Maintenance And Inspection; Adjusting Bed Clamping; Changing Belt And Bearings - powermatic 4224B Gebrauchsanleitung

Fig 38
To accommodate large work pieces, you can mount the
bed extension to the lower set of holes, and mount an
extension post (included with # 6294905) to the tool rest
base.
The machined surfaces of bed end and leg must be
aligned flush.
Use a straight edge to check (Fig 39).
Fig 39
Install bed extension in the same manner as described in
chapter 7.7
For larger outboard work, a heavy outboard turning stand
is available (# 6294732)

8. Maintenance and inspection

General notes:
Maintenance, cleaning and repair work may only be
carried out after the machine is protected against
accidental starting by pulling the mains plug.
Clean the machine regularly.
Remove any foreign objects from the heat sinks of AC-
drive (Do not obstruct the air flow).
Inspect the proper function of the dust collection daily.
Defective safety devices must be replaced immediately.
Repair and maintenance work on the electrical system
may only be carried out by a qualified electrician.
(Warning: Wait five minutes for DC-bus capacitors
discharge before accessing the AC drive unit!)

8.1 Adjusting bed clamping

If adjustment is needed, remove the stop bolt on end of
bed (A, Fig 36).
Slide the headstock, tailstock or toolrest to the edge of the
bed and slightly turn the hex nut (B; Fig 40).
Test the clamping function and repeat if necessary.
Fig 40

8.2 Changing belt and bearings

Changing belt and bearings can be a difficult task.
By chance, remove headstock and take into a repair
station for servicing.
Disconnect the machine from the power source.
Open the door and remove the belt from the lower pulley.
Loosen two set screws (A, Fig 41) and unscrew the hand
wheel.
Fig 41
Loosen and remove the clamping nut (B) and lock washer
(C).
Use a wood dowel, or aluminium stock to knock spindle
towards the tailstock. (Use a material that is softer than the