Snowthrowers - Bolens DuraTrac DGT 1800 Service Manual

ATTACHMENTS (Continued)
5100 SERIES
TRACTOR
PAGE 8-7 Rev. 3/92
MODEL 50146 GEAR BOX
REMOVAL
1. Before performing any maintenance
on the unit, disengage tractor PTO
drive, shut engine off, allow all
moving parts to come to a complete
stop, and disconnect spark plug
wires from spark plugs.
2.
Remove attachment from tractor.
3. Remove PTO protector (chain
guard).
4.
Locate master link and remove.
Remove chain.
5. Loosen set screws in sprocket and
remove sprocket.
6. Loosen locking collar set screws.
Loosen locking collar by inserting a
punch in the hole in the collar and
striking the punch with a hammer.
The collar is an eccentric (oval)
design (See Fig. 8-15). To loosen
the collar, turn it in the opposite
direction of normal rotation.
7. Clean all burrs and paint off driving
shaft.
8. Remove screws securing gearbox
support to housing (B, Fig. 8-16) and
gearbox.
9. Loosen set screws on ends of auger
bearing collars (C) . Remove screws
securing bearings (D). Slide Collars
Fig.
8-16
SNOWTHROWERS
and bearings inward against the
augers (E).
1 0. Pull auger assembly Forward and out • • A"
of housing. NOTE: fan will have
to
be positioned so It will
clear the
housing (Fig. 8·17).
11. Slide bearings and bearing collars off
the augers.
12. Remove shear pins (F, Fig. 8-16)
from augers. Mark augers with
masking tape and label them left and
right to aid in re-assembly.
IMPORTANT! IF AUGERS ARE
ASSEMBLED INCORRECTLY, THE
UNIT WILL NOT OPERATE
PROPERLY!
GEARBOX
DISASSEMBLY
NOTE: BEFORE
DISASSEMBLING
GEARBOX, IT IS
RECOMMENDED THAT
ALL BURRS, PAINT AND
RUST BE REMOVED
FROM AUGER AND FAN
SHAFT. THIS WILL AID
DISASSEMBLY.
1. Remove four (4) botts
securing gear case
halves together. Allow
oil to drain and slide
the gear case halves
Fig. 8-14
•
~·
Bearing
Collar
. off the shaft. Fig. 8·15
L-------------------------~
Fig. 8-17 ·