COOLING SYSTElM
balance. Only when replacement parts are
26.
TO
FIT
FAN ASSEMBLY TO
fitted will it be necessary to re-balance the
ENGINE
UNIT
unit.
(a)
Fit the WoodruEe key to the crank-
The hub extension is attached to the hub,
shaft and slide on the hub and hub
the latter being keyed to the crankshaft by
extension assembled as described in
six nyloc nuts and bolts and the whole
operations
a,
b and c of
"
To assemble
assembly is secured to the crankshaft by the
fan for balancing," hereafter.
extension bolt, the head of which acts as
(b) Fit the two shims under the head of the
the starting handle dog and on-re-assembly
extension bolt and insert through the
it will be necessary to place
sufficient
centre of hub extension and tighten
shims under the head of the extension bolt
until the abutment of the starting dog
to bring it into such a poaition that when
jaws, incorporated in the head of the
the starting handle is in use compression is
extension bolt, assume a
"
10
to
4
felt just after the handle has left B.D.C. as
o'clock" position to ensure correct
shown in Fig.
37
in Engine Section.
relationship with compression when
the starting handle is in use.
(c) On to one pair of fan securing bolts
feed one lock plate followed by one
25.
TO REMOVE
THE
FAN ASSEMBLY
plain washer per bolt.
FROM ENGINE
UNIT
(d) Offer up the fan assembly
in
such a
(a) Remove the front cowling as described
manner that the hole
in
the web is
in the Body Section
"
N".
over the dimple in the hub extension
face. Fit the extension bolt locking
(b) Remove the radiator as described on
plate
with
the larger diameter plain
page
5.
washer between it and the rubber
(c) Scribe a mark on the balancing plate
bushes. Secure theextension bolt
lock-
and fan assembly to ascertain the front
ing plate with the bolts built up as
of these components for re-assembly.
described
in
operation
(c
above) utilis-
ing the two tappings opposite those
(d)
Turn back the tabs of the locking
with
the
&"
drill hole.
plates and withdraw the four bolts
(e)
The remaining pair of bolts are made
together with lock plates, p!ain washers,
up in a similar manner to those al-
the balance plate
(if
one 1s fitted) and
ready mentioned, but with the balancer
theextension bolt locking plate. The fan
fitted. These bolts are assembled to
assembly, together with split rubber
the remaining tappings
in
the hub ex-
bushes, metal sleeves and larger dia-
tension. Before tightening, the balan-
meter plain washer
can
now be re-
cer is moved until the hole aligns
moved.
with those
in
the fan assembly
;
after
(e)
Remove the extension bolt and shims
tightening the tabs of the- locking
from the hub extension.
plates are turned over.
(f) Replace the radiator and hoses.
(f
)
By tapping the front flange of the hub
(g) Replace the front cowling as de-
extension remove the hub extension,
scribed
in
the Body Section.
hub and fan belt
D~W
from the
crankshaft. Collect ~oodrufie key.
(g) By releasing the tabs of the locking
plates the nuts and bolts
can
be re-
moved. On engines after Engine
No. TS.4145E nyloc nuts and plain
washers were fitted
in
place of lock
plates and plainnuts. The hub extension
can be removed and the hub with-
drawn from the pulley
pressings.
27.
TO ASSEMBLE FAN FOR
BALANCING
Check that the four fan blades riveted to
the fan webs are free from movement. If
for any reason replacement parts have been
fitted the fan unit should be re-balanced.
The dimple
in
hub extension face should
be filled
in
with solder to avoid conhsion
during re-assembly.
To Next Page
Loading...
