Troubleshooting
2 - 2
Step-by-Step Pump and Controller Troubleshooting
1. Winch does not operate with the tractor running.
1.1 Is there oil in the reservoir?
No
Fill tractor reservoir.
Yes
Proceed to step 1.2.
1.2 Is the winch in
FREESPOOL
?
No
Proceed to step 1.3.
Yes
Shift winch out of
FREESPOOL
Function.
1.3 Is there a broken tube, loose fi tting, or burst hose?
No
Proceed to step 1.4.
Yes
Repair the fault.
1.4 Is the brake released?
No
Check brake release circuit or
mechanism.
Yes
Proceed to step 1.5.
1.5 Is the hydraulic hose routing in accordance with the hydraulic sche-
matic?
No
Correct the routing. Refer to the
Schematic & installation drawing.
Yes
Proceed to step 1.6.
Pilot Reducing Valve
1.6 Is there any pilot pressure from the tractor (port P at tractor interface
or pilot check port right side of dozer)?
No
Proceed to step 1.12.
Yes
Proceed to step 1.7.
1.7 Is the pilot standby pressure at least 275±15 psi while the dozer is
running at slow idle?
No
Proceed to step 1.8.
Yes
Proceed to step 1.10.
1.8 Is the pilot pressure 650 psi when the dozer blade is held over relief? No
Proceed to step 1.10.
Yes
Proceed to step 1.12.
1.10 Can the pilot pressure be increased by adjusting the tractor pilot reduc-
ing valve?
No
Proceed to step 1.11
Yes
Adjust to 650 psi. Proceed to 1.12.
1.11 Remove pilot reducing cartridge valve and inspect. Is it damaged?
No
Refit cartridge and proceed to
step 1.12.
Yes
Replace cartridge and return to
step 1.6.
Winch Control
1.12 Is lever control unit connected to pilot supply?
No
Connect joystick and check that
control signal RI & RO is actually
being supplied to the winch.
Yes
Proceed to step 1.13.
1.13 Is case pressure less than 35 psi?
No
Check drain hoses for restriction.
Yes
Proceed to step 1.14.
Summary of Contents for Allied H6G Series
Page 8: ...vi Notes...
Page 25: ...Section 1 1 17 Intentionally Blank...
Page 26: ...General 1 18 Figure 1 19 Sequence of Operation BRAKE ON...
Page 28: ...General 1 20 Figure 1 20 Hydraulic System LINE IN...
Page 30: ...General 1 22 Figure 1 21 Hydraulic System HI SPEED LINE IN...
Page 32: ...General 1 24 Figure 1 22 Hydraulic System LINE OUT...
Page 34: ...General 1 26 Figure 1 23 Hydraulic System HI SPEED LINE OUT...
Page 36: ...General 1 28 Figure 1 24 Hydraulic System BRAKE OFF...
Page 38: ...General 1 30 Figure 1 25 Hydraulic System FREESPOOL...
Page 40: ...General 1 32 Notes...
Page 41: ...Section 1 1 33 Figure 1 26 H6GH B Schematic High Performance Winch H6GH B...
Page 42: ...General 1 34 Figure 1 27 H6GH E Schematic High Performance Winch H6GH E...
Page 43: ...Section 1 1 35 H6GH J Figure 1 28 H6GH J Schematic High Performance Winch...
Page 44: ...General 1 36 H6GT E Figure 1 29 H6GT E Schematic Rescue Winch...
Page 51: ...Section 2 2 7 Notes...
Page 52: ...Troubleshooting 2 8 Notes...
Page 60: ...Service 3 8 Notes...
Page 83: ...Section 4 4 23 12 Remove the spool asssembly...
Page 119: ...Section 4 4 59 Notes...
Page 120: ...Repairs 4 60 Notes...
Page 121: ......