Crankshaft and Bearings Removal

WARNING: This page is about a different car, the 2003 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 6125- 1B Slide Hammer. See Special Tools and Equipment .
J 41348 Main Bearing Cap Puller. See Special Tools and Equipment .

IMPORTANT: This engine has side bolts on all of the main caps except the rear cap. These bolts must be removed to service the caps.

Remove the crankshaft main bearing cap side bolts.
Remove the crankshaft main bearing cap bolts

Fig 1: Removing Crankshaft Main Bearings, Caps & Bolts
Courtesy of GENERAL MOTORS CORP.

NOTE: Main bearing caps are press fit. Remove the caps carefully for service. J 41348 has been designed to work with J 6125-B in order to prevent damage to the bearing and cap. J 41348 MUST be installed properly into the bolt holes of the caps and J 6125-B attached to J 41348 in order to properly remove the main cap without damaging the bearing or the cap. Any deviation from this procedure may cause damage to the cap and the bearing and may result in future engine damage.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install J 41348 into the crankshaft main bearing cap bolt holes.
Tighten

Tighten the bolts on J41348 to 12 N.m (100 lb in).
Install J 6125-1B to J 41348.
Use J6125-1B to remove the crankshaft main lower bearing caps.

Fig 2: Installing Main Bearing Cap Puller Into Crankshaft Main Bearing Cap Bolt Holes
Courtesy of GENERAL MOTORS CORP.
Remove the crankshaft.
Remove the upper main bearings from the engine block.

Fig 3: Removing Crankshaft, Caps & Upper Main Bearings
Courtesy of GENERAL MOTORS CORP.