Spearhead DESTROYER
15
15
15
15
Service & Maintenance
Service & Maintenance
Service & Maintenance
Service & Maintenance
Regularly
Regularly
Regularly
Regularly
•
Check there is no wrapping of string, plastic, grass or other debris between
rotor boss and blades.
•
Inspect gearbox seals for leaks.
•
Regularly check the rotor boss retaining castle nut for tightness.
First remove the split pin, select the correct size socket in 3/4” drive and fully
tighten the nut. When replacing the split pin, do not slacken the nut to align
the hole, always tighten.
Failure to regularly check this nut will result in serious wear to the hub, which
is expensive to repair.
•
It is most important that all gearbox and blade bolts are regularly checked to be
very tight. When the machine is new there will be a ‘bedding in’ period
where very frequent checking is important.
Blades
Blades
Blades
Blades
The blades can be re-sharpened by grinding the cutting edges and care must be taken
that the blades are of the same weight and length after grinding. Do not over heat
when grinding, as this will affect the hardness of the blades.
All the blades are free swinging and swivel on hardened steel bushes, which are easily
replaced. When replacing blades, it is important that blades are replaced in sets, in
order to retain balance of the rotor. Bushes must be replaced when new blades are to
be fitted.
If the blades are showing any signs of severe wear, damage or cracking, they must be
replaced immediately. Never attempt to weld the blades, this will make them very
brittle thus extremely dangerous. Do not take risks with the cutting blades - if in doubt,
replace.
Skids
Skids
Skids
Skids
When operating on abrasive soils, particularly in stubbles and similar conditions with
thin ground cover, excessive skid wear may be expected. To provide extra protection
and to prolong life of the skids, special hard facing rods are available.
If working in wet and muddy conditions, ensure that debris is not allowed to build up on
the deck.
Caution!
When carrying out maintenance work on or near the blades be careful of free-swinging
blades over-centring and falling. It is recommended that protective headgear, gloves and
goggles are worn.
