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366
FIAT· 850 PASSENGER CARS
- wipe off any oil from the casing cooling fins;
- reset the transmission on the vehicle and
fill
with
oil as described on page 354.
Torque Converter Support.
TO RENEW OIL SEAL
Remove gearbox from vehicle and separate Idro-
convert transmission from gearbox.
Close oil inlet on cover
by
means of plug (4,
fig. 592) and place the Idroconvert transmission on the
bench
with
the converter output shaft facing up-
wards.
Then, proceed as follows:
remove retainer plate (4, fig. 585);
-
withdraw output shaft;
- remove oil seal (2, fig. 595) using a screw-
driver.
Take care not to score the support;
- refit output shaft, complete with spring;
- lubricate a new seal with oil.
Insert oil seal
in position on torque converter support using ser-
vice tool A. 70141 (I, fig. 595);
-
refit retainer plate tightening the two nuts to
10.95 ±1.08 fUbs. (1.5 ±0.15 kgm);
- bend both ends of retainer plate onto the nuts;
- fit Idroconvert transmission to gearbox and re-
place the unit in position on the car;
- check oil level and top-up
I
if necessary, as
described on page 354.
,
I
J
Fig. 595 - Oil seal in position on torque converter support.
1. Service tool A. 70141. - 2. Oil seal. - 3. Torque converter sup-
port. - 4. Torque converter output shatto - 5. Spring.
TO RENEW SUPPORT
To renew torque converter support separate
transmission casing from torque converter, remove
oil pump. retainer plate (4, fig. 585) and support
using a press.
For dismantling, reassembly and adjustments see
page 357 to page 362.
Torque Converter.
The torque converter cannot be interfered with
as it consists of an enclosed welded unit.
If
the engine runs efficiently but performance is
poor
I
the transmission overheats and piCk-up
is
inadequate at take-off - transmission oil level being
normal
~
perfonn stall test as described below:
- couple a revolution counter to the engine so
that readings may be taken from the driver's seat;
- bring engine and transmission temperature up
to nonnal operating temperature;
- apply hand brake, anchor the front wheels
with chocks and depress brake pedal;
- insert top gear and depress accelerator pedal
fully;
- .take an r.p.m. reading.
NOTE· To prevent overheating of the transmis-
$ion, the stall test must not exceed 10 seconds.
If stall speed is found to be lower than 1400 r.p.m.
or higher than 2000 r .p.m. renew the torque con-
verter _
Gear Selector Lever.
Prior to interfering with the lever. check for loose
connections, broken leads and wrong connections.
Connect a test bulb
in
series between one lead
of the gearshift lever and the positive terminal of
a battery.
Connect the other gearshift lever lead
to the negative battery tenninal.
Then, observe
the test bulb which should remain on when gear-
shift lever knob is gripped and go off upon releas-
ing the lever.
Carry out the above test
in
all positions of the
gearshift lever.
IT the bulb stays on at all times,
it
means that the
lead is earthed to some metal part or that the lever
knob is stuck in the closed position; should the
lamp not light at all, the fault could be due to a
defective contact within the lever knob.
In
both cases repair or renew selector lever.
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