Table of Contents
Advertisement
46
Main Specifications (continued).
FIAT - 850 PASSENGER CARS
DESCRIPTION
in
nun
-
Squaleness of flywheel resting face to crankshaft
centerline:
-
Max. Qut-ot-true with dial indicator plunger
set laterally some 1
7/ 32 "
(31 nun) apart from
crankshaft rotation axis
.0010
0.025
Flywheel:
-
parallel relationship of driven plate face to
crankshaft mounting face: max. out-of-true
.004
0.1
-
squareness of above faces to rotation axis:
max. out-af-true .
.004
0.1
Checking and Grinding Crankpins and
Journals.
The crankshaft must show no signs of cracking
at crankpins and jownals as well as crankarms:
otherwise the crankshaft should be replaced lest
shattering may result
in
operation.
If
light scores are noticed
I
reface
by
a very fine
carborundum stone.
In case of deep notches or
if
journals are found
to be out-of-round in excess of .002" (0.05 nun),
regrind journals having mind to fitting clearances
and the undersize range of replacement bearings.
In fact crankpins and journals should be ground,
depending on the state of wear, so that
final
diam-
eters are conforming tabulated data and crankann
fillet radii are as shown in figures 66-67-68 and 69.
Next fit bearing undersizes at each journal so
to keep fitting clearance
within limits
tabulated
under • Main Specifications •.
Install the crankshaft on grinding machine using
tool A. 60080 which should be placed as shown
in fig. 65.
Fig. 65 • Grinding main bearing journals on grinding machine.
1. Grinding wheel. • 2. Journal holder. ·3. Clamp.• 4. Slide.• 5. Tool A. 60080. - 6. Journal.
Advertisement
Table of Contents
