How to service and repair the timing chain on Chevrolet Astro?

Begin the Timing Chain servicing by putting the crankshaft balancer key in the keyway while making sure the key runs parallel to the crankshaft and a minimal incline exists. Use the j 5590 installer (J 5590) to position the keyway of the crankshaft sprocket correctly with the crankshaft balancer key before installation. First position the crankshaft at 12 o'clock mark so you can install the camshaft sprocket that should be aligned at 6 o'clock position followed by the installation of the camshaft Timing Chain. Check that the crankshaft sprocket points straight up at 12 o'clock and the camshaft sprocket faces downward at 6 o'clock. Using a hammer when installing the camshaft sprocket onto the camshaft can dislodge the expansion cup plug in the camshaft rear bearing hole therefore this method should be avoided. Secure the camshaft sprocket bolts with specifications setting torque at 25 nm (18 ft. Lbs.). Begin by positioning the keyway of the reluctor ring with the balancer key of the crankshaft. Then use tool j5590 to push the ring onto the crankshaft until it reaches the sprocket completely.

OEM Chevrolet Astro Timing Chain

Engine Timing Chain

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3 Timing Chains found

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Chevrolet Astro Timing Chain Part Number: 14087014
$55.75 MSRP: $94.91
You Save: $39.16 (42%)
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Product Specifications
- Other Name: Chain, Engine Timing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Astro | Base, CL, CS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Timing Chain Part Number: 12458911
$56.00 MSRP: $87.74
You Save: $31.74 (37%)
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Product Specifications
- Other Name: Chain Kit, Engine Timing; Timing Gear Set; Timing Drive Package
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Timing Chain Part Number: 10128485
$43.02 MSRP: $64.53
You Save: $21.51 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Chain, Engine Timing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1999 Chevrolet Astro | Base, CL, CS, LS, LT | 6 Cyl 4.3 L GAS

Chevrolet Astro Timing Chain

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The Chevrolet Astro Timing Chain plays a very significant role of ensuring that the camshaft and the crankshaft rotate in harmony so as to offer the optimal valve timing needed for performance of the Astro vehicle. Fixed at the front of the engine, the Timing Chain must be lubricated for proper working condition though it is more common in high output engines. Chevrolet Astros and other specific models have had metal timing chains and these have become favored especially since the rise in the 1990s and from such there is rarely need for replacements as is the case with rubber timing belts. Timing chains are usually quite dependable, however they can have problems originating from malfunctioning lubrication or issues with the tensioner as well as chain sprockets grabbing harms, signs and symptoms may consist of a rattling from the belly of the engine. Essentially, a short chain drive is desirable in pushrod engines to reduce noise and wear and hence the Chevrolet Astro design.

Chevrolet Astro Timing Chain Parts and Q&A

Timing Chain
12458911
Q: How to service and repair the timing chain on Chevrolet Astro?
A:
Begin the Timing Chain servicing by putting the crankshaft balancer key in the keyway while making sure the key runs parallel to the crankshaft and a minimal incline exists. Use the j 5590 installer (J 5590) to position the keyway of the crankshaft sprocket correctly with the crankshaft balancer key before installation. First position the crankshaft at 12 o'clock mark so you can install the camshaft sprocket that should be aligned at 6 o'clock position followed by the installation of the camshaft Timing Chain. Check that the crankshaft sprocket points straight up at 12 o'clock and the camshaft sprocket faces downward at 6 o'clock. Using a hammer when installing the camshaft sprocket onto the camshaft can dislodge the expansion cup plug in the camshaft rear bearing hole therefore this method should be avoided. Secure the camshaft sprocket bolts with specifications setting torque at 25 nm (18 ft. Lbs.). Begin by positioning the keyway of the reluctor ring with the balancer key of the crankshaft. Then use tool j5590 to push the ring onto the crankshaft until it reaches the sprocket completely.