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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 419 (Engine Mechanical - 3.5L (On-Vehicle)) >> Repair Instructions >> Secondary Camshaft Timing Sprocket Replacement - Left Intake >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Position the left secondary camshaft timing components in the following order:
    1. 1.1. Align the intake sprocket drive pin (4) with the single darkened link (3).
    2. 1.2. Align the exhaust sprocket drive pin (1) between the two darkened links (2).
    3. 1.3. Slide the intake camshaft sprocket onto the camshaft aligning the drive pin into the camshaft notch.
  2. Position the primary camshaft drive chain to the intake sprocket.
    Fig 1: Identifying Left Secondary Camshaft Timing Components Position
    G01816788Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the intake camshaft sprocket bolt.

    Tighten 

    1. 3.1. Tighten the camshaft sprocket bolt to 25 N.m (18 lb ft).
    2. 3.2. Use the J 36660-A  in order to tighten the camshaft sprocket bolt an additional 45 degrees.
    Fig 2: Installing Intake Camshaft Sprocket Bolt
    G01816789Courtesy of GENERAL MOTORS CORP.
  4. Remove the locking wire (2) from the left secondary drive chain tensioner (1) allowing the tensioner shoes to expand and apply pressure to the drive chain.
  5. Install the primary camshaft drive chain tensioner. Refer to Primary Camshaft Drive Chain Tensioner Replacement .
    Fig 3: Removing Locking Wire From Left Secondary Drive Chain Tensioner
    G01816790Courtesy of GENERAL MOTORS CORP.
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