What are the essential steps to take before removing the piston and connecting rod assemblies on Chevrolet Astro?

It is important before pulling the piston and connecting rod assemblies that you have to first relieve the cylinder head(s), oil pan and finally the oil pump. First ensure that you eliminate the entire top ridge of the cylinder by carefully applying a ridge reaming tool according to the manufacturer's guidelines else the pistons break. After that inclined the engine in upside-down position with the crankshaft at the upward position to remove the cylinder ridges. Prior to disconnecting the connecting rods look at the end clearance using feeler gauges to make sure the the clearance is removed; if the end clearance is beyond the service limit then new connecting rods may be needed. Also, make sure that bolting connecting rods and caps are marked, and if they are not marked, one ought to use a small centre punch to do so. Slowly turn out each of the connecting rod cap nut until they can be unscrewed by the hand, then unbolt the number one connecting rod cap and the bearing insert but be careful not to let the bearing insert fall off. During piston removal, the crankshaft journal and the cylinder wall are very sensitive, slip a short length of plastic or rubber hose over each of the connecting rod cap bolts. The connecting rod/piston assembly should now be pushed out through the top of the engine; the use of the wooden hammer handle can also be of assist when doing the upper bearing insert. If there is such resistance, then check whether all the ridge material has been provided fully. Do this for the remainder of the cylinders, and after their removal, replace the connecting rod caps and bearing inserts into their intended rods, tightening the cap nuts only enough with your fingers so as not to mar the bearings.

Genuine Chevrolet Astro Piston

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Chevrolet Astro Piston Asm,(W/ Pinion)(Std)
Part Number: 88894280
$112.27 MSRP: $177.43
You Save: $65.16 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: PISTON, Engine Piston; Piston
- Replaces: 12522850
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Piston & Pinion,(Std) (600 Gram)
Part Number: 12353354
$60.27 MSRP: $121.54
You Save: $61.27 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro Piston Asm,(W/ Pinion)(0.127 Mm Outside)
Part Number: 88894281
$101.77 MSRP: $205.22
You Save: $103.45 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PISTON, Engine Piston
- Replaces: 12533560
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro PISTON, Engine Piston
Part Number: 10101714
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro PISTON, Engine Piston
Part Number: 10181389
Product Specifications
- Other Name: Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1992 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro PISTON, Engine Piston
Part Number: 10181390
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1992 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro PISTON, Engine Piston
Part Number: 12361240
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1992 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro PISTON
Part Number: 12361488
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Piston Asm
Part Number: 10101486
Product Specifications
- Other Name: PISTON, Engine Piston; Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro Piston & Pinion Asm(Std)
Part Number: 14099017
Product Specifications
- Other Name: PISTON, Engine Piston; Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Piston & Pinion Asm(High Limit)
Part Number: 14099025
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Piston Asm
Part Number: 10101488
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
View related parts
Chevrolet Astro Piston Asm
Part Number: 10112444
Product Specifications
- Other Name: PISTON, Engine Piston; Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro Piston & Pinion,(.020 "Oversize)(600 Gram)
Part Number: 12351869
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro Piston & Pinion Assembly, .254 Oversize
Part Number: 10043034
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
View related parts
Chevrolet Astro Piston Asm
Part Number: 10112445
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
View related parts
Chevrolet Astro Piston & Piston Pinion Asm(.030 Outside)
Part Number: 10181392
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1992 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
View related parts
Chevrolet Astro Piston & Pinion Asm (.030 O.S)
Part Number: 14099028
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Piston & Pinion Assembly, (C)
Part Number: 10101711
Product Specifications
- Other Name: PISTON, Engine Piston; Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro Piston & Pinion(.030" Oversize)(600 Gram)
Part Number: 12351870
Product Specifications
- Other Name: PISTON, Engine Piston
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L

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Chevrolet Astro Piston

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Chevrolet Astro Piston Parts Questions & Experts Answers

Piston Asm,(W/ Pinion)(Std)
88894280
Q: What are the essential steps to take before removing the piston and connecting rod assemblies on Chevrolet Astro?
A: It is important before pulling the piston and connecting rod assemblies that you have to first relieve the Cylinder Head(s), oil pan and finally the oil pump. First ensure that you eliminate the entire top ridge of the cylinder by carefully applying a ridge reaming tool according to the manufacturer's guidelines else the pistons break. After that inclined the engine in upside-down position with the Crankshaft at the upward position to remove the cylinder ridges. Prior to disconnecting the connecting rods look at the end clearance using feeler gauges to make sure the the clearance is removed; if the end clearance is beyond the service limit then new connecting rods may be needed. Also, make sure that bolting connecting rods and caps are marked, and if they are not marked, one ought to use a small centre punch to do so. Slowly turn out each of the connecting rod cap nut until they can be unscrewed by the hand, then unbolt the number one connecting rod cap and the bearing insert but be careful not to let the bearing insert fall off. During piston removal, the crankshaft journal and the cylinder wall are very sensitive, slip a short length of plastic or rubber hose over each of the connecting rod cap bolts. The connecting rod/piston assembly should now be pushed out through the top of the engine; the use of the wooden hammer handle can also be of assist when doing the upper bearing insert. If there is such resistance, then check whether all the ridge material has been provided fully. Do this for the remainder of the cylinders, and after their removal, replace the connecting rod caps and bearing inserts into their intended rods, tightening the cap nuts only enough with your fingers so as not to mar the bearings.