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Reelmaster 3550−D
Cutting Units
Page 7 − 37
NOTE: Drive components for the rear roller brush are
located on the opposite side of the cutting unit from the
cutting reel hydraulic motor. Figure 48 shows compo-
nents used when the brush drive is on the left side of the
cutting unit.
NOTE: The Installation Instructions for the rear roller
brush kit has detailed information regarding assembly
and adjustment. Use those Instructions along with this
Service Manual when servicing the rear roller brush.
Disassembly (Fig. 48)
1. Position machine on a clean and level surface, lower
cutting units, stop engine, engage parking brake and re-
move key from the ignition switch.
2. To remove roller brush from brush shaft:
A. Remove the non−driven brush bearing assembly
from cutting unit.
B. Slide excluder seal from roller brush shaft.
C. Remove lock nut and J−bolt from both ends of the
brush (Fig. 49).
D. While rotating brush, slide brush from the shaft.
CAUTION
Contact with the reel or other cutting unit parts
can result in personal injury. Use heavy gloves
when handling the cutting reel.
3. To remove roller brush drive belt, rotate the cutting
reel and carefully pry the belt off the drive pulley.
4. Disassemble roller brush components as necessary.
Assembly (Fig. 48)
1. If brush was removed from shaft, slide brush onto
shaft while rotating brush. Secure brush to shaft with two
(2) J−bolts and lock nuts. Make sure that the J−bolts are
installed with the threaded portion on the outside of the
brush (Fig. 49). Torque lock nuts from 20 to 25 in−lb (2.3
to 2.8 N−m).
1. Roller brush shaft
2. J−bolt
3. Roller brush
4. Lock nut
Figure 49
1
2
3
4
20 to 25 in−lb
(2.3 to 2.8 N−m)
1. Housing (non−driven)
2. Housing (driven)
3. Bearing
4. Grease seal
Figure 50
1
2
3
4
3
4
4
2. If seals or bearings were removed from brush bear-
ing housings, install new components.
A. Pack bearings with grease before installation.
B. Press bearing into bearing housing so that bear-
ing contacts shoulder in housing bore.
C. Install grease seals as shown (Fig 50). Press
seals into housing so that seals contact bore
shoulders.
3. Assemble roller brush components (Fig. 48).
A. Apply a light coating of grease to inner diameter
of the grommet in drive bearing housing.
B. Tighten flange head screw that secures drive
pulley to drive shaft from 35 to 40 ft−lb (47 to 54
N−m).
C. Apply a light coating of grease to inner diameter
of the seals in roller brush bearing housings.
D. Inspect O−ring on non−driven end of roller brush
shaft and replace if necessary.
DPA Cutting
Units