Camshaft Bearing Replacement - Ford COUGAR 1968 Shop Manual

8-84
GROUP 8
- Engine
serts from the block and bearing caps.
3. Remove the connecting rod
bearing inserts from the connecting
rods and caps.
4. If the crankshaft main bearing
journals have been refinished to a de-
finite undersize, install the correct un-
dersize bearings. Be sure the bearing
inserts and bearing bores are clean.
Foreign material under the inserts will
distort the bearing and cause a failure.
5. Place the i p p e r main bearing
inserts in position in the bores with
the tang fitting in the slot provided.
6. Install the lower main bearing
inserts in the bearing caps.
7. Clean the rear journal oil seal
groove and the mating surfaces of
the block and rear main bearing cap.
Preform the new seal by hand to the
approximate radius of the cap.
8. Insert the seal in .the oil seal
groove, seating the center of the seal
first and allowing the the seal to ex-
tend equally on both ends. Press the
seal do-wn firmly with the thumb at
the center of the seal: then press both
ends of the seal into the groove,
working from the ends to the center.
9. Position the seal forming tool
as shown in Fig. 63 and complete
the seal installation. After installa-
to the journals and bearings. Install
a new seal in the rear main bearing
cap and install the rear main bearing
cap by following steps 17 thru 20 un-
der Main Bearing Replacement. In-
stall all the bearing caps, except the
thrust bearing cap (No. 3 bearing).
Be sure that the main bearing caps
are installed in their original loca-
tions. Torque the bearing cap bolts
to s~ecifications.
PLACE Plostigoge FULL
CHECK WIDTH
WIDTH OF JOURNAL OF P'0sfi90ge
ABOUT
I/,
INCH
\
0.002"
FIG.
64-Installing a n d Measuring
Plastigage-Engine o n W o r k S t a n d
13. Install the thrust bearing cap
with the bolts finger-tight.
14. Pry the crankshaft forward
against the thrust surface of the up-
per half of the bearing (Fig. 65).
15. Hold the crankshaft forward
and pry the thrust bearing cap to the
rear (Fie. 65). This will align the
tion. cut the ends of the seal flush.
. -
.
thrust surfaces of both halves-of the
bearing.
16. Retain the forward pressure
on the crankshaft. Tighten the cap
bolts to specifications (Fig. 65).
17. Force the crankshaft toward
the rear of the engine.
18. Check the crankshaft end play
(refer to Part 8-1. Section 1).
19. lnstall new bearing inserts in
the connecting rods and caps. Check
the clearance of each bearing follow-
ing the recommended procedure.
20. After the connecting rod bear-
ings have been fitted. apply a light
coat of engine oil to the journals and
bearings.
21. Turn the crankshaft throw to
FIG.
63-Rear
Oil Seal
t o Block
Installation
10. Carefully lower the crankshaft
into place. Be careful not to damage the
bearing surfaces.
11. Check the clearance of each
main bearing as follows:
Place a piece of Plastigage on the
crankshaft journal the full width of
the journal and about 114 inch off-
center (Fig. 64). Follow steps l l thru
'15 under Main Bearing Replacement.
12. After the ,bearings have been
fitted, apply a light coat of engine oil
-
the bottom of its stroke. Push the
piston all the way down until the rod
bearing seats on the crankshaft jour-
nal.
22. Install the connecting rod cap.
Torque the nuts to specifications.
23. After the piston and connect-
ing rod assemblies have been installed,
check the side clearance between the
connecting rods on each connecting
rod crankshaft journal (Fig. 50).
24. lnstall the timing chain and
sprockets, cylinder front cover and
crankshaft pulley and adapter, fol-
lowing steps I through 8 under Cylin-
der Front Cover and Timing Chain
Installation.
25. Coat the threads of the fly-
wheel retaining bolts with oil-resist-
ant sealer. Position the flywheel on
the crankshaft flange. Install and
torque the bolts to specifications.
On a flywheel for a manual-shift
transmission, use tool 6392-N to
locate the clutch disc. lnstall the
pressure plate. Tighten the retaining
bolts.
26. Clean the oil pan, oil pump
and oil pump screen. Prime the oil
pump by filling either the inlet or
outlet port with engine oil and rotat-
ing the pump shaft to distribute oil
within the housing. Install the oil
pump and oil pan by following the
procedures under Oil Pan and Oil
Pump Installation.
27. Install the oil filter, fuel
pump and connect the fuel lines. In-
stall the alternator, shield and mount-
ing bracket.
On Thermactor engines, install the
air pump and mounting bracket.
28. Install the spark plugs, distrib-
utor cap and spark plug wires. Con-
nect the spark plug wires and high
tension lead.
29. Install the engine in .the ve-
hicle.
CAMSHAFT BEARING
REPLACEMENT
Camshaft bearings are available
pre-finished to size for standard and
0.015-inch undersize journal diam-
eters. The bearings are not inter-
changeable from one bore to an-
other.
I. Remove the camshaft, flywheel
and crankshaft. following the appro-
priate procedures in Section 2 or
Section 4. Push the pistons to the
top of the cylinders.
2. Remove the camshaft rear bear-
ing bore plug (Fig. 42). Remove the
camshaft bearings (Fig. 66).
3. Select the proper size expand-
ing collet and back-up nut and as-
semble on the expanding mandrel.
With the expanding collet collapsed,
install the collet assembly in the
camshaft bearing, and tighten the
back-up nut on the expanding man-
drel until the collet fits the camshaft
bearing.
4. Assemble the puller screw and
extension (if necessary) as shown
and install on the expanding man-
drel. Wrap a cloth around the
threads of the puller screw to pro-
tect the front bearing or journal.