Cylinders/Loader Arms; Hydraulic Cylinders; Cylinder Leaks; Loader Arm Drops In Neutral - Toro Dingo TX 413 Service Manual

HYDRAULIC TROUBLESHOOTING

Cylinders/Loader Arms

Hydraulic Cylinders

Hydraulic cylinders convert hydraulic pressure and
flow into linear mechanical energy. Cylinders consist
of a sealed chamber, piston and piston rod.
External Leaks
• Loose fittings
• Bad seal
Internal Leaks
• Leaking piston seals
• Scored cylinder bore
• Burr on the piston
Loose cylinder
• Bent cylinder rod
• Overloading
• High system pressure or flow
• Impact

Cylinder Leaks

Damaged Cylinder Barrel
• Replace Cylinder Barrel
• Determine cause of the damage
• Inspect loader arm for straightness or loose, worn
pivot pins
Rod Seal Leaks
• Replace damaged seal
• If damaged from contamination, locate the source
• Inspect piston for scratches and or nicks
Loose Parts
• Tighten loose parts/fittings
Piston Rod Damaged
• Inspect Piston for scratches and or nicks
• Replace affected part
11-8

Loader Arm Drops in Neutral

Broken or Leaky Hydraulic Lines between Control
Valve and Cylinder
• Check for leaks
• Tighten or replace affected hydraulic line fittings
Fluid Leaking Past Cylinder O-Rings
• Replace worn parts
• Wear due to contamination requires system
flushing
• Inspect cylinder barrel and piston
Fluid Leaking Past Control Valve
• Clean and inspect the valve
• Replace worn parts
• Wear due to contamination requires system
flushing
Valve Control Lever not Returning to Neutral when
Released
• Check linkage for binding
• Check valve adjustment
• Check valve return spring
Valve Control Lever Sticks
Misaligned/Stuck Control Linkage
• Realign linkage
• Lubricate linkage
• Return spring
Tie Bolts Over-tightened
• Loosen bolts and torque to specification
• Wrong bolts or hardware
• Assembled incorrectly
Broken/Damaged Internal Valve Parts
• Replace broken/damaged parts
• If damaged from contamination, locate the source
Rev. 001 TX 413 Service Manual