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Disassembly (cont'd)
Hydraulic Motor and Arm
1. Remove nut (69) from pivot shaft (12) and disas-
semble from arm (14).
2. Remove the eight screws (51) from motor guard
(19). Remove the two screws (52) and washer (54)
from arm (14).
3. Remove nut (66), flanges (15 & 18) from drive shaft
(13).
4. Remove two screws (50) from motor and arm (14).
Disassemble motor (14) from the drive shaft (13).
5. Remove fittings (23 & 21) from motor (20).
Drive Shaft
1. Bend the locking tab on washer (49) from nut (48).
Remove nut (48) from drive shaft (13). Remove
washer (49).
2. Remove retaining ring (46) from drive shaft (13).
Remove drive shaft (13) from bearings (45).
3. Remove retaining rings (47) from arm (14) housing.
Remove bearings (45) from arm housing (14).
Inspection
1. O-Ring and Seals: Always replace O-rings and
seals in components that have been disassembled
with new O-rings and seals during assembly. A
packing kit is available that includes all O-rings and
seals.
2. Valve Spool (28 & 29): All surfaces must be smooth
and free of grooves, nicks or scratches. If it has
grooves, nicks or scratches, replace the spool.
3. Blade Flanges (16 & 15): Face surfaces must be
free of nicks. Remove nicks or burrs with a flat file or
replace.
4. Drive Shaft (13): Check threads on blade end of
drive shaft (13). They must have good form without
any flat areas, etc. Replace if necessary.
5. Outer Flange (16): Be sure pin (75) is properly
installed in flange. Replace if necessary.
Greenlee Textron Inc. / Subsidiary of Textron Inc.
H4645 Rail Cut-Off Saw
Assembly
When assembling parts refer to the Parts illustrations for
correct placement and orientation of parts.
Clean all parts with solvent (take care to protect eyes),
then dry thoroughly. Do not expose O-rings or other
packing components to solvent for long periods of time.
Inspect all parts as they are assembled for signs of
damage, wear, cracks, etc. Do not install any parts
which appear to be damaged.
Apply hydraulic fluid or O-ring lubricant to all O-rings and
all metal surfaces which O-rings must slide over. When
installing an O-ring over a sharp edge, use a rolling
action to avoid damage to O-ring.
Whenever assembled parts cause metal to metal con-
tact, coat the surfaces with hydraulic fluid or O-ring
lubricant.
Drive Shaft
1. Install the two retaining rings (47) in the motor
housing in the arm (14).
2. Install the two bearings (45) in the motor housing in
the arm (14).
Note: It may require a minimum press to fit properly
install bearing (45).
3. Place retaining ring (46) on the drive shaft (13).
Install drive shaft (13) into bearings (45).
4. Install washer (49) and nut (48). Torque nut (48) to
20 lbs. ft. Hold drive shaft (13) securely and loosen
nut (48) only to allow drive shaft (13) to move freely
in the bearing and not allow any axial or radial
movement of drive shaft (13) - (Approximately 5
degree movement of nut [48]). Secure nut (48) in
place by bending locking tab on washer (49) into slot
on nut (48).
Hydraulic Motor and Arm
1. Install the square key on motor (20) drive shaft.
Install motor (20) drive shaft into saw drive shaft (13).
Secure motor (20) to arm (14) with two bolts (50).
2. Install fittings (22 & 23) in motor (20) return and
pressure ports.
3. Install guard (5) onto arm (20) using the two washers
(54) and two screws (52). Also install the two covers
(19) onto the guard (5) using the eight screws (51).
4. Place key (67) on drive shaft (13) and install blade
flanges (16 & 15) and secure in place using nut (66).
Blade Guard and Handle
1. Install blade guard (3) and handle (4) to the arm
(14), using the four screws (65) and four nuts (53).
18
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
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