Kubota AP-SC4060 User Manual

Section 8: Troubleshooting
Table of Contents
AP-SC4060 & AP-SC4072 Skid Steer Rotary Cutters 326-765MK 12/14/18
32
Section 8: Troubleshooting
Troubleshooting Chart
Problem Cause Solution
Motor Oil Seal Leaking
Return line from motor has been pinched
or is collapsed.
Replace lower seal of motor. Check motor
return hose for kinks.
Case drain line is not properly connected.
Connect case drain line to the hydraulic
motor and skid steer reservoir.
Spindle Hub Seal Leaking Seal is worn or torn.
Replace lower seal of motor and spindle
hub output shaft seal. Check motor return
hose for kinks.
Blades wearing excessively
Cutting on sandy ground. Raise cutting height.
Contacting ground frequently. Raise cutting height.
Blades coming loose Blade bolts not tightened properly.
Use new nut and torque blade bolt nuts to
450 ft lbs.
Blade carrier becomes loose
Running loose in the past.
Replace gearbox output shaft and blade
carrier.
Blade carrier hardware not tight enough. Tighten to specified torque.
Blade bolt holes worn
Blade hardware running loose. Replace blades and blade bolts if worn.
Not maintaining tip speed. Slow down to maintain tip speed.
Blades breaking Hitting solid objects.
Thoroughly check the cutting area
BEFORE beginning to cut. Be alert during
cutting.
Blade carrier bent Hitting solid objects.
Avoid solid objects/Be alert. Replace blade
carrier.
Excessive skid shoe wear
Cutting height not level. Adjust deck height or replace.
Soil abrasive. Raise cutting height.
Cutting too low. Raise cutting height.
Excessive vibration
Locked blades. Inspect and unlock blades.
Blades have unequal weight. Replace blades in sets of 3.
Blade carrier bent. Replace blade carrier.

Kubota AP-SC4060 Specifications

General

Brand	Kubota
Model	AP-SC4060
Category	Cutter
Language	English