6.Slide the cutterhead out the rabbeting side.
7.Loosen hex cap screw (A, Figure 33) and remove pulley (B, Figure 33) and key (C, Figure 33).
8.Loosen screws (D, Figure 33) on both sides and remove bearing cap plates (E, Figure 33).
NOTE: Figure 33 shows the pulley end of the cutterhead. The procedure is similar for breaking down the opposite end of the cutterhead – refer to assembly drawing on page 39 for the specific parts.
IMPORTANT: If the bearings (G, Figure | 33) | Figure 33 |
need replacement, it is strongly recommended |
| |
this be done by qualified service personnel. The |
| |
bearings are press fitted and must be removed |
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with an arbor press. |
|
|
9. To |
| |
above procedure. NOTE: Before | re- |
|
installing, make sure the machine’s curved seats of the base casting are free of dirt, dust or grease, which will help ensure a tight fit.
12.3Knife Inserts (Helical Cutterhead)
When knife inserts become dull enough so that it is noticeable when cutting, they should be turned over or replaced entirely. A sharp knife works easier and results in longer blade life. The penalty paid for a dull knife is less blade life and greater wear and tear on all parts of the machine.
An advantage of the helical style cutterhead is that if knife inserts develop nicks, these inserts can be individually flipped or replaced without the need to disturb the other inserts. See “Replacing Knife Inserts (Helical Cutterhead)” for this procedure.
If the jointer is used often, keeping a spare set of knife inserts on hand is recommended. Knife inserts (stock no. 6400013) may be ordered from your authorized Powermatic distributor or by calling
Gum and pitch which collect on the knife inserts cause excessive friction as the work continues, resulting in overheating of the inserts, less efficient cutting, and consequent loss of blade life. Use "Gum and Pitch Remover" or oven cleaner, to carefully wipe off the knife inserts.
Jointer knife inserts are very sharp. Use care and proceed slowly when working with or around the cutterhead.
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