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Home >> Isuzu >> 1983 >> Impulse Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.8L 4-CYL - VIN [B],1.9L [A], 1.95L 4-CYL - VIN [A] >> Engine Identification >> Timing Chain & Sprockets >> Inspection

Timing Chain & Sprockets: Inspection

  1. Check camshaft and crankshaft sprockets for wear or damage. If crankshaft sprocket replacement is required, remove sprocket using a puller.
  2. Using tension measuring gauge, check timing chain for wear. Using 22 lbs. (10 kg) force, pull chain and measure stretch over a length of 40 chain links. See Fig 1 .
  3. The standard distance is 15" (381 mm). If distance measured exceeds 15.2" (385 mm), replace chain. Check automatic adjuster, tensioner guide rail, and chain guide for wear. Replace as necessary.
  4. Make sure that tensioner guide rail and automatic adjuster move freely on mounting pins. Pins and clips are replaceable.
  5. Ensure that oil jet in chain guide mounting is not plugged. If oil jet is removed, install with oil jet pointing toward the crankshaft.
Fig 1: Timing Chain Stretch Test
G81927