Skyjack SJ6826RT - Hydraulic Systems; All Functions Inoperative; Steering Inoperative; Lift, Steer and First Drive Speed Inoperative

122
SJ6826RT, SJ6832RT
213560ABA
Section 4 – Troubleshooting Information Hydraulic Systems
4.3 Hydraulic Systems
4.3-1 All Functions Inoperative
1. Hydraulic oil level is low or empty. Check uid level and rell tank to proper level.
2. Defective Pump P1.
Check system pressures and Pump P1 functionality.
Replace if defective.
3. Broken Engine to Pump coupler. Check coupler. Replace if defective.
4. Defective or stuck Check Valves CV1 and/or CV2. Check valves. Clean or replace if defective.
5. System Relief Valve R1 defective or not adjusted
properly.
Adjust valve. Replace if defective.
4.3-2 Steering Inoperative
1. Stuck or defective Steer Right Valve 4H-23 or Steer Left
Valve 4H-24.
Check valves. Replace if defective.
2. Plugged Steer Orice O4. Clean orice. Replace if defective.
3. Steer Cylinder C7 damaged or bypassing internally. Check cylinder. Repair or replace if defective.
4.3-3 Lift, Steer and First Drive Speed Inoperative
1. Small Pump Dump Valve 2H-18C is stuck open. Check valve. Repair or replace if defective.
2. Worn or defective Small Pump section of Pump P1.
Check system pressures and Small Pump functionality.
Repair or replace if defective.
3. Check Valve CV1 or CV2 defective or stuck. Check valves. Clean or replace if defective.
4.3-4 Second Drive Speed Inoperative
1. Large Pump Dump Valve 2H-17B stuck open. Check valve. Repair or replace if defective.
2. Worn or defective Large Pump section of Pump P1.
Check system pressures and Large Pump functionality.
Repair or replace if defective.
3. Check Valve CV1 or CV2 defective or stuck. Check valves. Clean or replace if defective.
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