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OPERATION
FN20/FN14 NITRO 02/10 Operation Section 4-48
© 2010 Alamo Group Inc.
OPERATION
15. TROUBLE SHOOTING GUIDE
Problem Possible Cause Remedy
Excessive Vibrations Check Gear box bolts. Tighten if loose.
Check For loose nuts on Tighten If loose
bladeholder and blades
Check for bent output shaft. Replace shaft if bent.
If shaft is bent oil will normally.
leak from the bottom seal.
Check to see if blades are . Free blades so they swing
free swinging.
Check for even wear on each . Weigh blades. Weight should be
blade tip. Were both blades within 1 oz. Always replace both blades
changed at the same time.
Blade Broken. Replace blades, in sets.
Blade carrier bent. Replace carrier.
Blade hub not properly Remove hub, check tapered spline
seated on shaft shaft, clean and replace.
New Blade or bolts matched Replace blades or bolts in sets
Drivelines not phased Replace Drivelines.
Gearbox Overheating Low on lubricant. Fill to level plug.
Improper type lubricant. Replace with proper lubricant.
Excessive trash build-up . Remove trash.
around gear box
Bearing or gears set up improperly Consult your dealer.
Gearbox Noisy Rough gears. Run in or change gears.
Worn bearing. Replace bearing
Gear Box Leaking Damaged oil seal Replace Seal.
Bent shaft. Replace oil seal and shaft.
Shaft rough in oil seal area. Replace or repair shaft.
Oil seal installed wrong. Replace seal.
Oil seal not sealing in the housing. Replace seal or use a sealant
on OD of seal.
Oil level too high. Drain oil to proper level.
Sand hole in casting. Replace castings or gear box.
Gasket damaged. Replace gasket.
Bolts loose. Tighten bolts.
Clutch Slips Excessively Clutch linings badly worn or Repair clutch per maintenance
plates warped. section of manuals.
Too much power for clutch. Reduce speed and materiall intake.