IN-VEHICLE SERVICE
Connecting Rod Bearings
The connecting rod bearings are a selective fit to provide for necessary operational clearances and oil
pressure. Refer to Section 03-00 to measure bearing clearances and selection of the proper bearing insert.
NOTE: This operation is performed easiest with engine out of the vehicle. However, it can be
performed with the engine in the vehicle.
R
emoval
1. Disconnect ground cable at battery and set aside.
2. Remove all six spark plugs (12405) to allow for uninhibited crankshaft rotation.
3. Raise vehicle.
4. Remove oil pan (6675) as outlined in this section.
5. Remove oil pump (6600) if required as outlined in this section.
6. Turn connecting rod (6200) until crankshaft (6303) from which the bearings are to be removed is at
the lowest point of travel.
7. Loosen retaining nuts and remove from cap. Place retaining nuts so that they may be reinstalled on
the same rod bolt.
8. CAUTION: Use extreme care to not scratch crankshaft journal.
Tap cap with a plastic mallet to separate from connecting rod. Carefully remove cap from crankshaft.
If lower bearing remained on crankshaft, carefully grasp both sides and remove (oil acts as an
adhesive between two precision fitted components).
9. NOTE: Protective caps may be made from rubber fuel line.
Install protective rubber caps onto connecting rod bolts to protect crankshaft journal from bolt threads.
10. Push piston (6108) up into cylinder bore to provide clearance for removal. Remove upper connecting
rod bearing (6211).
11. Inspect connecting rod bearings, crankshaft journal and connecting rod bearing surfaces for damage
or wear.
Section 03-01B: Engine, 3.0L V-6 1997 Aerostar, Ranger Workshop Manual
file://C:\TSO\tsocache\VDTOM_5368\SVK~us~en~file=SVK31B31.HTM~gen~ref.HTM
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