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Section 5: Maintenance & Lubrication
1/07/09
SC2660 & SC2672 Skid Steer Rotary Cutter 326-025M
Land Pride
Table of Contents
Maintenance
Proper servicing and adjustment is the key to the long life
of any implement. With careful and systematic inspection,
you can avoid costly maintenance, time and repair.
After using your Rotary Cutter for several hours, check all
bolts to be sure they are tight.
Replace any worn, damaged or illegible safety labels by
obtaining new labels from your Land Pride Dealer.
Cutter Blade Maintenance
!
DANGER
Always disconnect hydraulic hoses from the Skid Steer before
servicing underside of deck. The motor can be engaged if Skid
Steer is started resulting in possible damage to the cutter,
bodily injury and/or death.
!
WARNING
Always secure the cutter deck in the up position with solid
supports before servicing the underside. Never work under
equipment supported by hydraulics. Hydraulics can drop
equipment if controls are actuated or if hydraulic lines burst.
Either situation can drop the cutter instantly even when power
to the hydraulics is shut off.
Always inspect cutting blades before each use. Make
certain they are properly installed and are in good
working condition. Replace any blade that is damaged,
worn, bent, or excessively nicked. Small nicks can be
ground out when sharpening.
Remove cutting blades and sharpen or replace as follows:
1. Align blade bolt with access hole in deck.
2. Place skid steer in park and/or set brakes, shut engine
off and remove ignition key.
3. Always disconnect hydraulics from Skid Steer and
secure cutter deck in the up position with solid
supports before servicing underside of cutter.
4. See Figure 5-1. Unscrew locknut (#6) to remove
cutting blade (#3). Blade bolt (#1) is keyed and will
not turn freely.
5. Both blades should be sharpened at the same angle
as the original cutting edge and must be replaced or
re-ground at the same time to maintain proper
balance in the cutting unit. The following precautions
should be taken when sharpening the blades:
a. Do not remove more material than necessary.
b. Do not heat and pound out a cutting edge.
c. Do not grind blades to a razor edge. Leave a blunt
cutting edge approximately 1/16” thick.
IMPORTANT: Replacement blades should be
ordered in pairs. Order only genuine Land Pride
blades. Other blades may not meet specifications.
d. Always grind the cutting edge so that the end of
the blade remains square to the cutting edge and
not rounded.
e. Do not sharpen the back side of the blade.
f. Both blades should weigh the same after
sharpening with not more than 1 1/2 oz.
difference. Unbalancedblades willcause excessive
vibration which can damage gearbox bearings and
create structural cracks.
6. Carefully check cutting edges of blades in relation to
blade carrier rotation to ensure correct blade
placement. Cutter blades must be installed with
cutting edge leading in rotation and airfoil (lift) must be
oriented towards the top of the deck.
Refer to Figure 5-1:
7. Start by assembling blades without shim (#2). Insert
blade bolt (#1) through blade (#3), dish pan (#4) and
flat washer (#5). Temporarily secure blade with a used
1 1/8"-12 nut. Draw nut up snug. Do not tighten.
Cutter Blade Assembly
Figure 5-1
8. Check blade deflection. If deflection is greater than
3/4", remove blade bolt and reassemble as before
except include shim (#2) when reassembling. Select
shim thickness based on deflection. The greater the
deflection, the thicker the shim.
9. Once blade deflection is correct, replace used nut
with new locknut (#6) and torque to 450 ft. lbs.
10. If replacing dishpan (#4), nut on gearbox output shaft
should be torqued to 450 ft-lbs. minimum and secured
with a cotter pin installed through the nut and bolt and
both legs bent opposite directions around nut.
IMPORTANT: Shim (#2) below may or may not be
required. If blade deflection is less than 3/4" without
a shim, then the shim is not used. However, a shim
is required if blade deflection is greater than 3/4".
IMPORTANT: Locknuts can loose their ability to lock
properly once removed. Therefore, always use a
used blade nut or plain nut in steps 7 & 8 below and
then replace used nut with new locknut in step 9.
3/4" maximum
blade deflection
when blade
bolts are tight
24590
Section 5: Maintenance & Lubrication