1-44
BASIC ENGINE
1-44
REMOVAL AND INSTALLATION (Continued)
2. Fit the main bearings as detailed on Page
1-23 under Fitting Bearings with Plastigage.
3.
After the bearing has been fitted, apply light
coat of engine oil to journal and bearings.
Install the bearing cap. Tighten the cap bolts
to specifications.
4. Repeat the procedure for remaining bear-
ings that require replacement.
5. If the rear main bearing is to be replaced,
remove the rear main bearing cap. Remove
and discard the rear oil seal.
6. Clean rear journal oil seal groove and mat-
ing surfaces of block and rear main bearing
cap.
7. Install the new seal.
8. Seal the rear main bearing cap. After seal-
ing, install the rear main bearing cap and
tighten cap bolts to specifications.
:: .’
1. PRY CRANKSHAFT
,.
FORWARD AND HOLD
2. PRY CAP REARWARD
9. If the thrust bearing cap (No. 3 main bear-
ing) has been removed, install it as follows:
Install the thrust bearing cap with the bolts fin-
ger-tight. Pry the crankshaft forward against the
thrust surface of the upper half of bearing. Hold
the crankshaft forward and pry thrust bearing
cap to rear. This aligns thrust surfaces of both
halves of bearing. Retain forward pressure on
crankshaft. Tighten cap bolts to specifications.
.
IO. Clean the oil pump inlet tube screen. Prime
the oil pump by filling the inlet opening with
oil and rotating the pump shaft until oil
emerges from the outlet opening. Install the
oil pump.
11. Install the oil pan following procedure under
Oil Pan Installation.
12. Fill the crankcase. Start the engine and
check for oil pressure. Operate the engine at
fast idle and check for oil leaks.
3. TORQUE CAP 8OLTS
WHILE HOLDING
CRANKSHAFT FORWARD
CONNECTING ROD BEARING
Removal
1. Follow steps 1
and 2
under Main Bearing
Removal.
2. Turn the crankshaft until connecting rod to
which new bearings are to be fitted is down.
Remove the connecting rod cap. Remove
the bearing inserts from rod and cap.
3. Be sure the bearing inserts and bearing
bore in connecting rod and cap are clean.
Foreign material under inserts will distort
bearing and cause a failure.
4. Clean the crankshaft journal. When replac-
ing standard bearings with new bearings, it
is good practice to fit the bearing to mini-
mum specified clearance.
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