Skyjack SJ85 AJ Service Manual

136
SJ85 AJ229044ADA
Section 4 – Troubleshooting Information Hydraulic System
4.3-10 No Steer
No Steer Right:
1. Stuck or defective proportional flow 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 steer right valve 5H-23A. Clean valve. Check operation of valve. Repair or
replace valve as required.
3. Stuck or defective check valve CV10. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
4. Stuck or defective pilot check valve CV3 and/or
CV4.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
5. Stuck or defective counterbalance valve CB6
and/or CB7.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
6. Defective steer cylinder C8. Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
No Steer Left:
1. Orifice OR1 plugged. Clean or replace orifice as required.
2. Stuck or defective steer right valve 5H-24A. Clean valve. Check operation of valve. Repair or
replace valve as required.
3. Stuck or defective check valve CV10. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
4. Stuck or defective pilot check valve CV3 and/or
CV4.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
5. Stuck or defective counterbalance valve CB6
and/or CB7.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
6. Defective steer cylinder C8. Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
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Skyjack SJ85 AJ Specifications

General

Brand	Skyjack
Model	SJ85 AJ
Category	Boom Lifts
Language	English