Skyjack SJ46 AJ+ Service Manual

186
229042ABA SJ46 AJ+, SJ46 AJ, SJ51 AJ
Section 4 – Troubleshooting Information Hydraulic System
4.5-15 No Jib Down - CE & AS
1. Stuck or defective jib enable valve 2H-34A. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
2. Plugged or defective orifice OR2. 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 jib down valve 4H-34. Clean valve. Check operation of valve. Repair or
replace valve as required.
6. Stuck or defective counterbalance valve CB13. Clean valve. Check O-rings on valve. Repair or
replace valve as required.
7. Defective jib cylinder C1. Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
4.5-16 No Platform Rotation Right - ANSI/CSA
1. Stuck or defective platform rotate enable valve
2H-42.
Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
2. 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.
3. Stuck or defective check valve CV12. Clean valve. Check operation of valve. Repair or
replace valve as required.
4. Stuck or defective platform rotate right valve 4H-
37.
Clean valve. Check operation of valve. Repair or
replace valve as required.
5. Stuck or defective counterbalance valve CB14. Clean valve. Check O-rings on valve. Repair or
replace valve as required.
6. Defective rotary actuator RA1. Check actuator. Repair or replace as necessary.
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Skyjack SJ46 AJ+ Specifications

General

Brand	Skyjack
Model	SJ46 AJ+
Category	Boom Lifts
Language	English