Land Pride WC1504, Operator'S Manual

Page: 33 / 44

Section 4: Maintenance & Lubrication
Table of Contents
WC1504 Wood Chipper 328-098M 2/10/21
29
5. Inspect rotor knives (#6) for wear. Reverse knives if
unused cutting edge is still sharp, resharpen knives if
both edges are dull, and replace knives if both edges
are ground so far that the proper gap between rotor
knife and ledger knife cannot be achieved.
Reverse Rotor Knives
a. Flip rotor knives over so that the sharp edges are
leading in rotation and reattach them with existing
3/8"-24 x 5/8" GR8 bolts (#5). Continue with
steps 6-8 on this page.
Resharpen Rotor Knives
a.
Refer to Figure 4-2:
All rotor knives should be
sharpened at the same original angle of 45
o
and
must be sharpened at the same service time to
maintain proper balance. Take the following
precautions when sharpening rotor knives.
•
Always grind rotor knives to a sharp 45
o
edge.
•
Always grind cutting edge straight and
square (90
o
) to the rotor knife’s side.
•
Always keep corners of cutting edges square,
not rounded.
•
Do not sharpen back side of cutting edge.
•
Do not remove more material than necessary.
•
Do not heat and pound out a cutting edge.
•
All rotor knives should weigh the same.
b. Refer to Figure 4-1 on page 28: Reattach rotor
knives (#6) to rotor (#1) with 3/8" bolts (#5).
Continue with steps 6-8 on this page.
Replace Rotor Knives With New Knives
Refer to Figure 4-1 on page 28:
a. If rotor knives have been reinstalled and ledger
knife cannot be adjusted to the proper clearance,
then replaced rotor knives with new knives. See
“Check Ledger Knife Clearance” on page 26 for
allowable clearance dimensions.
b. Reattach new rotor knives to rotor (#1) with
3/8" bolts (#5). Continue with steps 6-8 below.
6. Tighten rotor knife bolts (#5) to 35-40 ft-lbs. See
“Additional Torque Values”
on page 38 for more
information.
7. Adjust ledger knife to the proper clearance
dimensions. For detailed adjustment instructions,
see
“Check Ledger Knife Clearance”
on page 26.
8. Close upper rotor housing (#2). See step 5 under
“Rotor Knife Access”
on page 28.
Sharpening Rotor Knives
Figure 4-2
Ledger Knife Maintenance
Refer to Figure 4-3:
CAUTION
!
To avoid minor or moderate injury:
Knives and ledgers are sharp. ALWAYS wear gloves and eye
protection while inspecting and adjusting ledger clearance.
The ledger knife has four sharp edges. When an edge
becomes worn and dull or rounded, rotate ledger knife to
a new sharp edge.
1. Remove cap screws (#1), flat washers (#2), and
ledger knife (#3).
2. Rotate ledger knife (#3) to a new cutting edge and
reinstall with existing 3/8"-24 x 5/8" GR8 cap
screws (#1) and flat washers (#2).
3. Adjust ledger knife to the correct clearance. See
“Adjust Ledger Knife”
on page 27.
Accessing Ledger Knife
Figure 4-3
Land Pride Rotor Knife & Bolt Part Nos.
Part No. Part Description
820-517C KNIFE REVERSIBLE - 25" ROTOR
802-961C HHCS 3/8-24X5/8 GR8 PLT
35691
Land Pride Ledger Knife Part No’s.
Item Part No. Part Description
1 802-961C HHCS 3/8-24X5/8 GR8 PLT
2 804-012C WASHER FLAT 3/8 SAE PLT
3 820-518C KNIFE, LEDGER 4"
35692