How should the crankshaft be cleaned and inspected for damage on Chevrolet Astro?

Using solvent clean the crankshaft and if possible air dry it, always ensure that the holes are brushed with stiff brush and flushed with solvent. Using a thread mike or feeler gauge, measure the journal diameters of all main and connecting rod bearings for amount of ovality or taper and look for signs of scoring, pits or cracks, etc. Examine the rest of the crankshaft for any cracks or other damage. Use a micrometer to take the actual measurements of the diameter of the main and connecting rod journals and compare the same with the standard dimensions where by taking measurements at different positions around the circumference of each journal in order to check for taper or being out of round. Further, also take measurements at each end of the journal, at a plane perpendicular to the crank throw to detect taper. If the journals are badly scored, undersized, oval or excessively worn, have the crankshaft reconditioned by an automotive machine shop and, if reconditioning is done, use the correct size bearing inserts. Last but not the least, check on the main and the rod bearing inserts.

Genuine Chevrolet Astro Crankshaft

Crank Shaft

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Chevrolet Astro Engine Crankshaft
Part Number: 12555637
$492.97 MSRP: $815.92
You Save: $322.95 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Crankshaft, Engine; Crankshaft
- Replaces: 12558256
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2005 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Crankshaft KIT
Part Number: 89018195
$585.12 MSRP: $934.92
You Save: $349.80 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Crankshaft Kit, Remanufacture(Includes Bearings) ; Crankshaft, Engine; Crankshaft
- Replaces: 10224880, 10144146
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1998 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Crankshaft (Machining)
Part Number: 10044541
Product Specifications
- Other Name: Crankshaft, (Machining) ; Crankshaft, (Mchg); Crankshaft
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1990 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro Engine Crankshaft
Part Number: 10224877
Product Specifications
- Other Name: Crankshaft Asm; Crankshaft
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1986-1994 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L

Chevrolet Astro Crankshaft

The Chevrolet Astro Crankshaft converts the straight up and down movement of the pistons into a smooth spin, which eventually turns the wheels. By rotating inside the engine block, the Crankshaft utilizes offset crank throws to allow each connecting rod to swing, which changes reciprocation into rotation to feed the transmission, driveshafts and axles. Major versions in this van line have been tough cast iron units for everyday power, but higher output trims from Chevrolet gain a forged steel Crankshaft for extra strength under heavier horsepower loads. Whichever style is fitted, the part is precision made to last the life of an Astro engine, but slack oil changes or any debris will scour journals, widen clearances and cause the Crankshaft to knock. If severe vibration develops, owners may be faced with the skilled task of swapping it, a job rated difficult because it involves pulling the block, removing numbered main bearing caps and putting every piece back on in proper order. Consistent maintenance makes a Chevrolet Astro run smoothly, allowing its engine heart to depend on the original Crankshaft for countless miles.

Each OEM Chevrolet Astro Crankshaft we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Astro Crankshaft Parts Questions & Experts Answers

Engine Crankshaft
12555637
Q: How should the crankshaft be cleaned and inspected for damage on Chevrolet Astro?
A:
Using solvent clean the crankshaft and if possible air dry it, always ensure that the holes are brushed with stiff brush and flushed with solvent. Using a thread mike or feeler gauge, measure the journal diameters of all main and connecting rod bearings for amount of ovality or taper and look for signs of scoring, pits or cracks, etc. Examine the rest of the crankshaft for any cracks or other damage. Use a micrometer to take the actual measurements of the diameter of the main and connecting rod journals and compare the same with the standard dimensions where by taking measurements at different positions around the circumference of each journal in order to check for taper or being out of round. Further, also take measurements at each end of the journal, at a plane perpendicular to the crank throw to detect taper. If the journals are badly scored, undersized, oval or excessively worn, have the crankshaft reconditioned by an automotive machine shop and, if reconditioning is done, use the correct size bearing inserts. Last but not the least, check on the main and the rod bearing inserts.