MG MGA Twin Cam Workshop Manual page 197

Mga series
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THE BODY
s
close the beater outlet
door.
Fit the trunnion
(IS) and
screw
(22)
to the
door.
Pass
the
inner
cable
from the
'DEMISI' control
through
the trunnion.
Tighten
the
trunnion screw and the
clamp
on the outer cable.
Remove tlte radiator grille and the
blanking
card
from
the air hose connector on the
left-hand
side of the
radiator. Fit
the
angled end
of the
shorter
air
hose (8)
to the
connector, securing the
hose to
the valance
tie-
plate
thro
ugh
the bole provided with
a
cleat,
I
in.
(25·4
mm.)
screw,
nut,
and
washer.
Refit
the
radiator grille.
Remove
the uppermost
plug from
the rear of the
thermostat housing
directly
under the forward
end
of the
radiator header
tank. Assemble
the
copper feed
pipe
and
union
(10)
and
the
joint
washer
(28) to the threaded
hole
in the thermostat housing.
Remove the
setscrew
from
the
header tank
rear
support lug on the exhaust
manifold.
Position
the
feed pipe clip
against the
lug.
and
replace
and
tighten the setscrew.
Connect the longer
rubber
water hose (13)
to the
feed
pipe
using
a
clip (32).
Pass
the
hose
below the brake and
clutch
master cylinder
push-rods (L.H.D. vehicles
only)
and
connect
to
the
water
valve using
a
clip
(32). Secure
the
rubber
water
hose
to the
bulkhead
platform
using the
cleat
(29)
and
the front left-hand brake a
nd
clutch pivot
platform
securing screw (L.H.D.
vehicles)
o
r
the
front
left-hand
cover-plate securing screw
(R.H.D.
vehicles).
Jack
up and support the
front
of the vehicle, and
remove the
right-hand front
wheel. Fit
the
copper
"MGA'
(TWIN
CAM)
H t:AT t:K JUT
.
Part
No.
liV9037
'
Item
No.
~scription
Part
No.
Quantity
J
Heater
assembly
. .
.
.
.
.
.
.
-
.
..
.
.
.
.
AHH5760
I
2
Lever
control
assembly
..
.
.
.
-
..
. -
.
-
--
AH
H553J
l
3
Push-pull
control
'Air'
.
.
.
-
. .
..
. .
.
.
.
.
AHH5786
I
4
Push-pull
control
'
Demist'
. .
.
.
. .
-
.
. .
.
.
. .
AHH5787
I
5
Cable
..
.
.
. .
.
.
.
.
. .
-
.
--
..
.
-
AHH5529
I
6
Air hose
(I!
in.
x
14 in.)
. .
.
-
.
.
. .
..
.
-
..
AHH5427
I
7
Air bose
(I! in.
X25 in.)
. .
.
.
.
.
. .
-
.
. .
.
.
AHH5428
I
8
Air
hose-
s
hort
.
.
. .
. .
. .
. .
-
.
..
. .
AHH5394
I
9
Air
hose-long (4 in.
x
36
in.)
.
.
. .
..
..
.
-
. .
AHH5785
I
10
Copper
pipe and union assembly
(inlet)
. .
.
.
-
.
.
.
. .
AHH5843
I
II
Copper
p
ipe and union
assembly
(outlet)
-
.
.
.
.
.
. .
AH
H5844
I
12
Water
bose-12!
in.
long
.
.
.
.
.
.
-
.
.
-
.
.
. .
AH
H5437
I
13
Water hose-25
in.
long
.
.
. .
.
.
. .
..
.
.
.
.
BHA4089
I
14
Tube-demist
.
.
.
.
.
.
.
.
-
.
.
.
.
.
.
-
AHH5426
2
15
Trunnion
. .
..
. .
.
.
-
.
-
.
. .
. .
. .
14A5753
I
16
Trunnion
. .
.
.
.
.
.
.
.
.
..
.
-
.
-
..
14G6451
I
3
17
Cleat
..
. .
. .
. .
.
.
-
.
. .
.
.
..
.
-
AHH571
4
3
18
Clip-pipe
.
.
.
.
..
.
.
.
.
.
.
.
.
.
.
.
.
BHA4090
2
19
Rubber adaptor
..
. .
.
.
. .
.
.
. .
. .
.
.
AHH5429
2
20
Serew- No.
4
P.K.
..
. .
. .
.
.
-
.
.
.
. .
.
-
AH H5591
6
21
Serew-i in. UNF.
Xi·
in.
.
.
.
.
.
.
. .
-
.
.
.
. .
HZS0405
2
22
Serew-
No
..
6 UNC
...
. .
..
. .
.
.
. .
. .
. .
53K155
4
23
Serew-No.
10
UNF. x
I
in.
. .
.
.
-
.
-
.
.
-
.
-
PMZ0316
3
24
Nut-i
in.
UNF.
.
.
.
.
. .
.
.
-
.
.
.
. .
.
.
FNZ104
2
25
Nut-
No. 10 UNF ...
. .
..
.
.
..
.
-
. .
. .
FNZ103
3
26
Washer-!
in.
.
.
. .
.
.
. .
-
.
.
.
..
.
-
LWZ204
I
2
27
Washer-
2 B.A.
Shakeproof
..
.
.
-
.
.
.
.
.
.
.
17H1638
3
28
Washer-aluminium
.
.
. .
.
.
..
. .
. .
. .
BHA4088
I
2
29
Oeat-
hose
.
.
.
.
.
.
. .
.
.
-
.
--
.
-
.
-
I
BHA4091
I
31
I
O
ip
.
-
..
.
-
.
-
.
.
..
..
.
.
.
.
. .
I
17H486
I
2
32
I
Clip-water hose
. .
.
.
. .
..
-
.
. -
. .
. .
I
301140
4
I
Sealing
gasket
.
.
. .
. .
.
.
. .
-
.
.
.
. .
AHH5253
I
2
I
MOA
(f~~oin
Cam). !$sue 2. 23026
S.5

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