Section 2
2 - 3
1.14 Operate lever in both directions. Is pressure at RI & RO greater than
the standby pilot pressure of 275±15 psi?
No Verify that pilot pressure to direc-
tion spool PA & PB will cause the
pump to load sense & cause pilot
pressure to increase. Return to
step 1.12.
Yes Proceed to step 1.15.
1.15 Install gauges at motor ports A & B using 0-5000 psi gauges. Discon-
nect the brake line and move the lever in LINE-IN and LINE-OUT.
If pressure is below 3500 psi, is it possible to adjust the load sense
relief valve? (Refer to Section 3 for more details on pressure check
procedures.)
No Replace load sense high pressure
relief valve cartridge and return to
step 1.12.
Yes Adjust load sense high pressure
relief valve to 3500 psi. Proceed
to step 1.16.
1.16 Re-connect the brake line and put lever in LINE-IN and LINE-OUT
positions. Does winch operate?
No Check for mechanical faults in the
drive beyond the motor shaft.
Yes Operate the winch.
2. Winch is sluggish or erratic
2.1 Is the lever assembly in good condition? Is there air in pilot lines? No Repair or replace the lever assem-
bly. If there is air in the pilot lines,
bleed them.
Yes Proceed to step 2.2.
2.2 Is the brake fully released? No Check brake release circuit or
mechanism. See shuttle valve
in 2307491W or 2307021W
(logic control manifold) & valve
2307622W (brake valve).
Yes Operate the winch.
3. Winch drives in one direction only.
3.1 With the control lines switched does the winch drive in opposite direc-
tion only?
No Proceed to step 3.2.
Yes Control signal from one side of
joystick does not work properly.
Repair as necessary.
3.2 With control lines still switched does winch drive in initial direction only? No Proceed to step 3.3.
Yes Problem is one side of winch direc-
tion spool. Proceed to step 3.3.
3.3 Is there control pressure to PA & PB as well as from from RI & RO?
Winch begins to drive when the pressure at RI or RO is 150 psi.
No Correct control signal problem.
Yes Operate the winch.
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