Rhino Mounts DB150 manual Cylinder Rod Came Out

OPERATION

OPERATION

Problem	Possible Cause	Remedy
Cylinder Rod Came Out	Piston Nut backed off of	Improper retaining of nut, replace or rebuild as
of Cylinder	the Rod	required
	Relief Valve setting Too	Test relief valve and adjust or replace as
	High	required
Deck Cracks	Operator abuse	Overloading cylinder in the extend position
	Severe Use or Abuse	Excessive ground speed, Overload or impact
		with solid objects
	Vibration	Blades or blade bar bent, or blade missing
Deck Worn On	Poor or missing welds	Manufacturing defect
	Mowing over sand or rocks	Operator abuse
Underside (Cutting
Head Only)	Abusive operation,	Operator abuse
	mowing heavy debris
	Normal operational wear	Normal wear over time can result in cracks or
		damage. Check deflectors and guards.
		Replace as required.
Hydraulic System Noise	Restrictions to oil flow in	Identified by concentration of heat, due to Line
(Squeal)	the system	restriction bent hoses or contamination.
	Relief Valve Malfunction	Relief setting too low, will result in generation of
		heat, Adjust or replace as needed.
	Cavitation	induction of air into the system due to leakage
Hydraulic System	Wrong Oil Used	Flush and refill as required
	Excessive Engine RPM	Engine RPM should not exceed 540 PTO
Overheating		speed as indicated on the tractor tachometer
	Restriction in Hydraulic	Identified by a concentration of heat due to
	System	crimped hydraulic line, relief valve failure or
		contamination.
	Relief Valve Set too low	Test and adjust or replace as required
	Internal Leakage due to	Test pump and motor. Replace or repair as
	wear	required
	Excessive Pump or Motor	Test pump and motor. Replace or repair as
	Wear	required
	Wrong Oil	Flush and refill as required with proper oil
	Abusive Operation (Heavy	Operator abuse
	Material or debris)
Motor Flange or Motor	Excessive Torque load	Impact with solid objects or excessive loading
Housing Breaking	due to abuse	of mower due to high ground speed.
	Loss of Bolt torque at	Due to excessive loading. Check bolts daily,
	flange or at motor section	and replace or repair as required

DB150 07/11 Operation Section 4-42

© 2011 Alamo Group Inc.