Ford COUGAR 1968 Shop Manual page 335

PART 8-2
-
170 And 200 Six
resistant or water-resistant sealer. seal from the block and rear main on a 170 Six engine or No. 5 bear-
CRANKSHAFT
bearing cap. ing on a 200 Six engine). Be sure
2.
Remove the main bearing in- that the main bearing caps are in-
REMOVAL
serts from the block and bearing stalled in their original locations.
caps. Torque the bearing cap bolts to
- .
3. Remove the connecting rod specifications.
The crankshaft and parts bearing inserts from the connecting
12.
Install the thrust. bearing cap
are shown in Fig. 54 or 55.
1.
Remove the oil level dipstick.
rods and caps. with the bolts finger-tight.
2. Remove the accessory drive
4. Clean the rear journal oil seal 13. Pry the crankshaft forward
pulley (if so equipped). Remove the
grooves. Install a new rear journal against the thrust surface of the
crankshaft damper retaining bolt
oil seal in the block (Fig. 56) and upper half of the bearing (Fig. 58).
and washer. Remove the crankshaft
rear main bearing cap (Fig. 38). After 14. Hold the crankshaft forward
vibration damper using tool T58P-
installation, cut the ends of the seals and pry the thrust bearing cap to the
63 16-A.
flush. rear (Fig. 58). This will align the
5. Apply a thin coating of oil re-
thrust surfaces of both halves of the
3' the cylinder front sistant sealer to the rear main bear- bearing.
cover and air conditioning idler pul-
ing cap at the rear of the top mating
15. Retain the forward pressure
ley assembly (if
equipped). Re-
surface (Fig. 38). DO not apply seal-
on the crankshaft. Torque the cap
move the cover gasket.
er to the area forward of the oil
bolts to specifications (Fig. 58).
4. Check the timing chain deflection;
slinger groove.
then remove the timing chain and
16. Force the crankshaft toward
6. If the crankshaft main bearing the of the engine.
sprockets by following steps 4 thru
journals have been refinished to a
17.
Install a dial indicator so that
under and definite undersize, install the correct the contact point rests against the
Timing Chain Removal.
undersize bearings. Be sure the bear-
crankshaft flange and the indicator
5. Invert the engine
On
the
ing inserts and bearing bores are
axis is parallel to the axis
stand. Fkmove the flywheel.
clean. Foreign material under the in-
( ~ i ~ . 59).
the oil pan and gasket. Remove the will distort the bearing and
oil pump.
18. Zero the dial indicator. Push
cause a failure.
6.
Make sure all bearing caps
the crankshaft forward and note the
7. Place the upper main bearing
reading on the dial,
(main and connecting rod) are inserts in position in the bores with
marked so that they can be installed
the tang fitting in the slot provided.
19.
If the end play exceeds speci-
in their original locations. Turn the
8. Install the lower main bearing
fications, replace the thrust bearing.
crankshaft until the connecting rod
inserts in the bearing caps.
If the end play is less than the mini-
from which the cap is being removed
9. Carefully lower the crankshaft
mum limit, inspect the thrust bear-
is down. Remove the connecting rod
into place. B~ careful not to damage
ing faces for scratches, burrs, nicks,
cap. Push the connecting rod and
the bearing surfaces.
or dirt. If the thrust faces are not
piston assembly up in the cylinder. 10. Check the clearance of each defective or dirty, they probably
Repeat for the remaining caps. main bearing. Place a piece of Plasti- were not aligned properly. Install
7.
Remove the main bearing caps.
gage on the crankshaft journal the
the thrust bearing and align the faces
8. Carefully lift the crankshaft full width of the journal and about following the recommended proced-
out of the block
SO
that the thrust
114 inch
off
center (Fig. 57). ~ 0 1 1 0 ~
ure (steps 12, 13, 14, and 15). Check
bearing surfaces are not damaged.
steps 11 thru 13 under Main Bear-
the end play which should be within
Handle the crankshaft with care to ing ~ ~ ~ l ~ ~ ~ specifications.
avoid possible fracture o r damage
11.
After the bearings have been
20.
Install new bearing inserts in
to the finished surfaces.
fitted, apply a light coat of engine
the connecting rods and caps. Check
INSTALLATION
oil to the journals and bearings. In- the clearance of each bearing fol-
stall all the bearings caps, except the lowing the procedure under Con-
1.
Remove the rear journal oil thrust bearing cap (No. 3 bearing necting Rod Bearing Replacement.
GEAR
6375
FLYWHEEL
6312
M A I N BEARING CAPS
AlSS1-F
FIG.
54-Typical
170 Six
Crankshaft and Related Parts