Trouble Shooting Guide - Bush Hog 1812 Operator's Manual

15. TROUBLE SHOOTING GUIDE

Problem
Excessive Vibrations
Gearbox Overheating
Gearbox Noisy
Gear Box Leaking
Clutch Slips Excessively
1812 08/14
© 2012 Alamo Group Inc.
OPERATION
Possible Cause
Check Gearbox bolts.
Check for loose nuts on
Blade holder and Blades
Check for bent output shaft.
If shaft is bent oil will normally
leak from the bottom seal.
Check to see if blades are
free swinging.
Check for even wear on each
blade tip. Were both blades
changed at the same time?
Blade Broken.
Blade carrier bent.
Blade hub not properly
seated on shaft
New Blade or bolts matched
Drivelines not phased correctly.
Implement & tractor yokes must
be in line.
Low on lubricant.
Improper type lubricant.
Excessive trash build-up
around gear box
Bearing or gears set up improperly
Rough gears.
Worn bearing.
Damaged oil seal
Bent shaft.
Shaft rough in oil seal area.
Oil seal installed wrong.
Oil seal not sealing in the housing.
Oil level too high.
Sand hole in casting.
Gasket damaged.
Bolts loose.
Clutch linings badly worn or
plates warped.
Too much power for clutch.
Oil on facings.
Friction facings glazed.
Operation Section 4-48
Remedy
Tighten if loose.
Tighten if loose.
Replace shaft if bent.
Free blades so they swing
Weigh blades. Weight should be
within 1 oz. Always replace both blades
Replace blades, in sets.
Replace carrier.
Remove hub, check tapered spline
shaft, clean and replace.
Replace blades or bolts in sets
Replace Drivelines.
Fill to level plug.
Replace with EP85W-140.
Remove trash.
Consult your dealer.
Run in or change gears.
Replace bearing
Replace Seal.
Replace oil seal and shaft.
Replace or repair shaft.
Replace seal.
Replace seal or use a sealant
on OD of seal.
Drain oil to proper level.
Replace castings or gearbox.
Replace gasket.
Tighten bolts.
Repair clutch per maintenance
section of manuals.
Reduce ground speed and material
intake.
Replace facings.
Clean with emery cloth.