Crankshaft and Bearing Removal
Special Tools
• | GE 6125-1B Slide Hammer Adapter |
• | EN 49102 Crankshaft Bearing Cap Remover |
For equivalent regional tools, refer to Special Tools .
Crankshaft End Play Measurement
- Place a dial indicator at the crankshaft nose.
- Gently force the crankshaft to the extreme front and rear positions with a pry tool while monitoring the movement of the dial indicator.
- The crankshaft end play should not exceed specifications. Refer to
Engine Mechanical Specifications : LF1 .
- If the specifications are exceeded inspect the thrust bearing thrust OD and the crankshaft thrust wall for wear and/or excessive runout. Refer to
Engine Mechanical Specifications : LF1 .
- Replace the thrust bearing or crankshaft as necessary.
Crankshaft Removal
- Remove the crankshaft bearing cap side bolts.
- Remove the crankshaft bearing cap outer bolts.
- Remove the crankshaft bearing cap inner bolts.
- Remove the crankshaft bearing caps using the GE 6125-1B adapter (1) and EN 49102 remover (2).
- Using two hands, lift the crankshaft straight up from the engine block.
- Place the crankshaft in a secure place.
- Remove the crankshaft key from the nose of the crankshaft, if damaged.
Crankshaft Bearing Removal
- Prepare a piece of cardboard or equivalent, numbered 1-4 for bearing identification. Main bearing journals are numbered from the front of the engine.
- Remove the crankshaft upper bearing halves from the cylinder block. Note the position of the thrust bearing (1) at the number 3 journal (2).
- Place the crankshaft upper bearing halves on the cardboard in the correct positions. Note that the number 3 bearing is the thrust bearing.
- Remove the crankshaft lower bearing halves from the crankshaft bearing caps.
- Place the crankshaft lower bearing halves in the correct positions on the cardboard.
© Copyright Chevrolet. All rights reserved |