Service Manual

Table Of Contents
Reelmaster 3550--D/3555--D/3575--D
DPA Cutting Units
Page 7 -- 14
Leveling Rear Roller
The precision machined components of the cutting unit
frame keep the rear roller and cutting reel in alignment
(parallel). If the side plates are disassembled or as the
cutting reel wears, a limited amount of side plate adjust-
ment is possible to m ake sure that the cutting unit is
properly aligned.
1. Place the assembled cutting unit on a surface plate.
2. Make sure that bedknife is properly adjusted to cut-
ting reel.
3. Check if the rear roller is level to the cutting reel by
using a 0.005” (0.13 mm) feeler gauge to determine the
clearance between the surface plate and the rear roller
at each end of the roller. As the rear roller is rotated one
full turn, check if the feeler gauge will consistently pass
under the roller at one end but will not pass under the op-
posite end. Check rear roller with the feeler gauge just
inside the machined ends of the roller. A frame adjust-
ment should be made if there is consistently more than
0.005” (0.13 mm) clearance under the roller on one end
but not on the other.
NOTE: Cutting units with 5” diameter reel use two (2)
shoulder bolts to secure side plates to frame. Cutting
units with 7” diameter reel use three (3) shoulder bolts
to secure side plates to frame.
4. Loosen, but do not remove, shoulder bolts that se-
cure the side plate to the frame opposite the side that is
not level (Fig. 21).
5. Adjust the position of the side plate to parallel the
rear roller and cutting reel. Then, tighten the shoulder
bolts to a torque from 27 to 33 ft--lb (37 to 44 N--m).
6. After tightening the side plate, recheck the rear roller.
If necessary, loosen and adjust second side plate.
7. If rear roller is still not level after adjusting both side
plates, check to see if cutting reel is tapered (see Pre-
paring Reel for Grinding in this chapter). If cutting reel is
not tapered and rear roller is not level, a 0.010” shim
(part number 107-- 4001) is available to allow additional
rear roller adjustment. The shim would be used on one
side of the rear roller and should be installed between
the rear roller bracket and roller shim (Fig. 22). Tighten
the flange nuts to a torque from 15 to 19 ft--lb (20 to 26
N--m)
8. After leveling rear roller, complete cutting unit set--up
and adjustment sequence.
1. Shoulder bolt
2. Side plate
3. Rear roller
Figure 21
11
3
2
1
2
3
4
7
8
6
5
1. Rear roller assembly
2. Rear roller bracket
3. Carriage screw (4)
4. Flange nut (4)
5. Flat washer (4)
6. Roller shims (in storage
above side plate)
7. Roller shims (in use
below side plate)
8. 0.010” shim (if needed)
Figure 22
15 to 19 ft--lb
(20 to 26 N --m)