Landoll 317B, Operator'S Manual

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3-17 AIR RIDE OPERATION
3-17.1 Trailer air pressure must be maintained
above 65 PSI before operating. This enables
the ‘PROTECTION VALVE" to maintain safe
air brake pressure during suspension system
air loss.
CAUTION
IF SUSPENSION AIR LOSS SHOULD
OCCUR, COMPLETELY DEFLATE SUS-
PENSION AND TEMPORARILY OPER-
ATE ON THE AIR SPRINGS INTERNAL
RUBBER BUMPERS. CAREFULLY
PROCEED TO THE NEAREST SEMI-
TRAILER SERVICE FACILITY. TO DE-
FLATE THE AIR SUSPENSION, DIS-
CONNECT THE LOWER CONNECTION
ON THE LINKAGE OF THE AUTOMATIC
AIR VALVES. ROTATE THE VALVE
CONTROL ARMS DOWN ABOUT 45
o
TO EXHAUST THE AIR. TO RESTORE
TO NORMAL OPERATION, SIMPLY RE-
VERSE THE PROCEDURE.
3-18 FRONT EXTENSION/BULKHEADS
3-18.1 Optional bulkheads may come with or
without chain racks. To remove a bulkhead,
simply remove the support pins holding the
bulkhead into the pockets on the semitrailer
front and lift the bulkhead off.
3-18.2 To use the front extension as an exten-
sion, remove the front-most pin from the
bracket. Lower the extension to a horizontal
position. Replace the front-most pin in its
new position. To use the extension as a
bulkhead, simply return the extension to its
original position. (See Figure 3-12)
3-18.3 In all cases, be sure to secure the sup-
port pins with the pins provided.
3-23