Disc And Blade Maintenance; Disc Replacement - RHINO DM112 Operator's Manual

CAUTION!
BEFORE PERFORMING INSPECTIONS, MAINTENANCE, OR ADJUSTMENTS OF THE
MOWER, STOP THE TRACTOR ENGINE, REMOVE THE KEY, AND SECURE PARKING
BRAKE.
DISCONNECT THE DRIVELINE SHAFT.
BLOCK THE MOWER AND TRACTOR TO PREVENT MOVEMENT BEFORE
PERFORMING ADJUSTMENTS OR MAINTENANCE.
WARNING!
AFTER MAINTENANCE OR ADJUSTMENTS ARE COMPLETED, REMOVE ALL BLOCKS
AND TOOLS USED IN MAINTENANCE OR ADJUSTMENTS. FAILURE TO CLEAR THE
AREA AROUND THE MOWER BEFORE OPERATION COULD RESULT IN OBJECTS
BEING THROWN TOWARD THE OPERATOR OR BYSTANDERS.
Disk and Blade Maintenance
For longer service life, carefully check discs, blades and bolts daily. When replacements are necessary, use
only Rhino recommended parts. Use of parts not approved by Rhino could void the warranty.
Worn, bent or blunt blades will require more power. To cut efficiently replace worn or damaged blades as soon
as possible. To replace the blade, remove the Self-locking-Nut (AA), Spring Washer (CC) remove the Blade
Bolt (BB). Check the condition of the bolt and nut. If either are damaged, replace with new parts. The self-
locking nut must be replaced after being removed three times due to reduced grip on the bolt
threads. Torque the blade bolt to 48 FT-LBS. (See Figure 1.)
Important: During operation, the blades will reach a speed of 3000 RPM! It is very important that the nut and
bolt be in good condition and torqued to 48 FT-LBS.
CAUTION! A BENT BLADE CAN SERIOUSLY EFFECT THE OPERATION OF THE MACHINE AND THROW
MORE OBJECTS. REPLACE BENT BLADES AT ONCE! ALWAYS REPLACE BLADES AND
HARDWARE IN PAIRS TO MAINTAIN BALANCE.

Disc Replacement

Re-Installing Disc Assemblies.
Disc should be installed on the spline shaft as shown in (Figure 2) for different models. The cutting edges of the
blade should face the disc rotation direction. Blades are reversible.
ALWAYS REPLACE BLADES AND BLADE FASTENERS IN PAIRS TO MAINTAIN BALANCE.
CAUTION!
VIBRATION MAY LEAD TO COMPONENT FAILURE.
DM 07-02
© 2004 Alamo Group Inc.
MAINTENANCE
WAIT FOR ALL ROTATING MOTION OF THE MOWER TO STOP AND
Maintenance Section 5-2
DD
BB
Figure 1
AA
CC