released.
SECTION 12: BRAKE AND AIR SYSTEM
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PA1621 Maintenance Manual All Series | Revised June 2020
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