Skyjack SJ1044 TH - 17 RAS Remains Fully Locked (RAS Indicator Remains Illuminated)

117
SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
Electrical System Section 4 – Troubleshooting Information
20. Loose or broken wire 28B from P31 connector pin
30 to frame level left enable solenoid J73 pin 1
Check continuity. Replace if defective
21. Loose or broken wire 00 from frame level left
enable solenoid J73 pin 2 to ground
Check continuity. Replace if defective
22. Defective frame level right solenoid 2H-28B Replace if defective
4.2-17 RAS remains fully locked (RAS indicator remains illuminated)
With following conditions:
▪
Boom angle above 40°, park brake off, transmission in FWD, service brake not depressed.
▪
RAS goes into restrict mode (RAS indicator not illuminated) above 40° with park brake off, transmission in
REV.
1. Diode D16 open/defective.
Check for continuity with positive lead on J47
pin 1 and negative lead on J31 pin 22. Replace if
defective
With following conditions:
▪
Boom angle above 40°, park brake off, transmission in REV, service brake not depressed.
▪
RAS goes into restrict mode (RAS indicator not illuminated) above 40° with park brake off, transmission in
FWD.
2. Diode D15a open/defective.
Check for continuity with positive lead on J47
pin 7 and negative lead on J31 pin 22. Replace if
defective
With following conditions:
▪
Boom angle above 40°, park brake off, transmission in FWD or REV, and service brake not depressed.
1. Diode D16 and D15a open or defective, and/
or wire 16a loose or broken from shifter to J31
connector pin 22.
Check for continuity with positive lead on J47 pin
1 and/or pin 7 and negative lead on J31 pin 22.
Repair or replace as required if defective.
2. Loose or broken wire 16a from connector P31 pin
22 to PS3 brake pressure switch connector J105
pin 2.
Check continuity. Replace if defective
3. Brake pressure switch stuck in open position or
otherwise defective.
Check switch operation. Replace if defective
4. Loose or broken wire 220 from PS3 brake pressure
switch connector J105 pin 3 to connector P31 pin
21.
Check continuity. Replace if defective
5. Loose or broken wire 220 from connector J31 pin
21 to relay 220CR pin 86 and/or pin 87.
Check continuity. Replace if defective