Skyjack SJ63 AJ+ Service Manual

183
SJ63 AJ+, SJ63 AJ 229043AAA
Hydraulic System - ANSI/CSA Section 4 – Troubleshooting Information
4.5-23 No High Speed Drive
1. Stuck or defective 2 speed valve 3H-45. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
2. Defective shift valve V5 in drive motor M1. Check motor. Repair or replace if necessary.
4.5-24 No Right Steer
1. Stuck or defective right steer valve 5H-23A. Clean valve. Check operation of valve. Repair or
replace valve as required.
2. Stuck or defective check valve CV2. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
3. Stuck or defective dual pilot check valve
DPOCV1.
Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
4. Defective steer cylinder C8. Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
4.5-25 No Left Steer
1. Stuck or defective left steer valve 5H-24A. Clean valve. Check operation of valve. Repair or
replace valve as required.
2. Stuck or defective check valve CV2. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
3. Stuck or defective dual pilot check valve
DPOCV1.
Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
4. Defective steer cylinder C8. Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
4.5-26 The Axle will not Oscillate
NOTE
The axle will only oscillate when the boom is fully retracted and is horizontal or below.
1. Stuck or defective axle lockout valve 3H-65. Clean valve. Replace if defective.
2. One or more counterbalance valves (CB14 or
CB15) failed to shift or is defective.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
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Skyjack SJ63 AJ+ Specifications

General

Brand	Skyjack
Model	SJ63 AJ+
Category	Boom Lifts
Language	English