Landoll 600B Series, Operator'S Manual

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3-5.6 Check tire inflation, adjust as needed to
the pressure listed on the semitrailer VIN
plate, located on the front of the semitrailer.
3-5.7 Check tractor/semitrailer rig for air leaks.
If air leakage is found, repair the defect be-
fore transporting.
3-5.8 Check the oil in each hub for proper
level and freedom from contamination. If
hubs are contaminated with water, dirt or
some other foreign material, clean before
transporting.
3-5.9 Check tractor air pressure. Pressure
must not fall below 90 psi, even after activat-
ing brakes a couple of times. Set parking
brake and carefully remove all wheel chocks.
Set emergency brake and try pulling forward.
The semitrailer wheels must not rotate. If
semitrailer brakes do not apply, DO NOT
transport until defect, or defects, are re-
paired.
3-6 TOWING THE SEMITRAILER
CAUTION
WHEN OPERATING SEMITRAILER, DO
NOT BACK OVER CURB. THIS WILL
CAUSE SEVERE DAMAGE TO UNDER-
CARRIAGE AND UNDERCARRIAGE
CYLINDER.
Driving the towing vehicle with the semitrailer
coupled behind requires constant attention to the
overall length of the combination. The “hinged-in-
the-middle” configuration of the tractor and semi-
trailer, load, and weight effect performance. Turn-
ing, passing, acceleration, braking, stopping, and
backup require special considerations. When exe-
cuting steep grades or turning tight curves, the
semitrailer must not be allowed to push the towing
vehicle, or jack knifing the semitrailer with the tow-
ing vehicle may result. Application of the semi-
trailer brakes to keep the semitrailer in tow will
help prevent this pushing. Braking should begin
before descending a hill or attempting a curve, to
assure control.
3-6.1 Make a moving test of the semitrailer
brakes at low, and medium speeds before
traveling at highway speed.
a. The Anti-Lock Brake System (ABS) warning
lamp mounted at left rear side of the semi-
trailer should come on when power is sup-
plied to the ABS by turning the tractor
keyswitch on. The warning lamp should go off
once the semitrailer exceeds 4 mph. If the
warning lamp does not go off, a fault exists in
the semitrailer ABS. Once the vehicle speed
exceeds 4 mph, the light should remain off
unless a fault occurs or the keyswitch is
turned off, then on again.
CAUTION
IF A FAULT EXISTS IN THE SEMI-
TRAILER ABS, NORMAL BRAKING
WILL OCCUR, BUT WHEELS MAY
LOCK. SERVICE THE ABS AS SOON
AS POSSIBLE.
3-7