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Reelmaster 3550−D Hydraulic SystemPage 4 − 95
Removal
1. Park the machine on a level surface, engage parking
brake, lower cutting units and stop engine. Remove key
from the ignition switch.
2. Read the General Precautions for Removing and
Installing Hydraulic System Components in this chapter.
3. Label all hydraulic connections for assembly pur-
poses (Fig. 59). Thoroughly clean hydraulic connec-
tions prior to loosening hydraulic lines from reel motor to
prevent hydraulic system contamination.
CAUTION
Before opening hydraulic system, operate all hy-
draulic controls to relieve system pressure and
avoid injury from pressurized hydraulic oil. See
Relieving Hydraulic System Pressure in the Gen-
eral Information section of this chapter.
4. Disconnect hydraulic hoses from fittings in reel mo-
tor. Allow lines to drain into a suitable container. Remove
and discard O−rings.
5. Put caps or plugs on disconnected hoses and fittings
to prevent contamination.
6. Loosen two (2) flange nuts or flange head screws
that secure the hydraulic reel motor to the cutting unit
side plate (Fig. 60). Rotate motor clockwise and remove
motor from cutting unit.
7. Inspect the O−ring on the reel motor flange and re-
place O−ring if damaged.
8. If hydraulic fittings are to be removed from motor,
mark fitting orientation to allow correct assembly. Re-
move fittings from motor and discard O−rings.
Installation
1. If hydraulic fittings were removed from motor, lubri-
cate new O−rings, position O−rings to fittings and install
fittings into motor ports (see Hydraulic Fitting Installation
in this chapter). Make sure that fittings are orientated
correctly.
1. Hydraulic reel motor 2. Flange nut or flange
head screw (2)
Figure 60
2
1
2. Coat spline shaft of the reel motor with No. 2 multi-
purpose lithium base grease. Lubricate the O−ring on
the motor flange with clean oil.
3. Rotate the motor clockwise so the motor flanges
clear the flange nuts in the cutting unit side plates. Align
reel motor shaft splines with cutting reel insert splines.
Slide motor shaft into reel insert.
4. Rotate the motor counter−clockwise until the motor
flanges are encircling the cap screws in the side plates.
While holding motor, tighten two (2) flange nuts or flange
head screws to secure reel motor to cutting unit
(Fig. 60).
5. Remove caps or plugs from fittings and hoses.
IMPORTANT: When installing the hydraulic hoses,
make sure that hydraulic hoses are straight (not twisted)
before tightening the hoses to the motor fittings.
6. Lubricate and install new O−rings on motor fittings.
Correctly connect hydraulic hoses to the motor using la-
bels placed during removal procedure (Fig. 59).
7. Check oil level in hydraulic reservoir and add correct
oil if necessary.
8. Follow Hydraulic System Start−up procedures (see
Hydraulic System Start−up in this section).
Hydraulic
System