Greensmaster 3300/3400
DPA Cutting Units
Page 8 -- 33
Disassembly (Fig. 38)
1. Positionmachineonacleanandlevelsurface,lower
cuttingunits,stopengine,engageparkingbrakeandre-
move key from the ignition switch.
2. To remove roller brush from brush shaft:
A. Loosen set screwin thebearinglocking collaron
left side of brush shaft.
B. Usingblindholeinbearinglockingcollarasanim-
pact point, unlock collar by striking it with a punch in
the opposite direction of brush r otation.
C. RemovetheLH brush support (item15),bearing
and locking collar from brush shaft and cutting unit.
D. RemovelocknutandJ--boltfrombothendsofthe
brush (Fig. 39).
E. 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 (item 2):
A. Loosen cap screw (item 22) and flange nut (item
8) that secure idler pulley assembly (item 6) to drive
plate.
B. Move idler pulley to loosen drive belt.
C. Carefullyremovedrivebeltfromdrive,drivenand
idler pulleys.
4. Disassembleroller brushcomponents asnecessary
using Figure 38 as a guide.
Assembly (Fig. 38)
1. If roller brush was removed from brush shaft, slide
brush onto shaft while rotating brush. Secure brush to
shaft with two (2) J--bolts and lock nuts. Make sure that
theJ--boltsareinstalledwiththethreadedportiononthe
outside of the brush (Fig. 39). 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 39
20 to 25 in--lb
(2.3 to 2.8 N--m)
1
2
3
4
2. Assemble roller brush components using Figure 38
as a guide and the following assembly notes:
A. The screws (item 12) that are used to secure the
cover(item1),drivenpulley(item10)anddriveplate
(item 9) have a threadlock feature to prevent the
screws from loosening. If original screws are being
re--used during assembly, apply Loctite #242 (or
equivalent) to threads of screws.
B. .Apply a light coating of grease to O--ring (item
18)beforeinstallingondriveplateflange.Makesure
that O--ring is correctly positioned in groove in
flange.
C. Apply antiseize lubricanttothreads of cap screw
(item5) thatretainsdrive pulley(item 3).Torquecap
screw from 70 to 80 in--lb (8 to 9 N--m) to secure
drive pulley to pulley driver.
D. Securedrivenpulley (item10) tobrushshaftwith
threadlock screw (item 12). Torque screw from 130
to 140 in--lb (15 to 16 N--m).
E. Secure pulley driver (item 4) to cutting reel shaft
with 100 ft--lb (136 N--m) torque.
3. If either of thebearing locking collars wasloosened,
tighten locking collar onto brush shaft:
A. Slide locking collar outward on brush shaft onto
the bearing collar. Rotate locking collar by hand in
the direction of normal brush rotation until the collar
is tight on the shaft.
B. Usingblindholeinbearinglockingcollarasanim-
pactpoint,lockcollarbystrikingitwithapunchinthe
normal direction of brush rotation.
C. Tighten set screw in locking collar to secure the
bearing assembly to the brush shaft.
DPA Cutting
Units
To Next Page
Loading...
