SkyTrak 6042 Service Manual - Manual (Page 525)

10.19 Model 6042 Legacy Origin 7/02
Stabil-TRAK™ System
Figure 10-23 Stabilizer Cylinder Solenoids, Check Valves and Pressure Reducing Cartridge
10.5.8 Hydraulic Troubleshooting - Final Positioning Mode, Rod Oil Out
MA10,0790
7
8
6
5
2
10
11
1
9
Legend
1. Stabilizer Cylinder
2. Solenoid 4B
3. .060" Orifice with Solenoid Valve 4B
4. .060" Orifice with Solenoid Valve 4A
5. Solenoid 4A
6. Pressure Reducing Cartridge
7. Solenoid 12A
8. Solenoid 12B
9. Solenoid 3
10. Check Valve 2A
11. Check Valve 2B
4
3
Front
Not
OK
While traveling, ride feels spongy
(riding on 3 wheels).
Conditions:
• Ignition ON, engine
running
• Boom angle is
above 40°
• Travel select lever in
(F) FORWARD or
(R) REVERSE
• Park brake OFF
• Service brake
DISENGAGED
Inspect check valves 2A and 2B
on the stabilizer cylinder. Refer to
Section 8.13.9, “Stabilizer Cylinder.”
Replace check valve(s).
If OK
If OK
Not
OK
Refer to Section 10.4, “Stabil-TRAK™
Electrical Circuit Operation and
Troubleshooting.”
Check electrical wiring.
Not
OK
Check solenoid coils 4A and 4B on the
Stabil-TRAK™ manifold for correct
resistance (7-9 ohms).
Replace solenoid(s).
Not
OK
Remove solenoid cartridges 4A and 4B
from Stabil-TRAK™ manifold and inspect
for debris or damage. Refer to Section
8.13.9, “Stabilizer Cylinder.”
Clean passages or replace
cartridge(s).
If OK
If OK
Not
OK
Replace check valve(s).
Inspect check valves on frame sway
cylinder. Refer to Section 8.13.8, “Frame
Sway Cylinder.”