Hayter T424 Operator's Manual page 72

1.72
TROUBLE SHOOTING
PROBLEM
After initial satisfactory
operation machine loses
power.
Cylinder "knocks" while
rotating.
TROUBLE SHOOTING
Continued.
POSSIBLE CAUSE
Worn pump or motor.
Low hydraulic oil level.
Incorrect oil viscosity.
Oil filter element
blocked.
Faulty pressure relief valve.
Overheating.
Leaks on suction hose.
High spot on cylinder or
bottom blade due to
contact with foreign
object.
Worn cylinder bearings.
REMEDY
Replace as necessary.
Fill hydraulic oil tank
to correct level.
Renew oil in hydraulic tank with
hydraulic oil of correct viscosity
grade, refer - SPECIFICATIONS.
Change filter element.
Have relief valve cleaned and
pressure checked. Consult your
Hayter dealer.
Check cylinder to bottom blade
adjustment. Reduce workrate i.e.
increase height of cut or reduce
forward speed.
Incorrect hydraulic oil
grade, refer - Problem
'Hydraulic Oil System
Overheating'.
Check and tighten fittings.
Replace hose if necessary.
Remove high spot with a stone
and backlap to restore cutting
edges. Serious damage will
necessitate regrinding.
Replace as necessary.
953910KG141004
1.72