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SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
Section 4 – Troubleshooting Information
Electrical System
2.
Loose or broken wire 217 from SW3 pin 1 to 31 pin
chassis harness connector J31 pin 11
Check continuity. Replace if defective.
3.
Loose or broken wire 217 from connector P31 pin
11 to Crab Steer solenoid connector J19 pin 1
Check continuity. Replace if defective.
4.
Loose or broken 00 wire from Crab Steer solenoid
connector J19 pin 2 to ground.
Check continuity. Replace if defective.
5.
Defective Crab Steer solenoid
Replace if Defective
4.2-14 No Boom Up
With following conditions:
▪
Frame Level Operates Normally
1.
Loose or broken 05A wire from fuse F3 to 31 pin
Chassis harness connector J31 pin 17, and/or
boom up end of stroke relay 19CR pin 30.
Check continuity. Replace if defective.
2.
Loose or broken 05A wire from connector P31
pin 17 to Boom End Of Stroke proximity switch
connector J23 pin 1
Check continuity. Replace if defective.
3.
Loose or broken 00 wire from Boom E.O.S.
proximity switch connector J23 pin 3 to ground
Check continuity. Replace if defective.
4.
Boom E.O.S. proximity switch misadjusted or
defective.
Check adjustment (set to 70°) , replace if defective
5.
Loose or broken 19 wire from Boom E.O.S.
proximity switch connector J23 pin 2 to connector
P31 pin 18
Check continuity. Replace if defective.
6.
Loose or broken 19 wire from connector P31 pin
18 to Boom E.O.S. relay 19CR pin 86
Check continuity. Replace if defective.
7.
Loose or broken 00 wire from Boom E.O.S. relay
19CR pin 85 to ground
Check continuity. Replace if defective.
8.
Defective relay 19CR.
Check continuity through contacts of relay (pin 30
to 87 with coil energized). Replace if defective.
9.
Loose or broken 14 wire from Boom E.O.S. relay
19CR pin 87 to boom up enable relay 28CR pin 30.
Check continuity. Replace if defective.
10.
Loose or broken 14 wire from connector P31 pin
18 to boom up enable relay 28CR pin 30.
Check continuity. Replace if defective.
11.
Frame angle sensor defective.
With boom below 40° and frame level check for
voltage on wire 28 (pin 5). Replace if defective
12.
Loose or broken wire 28 from frame angle sensor
pin 5 to 4 pin connector P113 pin 2.
Check continuity. Replace if defective
13.
Loose or broken wire 28 from 4 pin connector J113
pin 2 to boom up enable relay 28CR pin 86
Check continuity. Replace if defective
Содержание SJ1044 TH
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Страница 25: ...25 SJ1044 TH SJ1044 THS SJ1056 TH SJ1056 THS SJ1256 THS 230790ABA Section 2 Maintenance Tables...
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