Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYSYSTEM SPECIFICATIONSMAIN BEARING CLEARANCES
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Main Bearing Clearances
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Main Bearing Clearances
| Journal Diameter | 2.2487-2.2497 | ||
| Journal Taper | Production | MAX 0.00030 | |
| Service | MAX 0.0010 | ||
| Journal Out Of Round | Production | MAX 0.0002 | |
| Service | MAX 0.0010 | ||
| Bearing Clearance | Journal # 1 | Producion | 0.0008-0.0020 |
| Service | 0.0010-0.0020 | ||
| Journals #2,#3,#4 | Production | 0.0011-0.0023 | |
| Service | 0.0010-0.0250 | ||
| End Play | 0.002-0.008 | ||
| Journal Diameter | #1 | 2.4488-2.4495 | |
| #2 and #3 | 2.4485-2.4494 | ||
| #4 | 2.4480-2.4489 | ||
| Journal Out Of Round | Production | MAX 0.0002 | |
| Service | MAX 0.0010 | ||
| Journal Taper | Production | MAX 0.0003 | |
| Runout | MAX 0.0010 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.