Troubleshooting Guide, Problem Possible Cause Remedy

13. Troubleshooting Guide

Problem	Possible Cause	Remedy
Shearing M/B Carrier	Lack of lubrication	Lubricate Pivot Pin
Pivot Pin Bolt	Bolt not tightened properly	Tighten Bolt to proper torque
Bent Moldboard	Small curve is normal from weld pull	Can be removed but will not
		affect operation

	Hitting hidden objects
Blade will not penetrate soil	Cutting edge dull
	Blade set to straight
	Soil too hard
A-Frame bent	Hitting hidden objects in the backfill
	position
Moldboard digging in too much	Blade pitch excessive
	Soft ground.
Unable to hold level ground	Tractor and Blade following contour
	Tractor Draft Control lifting Blade
Hydraulic Cylinder(s)	Not enough pressure
will not operate	Valve not connected properly
	Quick Coupler not completely
	connected
Hydraulic Pump not shutting	Using Open Center Valve
off on Closed Center System	Open Center Conversion Plug
	Open Center Conversion Plug
	Pumping over Relief Valve
Oil leaking at hose connection	Connection not tight
	Did not use sealant
	Connection cracked from
	over-tightening
	Mismatched Connection threads
	or types.

Know soil conditions, keep speed to a minimum.

Replace Cutting edge Increase Top Link length Use scarifiers to loosen soil

Use slow speed when in unknown soil conditions

Adjust Top Link

Install Gauge Wheel.

Install Skid Shoes.

Install Gauge Wheel

Set Tractor Draft Control

Check pressure

Re-plumb Valve

Complete connection

Replace Valve or Conversion Plug and Main Relief

Replace with Closed Center Plug Replace with No Relief Plug

Tighten connection

Apply a good sealant to connection Replace cracked connection

Use correct connectors

2500 01/11

Operation Section 4-24