5-7 REMOTE CONTROL
SYMPTOM
PROBLEM: REMEDY
DOES NOT FUNCTION
No power:
Check center pin of 7-way connector with voltmeter
(+12VDC). Correct wiring per Tractor Repair manual.
Check remote plugged in:
Self-explanatory.
No current to solenoid:
Check wire harness connection to
tractor.
No air supply to solenoid:
Check hydraulics connections.
5-8 DOCK LEVELER HYDRAULICS
SYMPTOM
PROBLEM: REMEDY
FAILS TO LIFT SEMITRAILER
Insufficient hydraulic supply pressure:
adjust relief valve for
2400-2500 psi.
Worn hydraulic pump:
service or replace.
Insufficient volume to dock level circuit:
adjust flow divider
to provide 2.5 to 3.1 GPM.
Too heavy a load:
reduce load on cylinders.
LOWERS UNEVENLY OR
ERRATICALLY
Insufficient volume to dock level circuit:
clean system and
new oil and filter.
Dirty oil in check valves:
use same procedure as above.
5-9
Summary of Contents for 317B
Page 3: ...MODELS 317B 318 319 TRAILER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO...
Page 8: ......
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 24: ...3 12 Figure 3 5 Steps for Loading and Unloading...
Page 30: ...3 18 Figure 3 10 Dock Leveler Operation...
Page 34: ...3 22 Figure 3 12 Front Extension Bulkhead...
Page 36: ...3 24 Figure 3 13 Rear Impact Guard and Antilock Brake System...
Page 40: ...4 2 Figure 4 1 Lubrication Points...
Page 45: ...4 7 Figure 4 2 317B 318 319 Wiring Diagram...
Page 46: ...4 8 Figure 4 3 Remote Wiring Diagram...
Page 52: ...4 14 Figure 4 6 Checking Axle Alignment CURBSIDE DRIVER SIDE Figure 4 7 Examples of Camber...
Page 56: ...4 18 Figure 4 10 Axle and Brake Assembly...
Page 62: ...4 24 Figure 4 13 Inboard Mount Hub and Drum Figure 4 14 Three Spoke Wheel and Drum...
Page 66: ...4 28 Figure 4 18 Mounting Tires and Wheels Figure 4 19 Stud Tightening Sequence...
Page 69: ...4 31 Figure 4 20 Dock Leveler Leg Assembly...
Page 80: ...5 10 NOTES...