Modern AG 20' Predator - Manual (Page 62)

62 - 20’ Predatorrr
oPERation
Problem Possible cause Remedy
Clutch Slips excessively Clutch linings badly worn or Repair clutch per maintenance
plates warped. section of manuals.
Too much power for clutch. Reduce ground speed and material
intake.
Oil on facings. Replace facings.
Friction facings glazed. Clean with emery cloth.
Blade Wears too Fast Cutting in sandy conditions. Increase cutting height.
Cutting in rocky conditions. Increase cutting height.
Soft “will fit” blades. use genuine Rhino Ht blades.
Hydraulic Cylinder Will not Op. not enough pressure. Check pressure.
Valve not connected properly. Re-plumb valve.
Quick coupler not completely Complete connection.
connected.
Oil Squirting from Breather Oil leaking by piston ring. Do not carry cutter on cylinder.
vent hole (a small amount of leakage is (use stroke collars)
normal)
Piston “O” ring worn Replace piston “O” ring.
cylinder wall scored or pitted. Replace cylinder.
Wrong piston ring on piston. Use correct piston rings.
not Cutting Clean Blades dull. Sharpen or replace blades.
Blade rotation incorrect. use correct blade for carrier rotation
carrier RPM too low. Use correct PTO speed and
check for correct gear box ratio.
Cutter not level. adjust machine.
Tires mashing down grass. Move tires out of cutter overlap
area. minimum 60” inside tires.
Ground speed too fast. Reduce ground speed.
Blades locked back. Free blades.
Blades riding up due to blade Replace blade bolts.
bolt wear.
Streaking Conditions In Swath Conditions too wet for cutting. allow grass to dry before cutting.
Blades unable to cut that part of Slow ground speed of tractor but
grass pressed down by path of keep engine running at full PtO
tractor tires. rpm. move rear tires as wide as possible
so wing blades will pick up grass.
Dull Blades. Sharpen or replace blades.
Height of cutter lower at rear See cutting Height Instructions.
or front.