Parggraphs 166-167
ALLIS-CHALMERS
screws,
it will relieve the spring pres-
sure and facilitate removal.
The long hub of the lined plate (1—
Fig.
AC74) should be installed away
from the flywheel. Using 3 pieces of
5/16 inch key stock in lieu of the lined
plate,
install the unit to the flywheel
and check the release lever height.
Adjust release levers, by means of the
screws (S) in the levers, until a
measurement of 1 13/16± 0.015 is ob-
tained from friction face of flywheel
to release bearing contacting surface
of each lever.
If the clutch shaft or clutch shaft
bearing need overhauling, it will be
necessary to remove the engine and
clutch housing from the transmission
as outlined in paragraph 65.
Models RC-WC-WF
Rockford clutch model 9RM with
R4409 cover, is used in model RC
tractors.
WC tractors prior to number
WC74330 and WF tractors prior to
number 1337 used Rockford clutch
model lORR with R1716-2 cover. Sub-
sequent WC and WF tractors use
clutch model lORM with R4259 cover.
Clutch shaft pilot bearing is lubri-
cated by a wick in the crankshaft rear
main bearing journal. Refer to Crank-
shaft, paragraph 97, for wick removal
procedure.
166.
ADJUSTMENT. Method of ad-
justment is the same as for models
B,
C, and CA, as outlined in paragraph
160.
167.
R&R CLUTCH UNIT. Remove
engine from tractor as in paragraph
63 or 64. With engine removed,
clutch can be removed by removing
cap screws (3—Fig. AC75) retaining
clutch cover to flywheel. Reinstall
driven plate with oil deflector of same
toward the transmission.
SEGMENT LINING TYPE. Each side
of the driven plate has two Vs inch
thick segments alternated by two
5/32 inch thick segments. The Vs inch
thick segments of one side are riveted
to the 5/32 inch thick segments on the
other side. Install rivets with the heads
in the Vs inch thick segments.
FULL CIRCLE LINING TYPE. Rivet
molded lining to flywheel side of
driven plate and woven lining to the
pressure plate side.
Install driven plate with oil deflec-
tor toward transmission.
20
Pig, AC76~Some
WD ond
WD45 tractors
are
equipped with
a
Rockford
10 AM
vntf
which
has a
segment type lined disc. ftfvef$
ore
installed with their heads
in the
Vk
inch
segments. Some
ftC,
WC,
and
WF
models
are
similar.
1.
Lever pivot pin
2.
Lever spring
3.
Screw seat
4.
Driven disc
5.
5/32 inch lining
7. Pressure plate
8. Pressure spring
9. Spring cup
11.
Release lever
18.
Adjusting screw
20.
% inch lining
u
12
3 4
q'
22
21
19
16
\
14
\ 12
17
15 13
23
16
fig.
AC75-Models RC, WC,
ond
WF
clutch, clutch housing assembly. Models WD
and
WD45
are
similar with
the
exception
of
clutch
/f (8); refer
to
Fig,
AC84
for
difference.
1.
Clutch housing
2.
Clutch cover plate
3.
Cap screw
4.
Release bearing
6. Clutch shifter
6. Shifter bracket
7. Clutch shaft oil seal
8. Clutch shaft
9. Belt pulley drive gear
10.
Snap ring
11.
Snap ring
12.
Shifter spring
13.
Inspection plate
14.
Shifter fork
15.
Shifter fork set screw
16.
Shifter fork shaft
17.
Shifter clip
18.
Ad justing screw
19.
Oil deflector
20.
Driven plate
21.
Flywheel
22.
Shaft pilot bearing
28.
Control rod
24.
Shifter fork shaft arm
25.
Set screw
50
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