Powermatic PJ882 Infeed Table Stop Screws, Replacing Knives in the Cutterhead

Page 23

Infeed Table Stop Screws

The stop screws below the infeed table have the same function as those for the outfeed table. See “Outfeed Table Stop Screws” for instructions on adjustment.

Replacing Knives in the Cutterhead

Jointer knives are extremely sharp. Use caution and proceed slowly when working with or around the cutterhead.

1.Disconnect jointer from power source.

2.Remove the belt guard so that you can rotate the cutterhead by turning the motor pulley or by moving the drive belt. Do not grab the cutterhead itself to rotate it.

3.Remove the old knives by loosening the square head gib screws with an 8mm wrench. See Figure 36. The springs in the cutterhead will raise the knife for easy removal. Remove knife and gib.

4.Clean the gib and the knife slot. Sandwich the new knife and gib together and drop into slot. Make sure the knife is oriented properly in the cutterhead, as shown in Figure 36.

IMPORTANT: To position the knives for rabbet cuts, take a shop scale with 1/32” graduations and place it against the end of the cutterhead. Slide the knife out until it is at the 1/32” mark on the scale; that is, the knife will now be 1/32” beyond the edge of the cutterhead. The gib should remain in normal position, even with the edge of the cutterhead. See Figure 37. This adjustment will ensure that the knife clears the end of the gib and cutterhead, and has good contact with the workpiece. (See under “Operation” for further information on rabbeting procedures.)

5.The height and parallelism of the knife in the slot, both for rabbeting and normal jointer work, must now be set properly, to ensure correct operation as well as minimize the hazard of kickback. Refer to “Setting Knives at Correct Height and Parallel to Outfeed Table” on page 18 for information on adjustment and tightening procedures for the knives.

Before starting the jointer, make sure all gib screws are firmly tightened. A loose knife thrown from the cutterhead can cause severe or fatal injury.

Figure 36

Figure 37

23

Page 22 Page 24
Image 23
Page 22 Page 24
Contents Part No. M-1610079 Inch Parallelogram JointerMore Information WMH Tool Group Warranty Warranty and ServiceTable of Contents Page Page Page Introduction Description SpecificationsUnpacking Contents of the Shipping ContainerTools required for assembly Installation and AssemblyInstalling Cutterhead Guard Installing Switch ArmDust Collection Grounding InstructionsExtension cords Volt, Single Phase OperationThree Phase Operation Drive Belt Tension AdjustmentsTo tilt fence forward Drive Belt ReplacementFence Movement To slide fence forward or backwardTo tilt fence backward Setting the 90 StopSetting the 45 Forward Stop Fence StopsLocking Handles Table and Knife AdjustmentsSetting the 45 Backward Stop Fence RemovalSetting Tables Parallel Back of outfeed table shown Page Page Page Infeed Table Depth Stop Setting Infeed Table Depth of CutOutfeed Table Stop Screws Replacing Knives in the Cutterhead Infeed Table Stop ScrewsEliminating Play in Tables Operating ControlsOperation Edge Jointing Hand PlacementAlways use a hold down or push block when surfacing stock SurfacingBeveling RabbetingJointing Short or Thin Work Jointing Warped SurfacesSkewing Shear Cutting Direction of GrainSharpening Knives MaintenanceCutterhead Repairs Use caution when working around sharp knivesProbable Cause Remedy Troubleshooting Operating ProblemsTrouble Troubleshooting Mechanical and Electrical Problems Trouble Probable Cause Remedy Optional AccessoriesReplacement Parts Index No. Part No Description Size Qty Parts List Cutterhead AssemblyParts List Fence Assembly Fence Assembly Parts List Outfeed Table and Base Assembly Outfeed Table and Base Assembly Parts List Infeed Table Assembly PJ882-246 Infeed Table Assembly Parts List Stand Assembly TS-081B022 Stand Assembly Electrical Connections 1 Phase, 230 Volt Electrical Connections 3 Phase, 230 Volt Electrical Connections 3 Phase, 460 Volt Page WMH Tool Group
Top Page Image Contents