BENDIX M-21-M-22 ANTILOCK MOD ASSY Manual de servicio descargar pdf (Pagina 11)

Stop Light Switch

The stop light switch (SL5) is an Electro-pneumatic switch and operates in conjunction

with the brake valve and stoplights by completing the stop light electrical circuit when

a brake application is made.

When a brake application is made, air pressure from the brake valve enters the cavity

below the diaphragm. At approximately 5 psi, the air pressure underneath the

diaphragm overcomes the force of the spring and moves the piston or plunger until

the contact points close, completing the stop light electrical circuit and lighting the

stop lights.

Front Brake Chambers

The front chamber is a 2430 series chamber. This is a single chamber with a stroke of

2.25-2.5 Inches. Several brake chamber types are available on an Ottawa.

Rear Brake Chambers

The rear chamber is a 3036 series chamber. This type is a combination or dual-

diaphragm brake chamber, commonly referred to as a Maxi brake. The stroke on this

chamber will be 2.25-2.5 inches. This spring brake is tamper-resistant and sealed at

the factory for your protection. This type utilizes an external breathing tube and end

cap.

NOTE: Do not dissemble the spring brake section. It contains a spring under

compression. Disassembly could result in injury or death.

Quick Release Valve

The function of a quick release valve is to rapidly exhaust air from the controlled

device (brake chambers) through the quick release valve. This valve is normally locat-

ed adjacent to the controlled device rather than require the exhaust air to return and

exhaust through the control valve. This decreases release time.

OPERATION: With no air pressure applied to the quick release valve, the valve’s

diaphragm is slightly flexed by the upper and lower body. In this condition, the

center portion of the diaphragm rests on the exhaust port in the lower body while

the outer edge and opposite side of the diaphragm rests against the sealing lip

of the upper body.

APPLY: Air entering the supply port of the valve causes the center portion of the

diaphragm to seal the exhaust port. Simultaneously, the outer edge of the

diaphragm moves away from the sealing lip of the upper body, allowing air to

flow from the supply port out the delivery ports.

Air Brake System

Revised 11/15/99

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 31 32

Sin comentarios

BENDIX M-21-M-22 ANTILOCK MOD ASSY Manual de servicio Pagina 11