BENDIX MV-2 CONTROL MODULE Manual
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®
®
™
Bendix
MV-2
Control Module
RED
1
YELLOW
FIGURE 1
DESCRIPTION
®
™
The Bendix
MV-2
control module is an integrated control
assembly designed for control panel mounting in a
truck-tractor. The bodies for the module, as well as "spool"
inserts, are molded of a nonmetallic, noncorrosive material.
The assembly consists of two push-pull valves and a dual
circuit supply valve which triggers at a preset pressure
differential. The valve "spool" inserts, as well as the dual
circuit supply valve spool and shuttle, may be removed from
the valve bodies without disconnecting the air lines.
The MV-2
™
module provides all the functions of a standard
three valve combination plus supply reservoir source
selection:
1. Tractor protection control
2. Trailer service air supply
3. System park
4. Trailer park only
5. Trailer charge with tractor spring brakes applied (tractor
park only)
6. Supply reservoir selection
COVER (1)
5
FIGURE 2
The MV-2
™
module includes a spring loaded dual circuit
supply valve which selects, as the air source for both control
valves, the No. 1 reservoir at all times unless the pressure in
the No. 1 reservoir falls not more than 30 P.S.I. below that of
the No. 2 reservoir, when the dual circuit supply valve will
shuttle and establish the No. 2 reservoir as the supply. An
auxiliary air delivery port is also available which receives its
supply from the dual circuit supply valve. All air connections
are at the bottom of the valve, as shown on Figure 3, including
the auxiliary air delivery port.
EXHAUST
TP-3
™
TRACTOR
PROTECTION
VALVE
DELIVERY - TRAILER
FIGURE 3
2
3
4
9
SB-3
DELIVERY - TRACTOR
AUXILIARY AIR
DELIVERY
RESERVOIR #2
RESERVOIR #2
SUPPLY
RESERVOIR #1
SUPPLY
PORT DESIGNATIONS
RESERVOIR #1
MV-2
™
MODULE
7
8
6
CONTROL
1