Jet 708528, Operating Instructions And Parts Manual

Page: 18 / 36

18
Maintenance
Periodic or regular inspections are required to
ensure that the machine is in proper adjustment,
that all screws are tight, that belts are in good
condition, that dust has not accumulated in the
electrical enclosures, and that there are no worn
or loose electrical connections.
Buildup of sawdust and other debris can cause
your machine to plane inaccurately. Periodic
cleaning is not only recommended but mandatory
for accurate planing.
Close-fitting parts, such as the cutterhead slot
and gibs, should be cleaned with a cloth or brush
and non-flammable solvent, and freed from
clinging foreign matter.
Remove resin and other accumulations from feed
rollers and table with a soft rag and non-
flammable solvent.
Periodically check all the chains for proper
tension and adjust accordingly if required.
Tip : If a foreign object nicks the knives, instead of
throwing them away or trying to grind out the
deep nick, simply stagger the knives in the head,
moving one knife no more than 1/4" to the right
and another knife no more than 1/4" to the left.
The nick should no longer be noticeable.
The table should be kept clean and free of rust.
Some users prefer a paste wax coating. Another
option is talcum powder applied with a
blackboard eraser rubbed in vigorously once a
week; this will fill casting pores and form a
moisture barrier. This method provides a table
top that is slick and allows rust rings to be easily
wiped from the surface. Important also is the fact
that talcum powder will not stain wood or mar
finishes as wax pickup does.
Lubrication
The bearings on the cutterhead are factory
lubricated and sealed for life – no lubrication
required.
The lubricant in the gearbox must be replaced
every 2,500 hours. Multi-purpose gearbox
lubricant will be suitable.
To replace the gearbox lubricant:
Remove the drain plug (A, Fig. 30), and filler
plug (B, Fig. 30). Drain dirty oil thoroughly.
Tighten the drain plug (A, Fig. 30).
Fill with clean lubricant through hole (B, Fig.
30).
Reinstall and tighten filler plug (B, Fig. 30).
Figure 30