Landoll LOADOLL II, Operator'S Manual

HYDRAULIC SYSTEM (CONTINUED)

SYMPTOM 

PROBLEM: REMEDY

FOAMING OF OIL 

Incorrect, low, or dirty oil: 

replace, clean or add oil as

needed.

Water in oil: 

replace oil

Air leaks: 

check suction line and component seals for suction leaks.

Replace defective parts.

NOISY PUMP 

Low, incorrect, foamy oil: 

replace, clean, or add oil as

needed.

Suction line plugged: 

clean out obstruction or replace line.

Flush system, replace filter.

Pump damaged: 

repair or place.

LEAKY PUMP 

Damaged or worn shaft seal: 

Replace seal and/or shaft and

check for misalignment.

Loose or broken parts: 

Tighten or replace.

CYLINDERS MOVE WITH 

Leaking cylinder seals or fittings: 

Replace worn seals or fit-

CONTROL VALVE IN 

 tings.

NEUTRAL POSITION 

Control valve not centering when released: 

Check linkage

for binding and repair.

Valve damaged: 

Repair or replace. 

Counterbalance Valve Worn or Contaminated: 

Clean out 

obstruction or replace valve. 

CONTROL VALVE LEAKS 

Seals damaged or worn: 

Replace.

CYLINDER LEAKS 

Seals worn or damaged: 

Replace.

Rod damaged: 

Replace.

Barrel damaged: 

Replace.

CYLINDERS DO NOT FUNCTION, 

Leaking fittings or cylinder seals: 

Tighten loose fittings.

OR CREEP WITH PTO 

Replace worn seals or fittings.

DISENGAGED  

Counterbalance valve or o-ring leak: 

Replace defective compo-

                                                                  nent. 

SUBFRAME WILL NOT TILT

    Some units have a proximity switch so the subframe does not tilt 

      until the bed is slide back far enough, so that metal plate is not 

       directly above the proximity switch. Slide bed back far enough so 

              plate is not above switch.  

          The proximity switch should have indicator light on when PTO is      

engaged. The PTO wire engages a relay that powers the proximity 

switch. The proximity switch needs to have between 1/32” to 1/4” 

clearance with the metal plate at rear of bed to work properly. The 

magnet in the proximity switch allows the switch to send a signal to 

   the hydraulic dump valve to dump oil to the hydraulic tank so no       

pressure builds up to tilt subframe. 

.

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