Cub Cadet 59A40003727 manual Troubleshooting, Jerky Operation, Slow Operation, Oil Leaks

Section 12: troubleshooting

PROBLEM		POSSIBLE CAUSE		SOLUTION
Jerky Operation	•	Air in hydraulic system	• Cycle cylinders several times to
				purge system of air.
	•	Cold hydraulic oil	• Run engine to warm oil.
	• Low hydraulic oil level		• Add oil to level specified.
	•	Poor oil circulation	• Change oil filter and clean
				screen in tractor hydraulic
				system.
	• Worn or damaged hydraulic pump		• Repair or replace pump.
	• Air leak in pump inlet line		• Check, tighten or replace inlet
				line.
Slow Operation	•	Faulty valve	• Repair or replace valve.
	• Air in hydraulic system		• Cycle lift cylinders and bucket
				cylinders several times to free
				system from air.
	• Hydraulic oil too heavy		• Change to proper oil.
	•	Oil filter plugged	• Clean and replace filter.
	•	Slow engine speed	• Increase engine speed rate.
	• Cylinder piston seals leaking		• Repair (if available) or replace
	• Valve out of adjustment or malfunctioning		• Adjust, repair or replace.
	• Tractor hydraulic pump malfunctioning		• Repair or replace pump.
	• Hydraulic couplers not completely engaged		•	Connect hydraulic couplers.
Oil Leaks	•	Loose hose connections	•	Tighten fittings.
	• Fittings or hoses defective		• Use thread sealer on pipe
				(tapered) threads.
	• Hydraulic cylinder seals worn or damaged		• Repair seals (if available) or
				replace cylinder.
	• Valve components worn or damaged		•	Repair and/or replace.
Cannot Raise Load	•	Low oil supply	•	Check oil level.
	•	Bucket overloaded	•	Try lighter load.
	• Hose fittings not fully engaged in couplers		•	Recouple hoses.
	• Cylinder piston seal leakage		•	Repair or replace.
	• Valve out of adjustment or malfunctioning		•	Repair or replace.
	•	Hydraulic pump malfunctioning	•	Repair or replace.
	• Load is greater than boom lift capacity		•	Check loader specifications.

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