Service Manual
Section
III
5060
6-SPEED
TRANSMISSION
DESCRIPTION
The 6-speed transmission
is
an all-gear transmis- The transmission features high and low range se-
sion utilizing sliding gears and splined shafts for easy lection. Low range provides an additional 4 to
1
re-
shifting.
All
shafts operate on needle or ball bearings duction in each of the
3
speeds forward and also re-
supported
by
the transmission case, which consists
of
verse.
R.H. and
L.H.
cast iron case halves, dowelled for
alignment and bolted securely together.
RATIOS
Gear
High
Range
low
Range
1st gear
66.8 to
1
267.2 to
1
2nd gear
42.4 to
1
169.6 to
1
3rd
gear
24.6 to
1
98.4 to
1
Reverse
51.5
to
1
206.0 to
1
The 6-speed transmission also incorporates a spur ditions in which normal differential action would
gear type of limited slip differential.
The
limited slip transfer power to the wheel with least traction.
feature provides increased traction under those con-
REMOVAL AND REPLACEMENT
Removal:
These basic instructions apply to all tractors
equipped with 6-speed transmissions. Deviate from
them as necessary for any particular tractor.
Remove mid-mounted or trailing attachments, or
hitches which might interfere with transmission re-
moval. Support the tractor frame ahead of the trans-
mission just enough that the rear wheels no longer
carry any weight.
Remove
the
R.H.
foot rest,
if
so
equipped,
belt
guard and
belt.
Disconnect the brake rod or remove
the brake band from the anchor bracket. On most
Installation:
NOTE: It
is
recommended that two pilot studs
be
used to facilitate transmission installation. To make
the studs, cut
the
heads off of two 3/8"-16 x
2"
hex
head
or
carriage bolts. Grind a taper on the un-
threaded end of each bolt. Screw the studs into diag-
onally opposite upper and lower tapped holes in the
front of the transmission case.
Install input pulley, axle hubs and wheels. Move
the transmission assembly into place and guide the
shift
levers up between
the
frame rails. Align the
pilot studs with the corresponding holes in the frame
butt plate and push the transmission firmly against
models, remove the fender and seat assembly, the
dust cover and instruction plate located just ahead of
the shift levers.
Remove the cap screws that fasten through the
bottom of the tool box into the top of the transmis-
sion. Remove four cap screws that go through
the
frame butt plate into the front of the transmission.
lower
the
front of the transmission, guide the shift
levers down between the frame rails, and roll
the
transmission and wheel assembly free of the tractor.
Drain lubricant, remove wheels, and clean
the
trans-
mission as necessary before disassembling.
the plate. Install cap screws in the top of the trans-
mission and the open holes at the front and tighten
them until snug.
Remove the pilot studs one at a time, replacing
them with cap screws. Tighten all six cap screws
se-
curely. Connect brake linkage. Install dust cover, in-
struction plate, fender and seat assembly, drive belt,
belt guard, foot rest,
etc.
Fill
the transmission to proper level with
S.A.E.
90
gear oil. Remove support from beneath tractor frame.
Test tractor operation.