BENDIX LQ-2 QUICK RELEASE VALVES Manual

®
® ™
Bendix LQ-2 Limiting & Quick Release Valve and TW-1
SUPPLY PORT
(FROM BRAKE VALVE)
CUT-OUT VALVE
PORT
(FROM
TWO-WAY
VALVE)
EXHAUST
PORT
LQ-2
FIGURE 1
INLET
VALVE
STEM
GASKET
FIGURE 2
DESCRIPTION
™
LQ-2 LIMITING & QUICK RELEASE VALVE
The Bendix ® LQ-2 ™ limiting and quick release valve is a dual
function valve; the valve serves to limit brake applications
and is generally used on the front or steering axle of a vehicle.
DELIVERY PORT
(TO BRAKE CHAMBER)
™ LIMITING & QUICK
RELEASE VALVE
PISTON
O-RINGS(2)
DELIVERY PORT (TO
LIMITING AND QUICK
RELEASE VALVE)
INLET PORT
(FROM BRAKE
VALVE)
PLUNGER RETURN
SPRING
SPRING
GUIDE
EXHAUST
INLET VALVE
VALVE
SPRING
COVER
SEAL RING
The LQ-2 ™ valve is controlled by a TW-1
Figure 2) which is mounted in the vehicle cab within reach of
the driver. Placing the control valve in the "Slippery Road"
position will reduce front axle service application pressure
by 50%. With the control valve in the "Dry Road" position,
there is no reduction of service application pressure. In
™
addition, the LQ-2
releasing air directly from the front axle chambers.
™
Control Valve
™
TW-1 CONTROL VALVE
LEVER
DIAL
EXHAUST
PORT
PLUNGER
INLET & EXHAUST
VALVE
™ control valve, (see
valve serves a quick release function,
1