ALLIS-CHALMERS
press
fit on the
shaft
and can be dis-
assembled with
a
suitable puUer.
Cau-
tion: After reinstalling pulley
end
bearing bracket
(5),
spacer
(6) and
pulley
(7),
press
on the fan end
bear-
ing bracket
(3) and fan
blade assem-
bly until
a
center-to-center measure-
ment
of 11%
inches
is
obtained
be-
tween bracket mounting holes.
All Except Model
G
133.
On B, C, CA, and RC
models,
to
R&R the fan
blades assembly,
it is
necessary
to
first remove
the
radiator.
"
134.
On we, WD,
WD45,
and WF
equipped with ball bearing type water
pumps (ball type
has no
lubrication
fitting), the R&R
of fan
blades necessi-
tates
a
special procedure
as
follows:
Unbolt
fan
from pump
hub and
drop
fan
to
bottom
of
radiator shell.
Dis-
connect lower hose
and
detach pump
from engine.
Fan
unit
can now be
removed from bottom
of
radiator shell.
On
we, and WF
models equipped
with plain bearing water pumps
(pro-
vided with
a
lubrication fitting),
the
Fig.
AC53A
—
Models
B, C,
CA,
and RC
water pump
as-
sembly. When pressing
im-
peller
on
pump shaft, allow
1/16 inch impeller clearance
as shown
at (A).
A. Impeller Clearance
1.
Rear cover
2.
Pump body
8. Carbon thrust
washer
4.
Seal retaining
snap ring
5. Pump shaft and bearing
assembly
6. Pulley lock bolt
7.
Fan
hub flange
8.
Fan
retaining
cap
screw
9. Bearing lock wire
10.
Pulley flange
(front)
11.
Pulley flange
(rear)
12.
Rear cover gasket
13.
Impeller
U. Seal aasemblx
14
Fig.
AC53B—Ecirty production models
WC, and WF
were
equipped with
a
plain bushing water pump. Bushing type
pumps
con be
identified
by an
external lubrication fitting
for bushings
(4 & 17).
1,
Pulley lock bolt
4.
Rear bushing
6. Rear cover sasket
6. Impeller
7. Thrust washer drivins
pin
8. Impeller
pin
9. Spring reUiner
10.
Thrust spring
11.
Shaft seal
12.
Thrust washer
14.
Flange gasket
15.
Pulley flange (rear)
16.
Pulley flange (front)
17.
Front bushing
Paragraphs 133-136
fan blades unit
can be
removed from
the tractor without disturbing
the
pump.
WATER PUMP
135.
R&R PUMP. On B, C, CA, and
RC,
to K&R the pump, it is necessary
to first remove the radiator shell and
the radiator.
On WC, WD, WD45, and WF, to R&R
pump,
remove hood, fan belt, and fan
retaining cap screws. Allow fan to rest
at bottom of shell. Disconnect radiator
hose.
Remove pump to engine cap
screws and lift pump up and out to-
wards left side of tractor. Remove fan
from bottom of shell.
136.
OVERHAUL B-C-CA-RC, To
disassemble pump, remove fan blades,
pulley, and rear cover. Attach a suit-
able puller to tapped holes in impeller
(13—Fig. AC53A), and pull impeller
from shaft (5). Carbon thrust washer
(3) and seal assembly (14) can be re-
moved from impeller after removing
snap ring (4) from impeller. Shaft and
bearing assembly (5) and fan hub
flange (7) can be pressed out of front
of pump body after removing bearing
lockwire (9). Shaft can be pressed out
of fan hub.
Surface of pump body contacted by
the carbon thrust washer must be
smooth and true. When pressing Im-
peller on shaft, do not collapse seal;
allow approximately 1/16 inch at "A".
Fan hub flange should be pressed on
10
!?VA
5*""
'•*"*®'' P'o^'ucfion models
WC and WF, and
all
WD and
WD45 engines
are
equipped wirK
a
ball bearing
type pump. When pressing impeller
on
pump shaft, allow
1/16 inch impeller clearance
as
shown
af (A>,
A.
1/16
inch impeller clearance
7. Fan hub
flange
1.
Rear cover
».
Bearing snap rinx
2.
Pump body
lo.
Pulley flange (front)
3.
Carbon thrust washer
11.
Pulley flange (rear)
4.
Seal snap ring
12.
Rear cover gasket
6. Pump shaft^A bearing
18.
Impeller
6. Pulley lock bolt
14.
Seal assembly
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