Skyjack SJ46 AJ+ Service Manual

188
229042ABA SJ46 AJ+, SJ46 AJ, SJ51 AJ
Section 4 – Troubleshooting Information Hydraulic System
4.5-19 No Platform Rotation Left - CE & AS
1. Stuck or defective platform rotate enable valve
2H-36A.
Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
2. Plugged or defective orifice OR1. Check orifice. Replace if plugged or defective.
3. Stuck or defective differential pressure sensing
valve DSV5.
Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
4. Stuck or defective check valve CV12. Clean valve. Check operation of valve. Repair or
replace valve as required.
5. Stuck or defective platform rotate right valve 4H-
36.
Clean valve. Check operation of valve. Repair or
replace valve as required.
6. Stuck or defective counterbalance valve CB15. Clean valve. Check O-rings on valve. Repair or
replace valve as required.
7. Defective rotary actuator RA1. Check actuator. Repair or replace as necessary.
4.5-20 Platform will not Level Down Manually
1. Plugged, incorrectly adjusted or defective orifice
OR4.
Check orifice. Replace if plugged or defective.
2. Stuck or defective platform level down valve 4H-
40.
Clean valve. Check operation of valve. Repair or
replace valve as required.
3. Stuck or defective shuttle valve SV7. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
4. Stuck or defective shuttle valve SV8. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
5. Stuck or defective check valve CV4. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
6. Stuck or defective relief valve RV9. Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
7. Stuck or defective counterbalance valve CB8. Clean valve. Check O-rings on valve. Repair or
replace valve as required.
8. Stuck or defective check valve CV9. Clean valve. Check operation of valve. Repair or
replace valve as required.
9. Defective leveling cylinder C4 or slave cylinder
C5.
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
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Skyjack SJ46 AJ+ Specifications

General

Brand	Skyjack
Model	SJ46 AJ+
Category	Boom Lifts
Language	English