5
TROUBLESHOOTING
Troubleshooting should be performed by a trained and competent technician. Landoll Corporation is
not responsible for equipment that is improperly maintained. Contact an authorized Landoll Service cen-
ter or the Landoll factory for servicing.
5-1 ELECTRICAL
Most electrical system problems show up as a burned out light or fuse, or inoperative electrical
component. Wiring, grounds, or components may be at fault. Locate the symptom in this section that
best identifies your electrical problem. Check out each possible problem under that symptom. If the
problem cannot be located, see an automotive electrical specialist. For maintenance procedures see
Section 4-5.
SYMPTOM
PROBLEM: REMEDY
NO LIGHTS
Fuse blown:
replace fuse.
Connection at plug-in:
tighten connection.
Broken or corroded wires:
replace wire.
Ground wire loose:
clean and tighten ground.
LIGHTS FLICKERING
Wires shorted or loose:
locate, insulate, replace, or tighten.
Grounding through fifth wheel:
locate broken ground wire
(tractor or semitrailer).
LIGHTS DIM
Voltage difference between semitrailer & tractor:
match
bulbs with tractor voltage.
Grounding through fifth wheel:
locate broken ground wire
(tractor or semitrailer).
LIGHTS BRIGHT & BURN OUT
Voltage difference between semitrailer & tractor:
match
bulbs with tractor voltage.
FUSE BLOW-OUT OR CIRCUIT
BREAKER TRIPPING
Vibration:
locate source of vibration and repair.
Short circuit:
replace fuse and try all accessories. If fuse
blows right away, locate short and repair.
LAMP BULB BURN OUT
Vibration:
locate source of vibration and repair.
Short circuit:
replace fuse and try all accessories. If fuse
blows right away, locate short and repair.
Loose connection:
check lamp sockets and ground connec-
tions.
Intermittent short:
locate short and repair.
Improper voltage:
check voltage regulator output.
5-1
Summary of Contents for 600B Series
Page 8: ......
Page 12: ......
Page 14: ...3 2 Figure 3 1 Front Trailer Terminology Figure 3 2 Rear Trailer Terminology...
Page 18: ...3 6 Figure 3 4 Hydraulic Controls...
Page 26: ...3 14 Figure 3 7 Steps for Loading and Unloading...
Page 32: ...3 20 Figure 3 10 Dock Leveler Operation...
Page 38: ...3 26 Figure 3 14 Rear Impact Guard and Antilock Brake System...
Page 42: ...4 2 Figure 4 1 Lubrication Points...
Page 48: ...4 8 Figure 4 3 600B Wiring Diagram...
Page 49: ...4 9 Figure 4 4 Remote Wiring Diagram...
Page 52: ...4 12 Figure 4 5 Tandem Axle Air Ride Suspension System Figure 4 6 Air Ride Height Adjustment...
Page 54: ...4 14 Figure 4 7 Triple Axle Air Ride Suspension System...
Page 57: ...4 17 Figure 4 9 Checking Axle Alignment Figure 4 10 Examples of Camber...
Page 61: ...4 21 Figure 4 13 Axle and Brake Assembly...
Page 71: ...4 31 Figure 4 21 Dock Leveler Leg Assembly...
Page 73: ...4 33 Figure 4 22 Crank Landing Gear Assembly...
Page 84: ...NOTES 5 10...