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25
Checking and Adjusting the Knife to Wear Plate Gap
When you replace the Knife, you must check and set the clearance between the Knife and Wear Plate. Set this clearance or gap to
1/16" by using the Gap Tool that is supplied with the Chipper and with a new Knife Kit. If the gap between the Wear Plate and the
Knife is not set correctly, you will have excessive vibration when chipping and the Knife will seem to be dull. The Wear Plate
should have a square edge and be free of dents or gouges. The Wear Plate can be hand sharpened (see steps below). Be careful
not to overheat it during the sharpening process. This will change the characteristics of the steel and you will then have to replace
the Wear Plate (see “Wear Plate Sharpening” in this chapter).
Tools Needed:
Gap Gauge (provided with Chipper)
7/16” Wrench
1.
Remove the Hopper Assembly (See “Inspecting the Chipper Knife and Wear
Plate” in this Chapter).
2.
Use a stick to rotate the Flywheel until the Knife is positioned next to the
Wear Plate (Figure 36).
3.
Slide the Knife Gap Gauge in between the Knife and Wear Plate to check the
clearance.
If the Knife Gauge slides freely, with no resistance and a lot of extra
space, the Wear plate must be adjusted. Proceed to step 4.
If the Knife Gauge will not slide down between the Knife and Wear
Plate, the Wear Plate must be adjusted. Proceed to step 4.
If the Knife Gauge slides in between the Knife and Wear Plate with
some resistance felt against them both or slides in between with
no noticeable space, then the Wear plate is properly adjusted. Skip
to step 7.
4.
To adjust the Wear Plate Gap, loosen the three Locknuts on the Carriage
Bolts just enough so the Wear Plate will move but still have a slight
resistance(Figure 37). Now you can slide the Wear Plate up or down (in or
out) to achieve the correct gap setting (Figure 38).
5.
Slide the Gap Gauge between the Knife and Wear Plate (Figure 36). Adjust
the Wear Plate against the Knife Gauge and tighten the outside Locknut,
check the gap, tighten the inside Locknut and then the center Locknut.
6.
Check the adjustment as described in the “Checking the Knife to Wear Plate
Gap” in the previous section.
7.
Reinstall the Hopper Assembly
Knife Gap
Gauge
Figure 36
Knife
Wear
Plate
Flywheel
Locknuts and
Carriage Bolts
Carriage
Bolts and
Locknuts
Figure 37
Wear
Plate
1/16" Gap
(thickness of
Gap Gauge)
Figure 38
Chipper
Knife
Wear
Plate
Flywheel
After any knife or wear plate maintenance or adjustment, rotate the chipper flywheel by using a wooden stick and watch and listen
carefully for any unusual noises, clicking or vibration. If you detect any of these, inspect the machine for damage, or any loose
parts. Repair or replace any damaged parts and tighten any loose parts before starting the DR SELF-FEEDING WOOD CHIPPER.
Summary of Contents for Premier 375
Page 12: ...12 DR SELF FEEDING WOOD CHIPPER...
Page 33: ...CONTACT US AT www DRpower com 33 Schematic Chipper Basic Assembly...
Page 35: ...CONTACT US AT www DRpower com 35 Schematic Base and Wheels Assembly...
Page 37: ...CONTACT US AT www DRpower com 37 Schematic Hopper Assembly...
Page 39: ...CONTACT US AT www DRpower com 39 Schematic Drive Assembly...
Page 40: ...40 DR SELF FEEDING WOOD CHIPPER Notes...
Page 41: ...CONTACT US AT www DRpower com 41 Notes...
