LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2021 >> Cherokee Altitude, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (3.2L Engine (Service Information)) >> Valve Timing >> Chain And Sprockets, Timing >> Removal

Chain And Sprockets, Timing: Removal

WARNING: This page is about a different variant/trim than selected.
GC0144190Courtesy of CHRYSLER GROUP, LLC
CAUTION:

The magnetic timing wheels (1) must not come in contact with magnets (pickup tools, trays, etc.) or any other strong magnetic field. This will destroy the timing wheels ability to correctly relay camshaft position to the camshaft position sensor.

CAUTION:

When the timing chains are removed and the cylinder heads are still installed, DO NOT rotate the camshafts or crankshaft without first locating the proper crankshaft position. Failure to do so will result in valve or piston damage.

NOTE:

The Variable Valve Timing (VVT) assemblies (Phasers) and Oil Control Valves (OCVs) can be serviced without removing the engine timing cover. Refer to ASSEMBLY, VARIABLE VALVE TIMING, PHASER / OIL CONTROL VALVE, REMOVAL .

  1. Remove the air cleaner housing assembly and upper intake manifold. Refer to MANIFOLD, INTAKE, REMOVAL .
  2. Remove both cylinder head covers. Refer to COVER(S), CYLINDER HEAD, REMOVAL .
  3. Remove the spark plugs. Refer to 3.2L .
  4. Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
  5. Drain the cooling system. Refer to DRAINING .
  6. If removing the oil pump chain or primary chain, remove the oil pan. Refer to PAN, OIL, REMOVAL .
  7. Remove the engine timing cover. Refer to COVER(S), ENGINE TIMING, REMOVAL .
    GC0144234Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Take this opportunity to measure timing chain wear. Refer to ENGINE/VALVE TIMING - STANDARD PROCEDURE .

    GC0144142Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    When aligning timing marks, always rotate engine by turning the crankshaft. Failure to do so will result in valve or piston damage.

  8. Rotate the crankshaft clockwise (as viewed from the front) to place the number one cylinder piston at top-dead-center on the exhaust stroke by aligning the dimple (4) on the crankshaft with the block/bearing cap junction (5).
  9. While maintaining this alignment, verify that the ARROWS  (2) on the left side cam phasers point toward each other and are parallel to the cylinder head cover mounting surface (3) and that the right side cam phaser ARROWS  (7) point away from each other and the SCRIBE LINES  (9) are parallel to the cylinder head cover mounting surface (8).
    GC0207766Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    The phaser markings (1 and 3) could align with either an external or internal chain link. Either alignment is acceptable as long as there are twelve chain pins between the markings.

  10. There should be twelve chain pins (2) BETWEEN  the exhaust cam phaser triangle marking (1) and the intake cam phaser circle marking (3) as viewed from either the front or rear of the cam phasers.
    CAUTION:

    Always reinstall timing chains so that they maintain the same direction of rotation. Inverting a previously run chain on a previously run sprocket will result in excessive wear to both the chain and sprocket.

  11. Mark the direction of rotation on the following timing chains using a paint pen or equivalent to aid in reassembly:
    • Left side cam chain
    • Right side cam chain
    • Oil pump chain
    • Primary chain
    GC0144144Courtesy of CHRYSLER GROUP, LLC
  12. Reset the right side cam chain tensioner by pushing back the tensioner piston and installing Tensioner Pin (special tool #8514A, Pins, Tensioner) (1).
    GC0144145Courtesy of CHRYSLER GROUP, LLC
  13. Reset the left side cam chain tensioner by lifting the pawl (1), pushing back the piston (2) and installing Tensioner Pin (special tool #8514A, Pins, Tensioner) (3)

    Refer to ENGINE/VALVE TIMING - STANDARD PROCEDURE .

    GC0144153Courtesy of CHRYSLER GROUP, LLC
  14. Disengage the oil pump chain tensioner spring (3) from the dowel pin (2) and remove the oil pump chain tensioner (1).
  15. Remove the oil pump sprocket T45 retaining bolt (4) and remove the oil pump sprocket (5) and oil pump chain (6).
    GC0144983Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    It may be necessary to rock the camshaft slightly (a few degrees) with a wrench (4) when installing the camshaft phaser lock.

  16. Install the (special tool #10202-1, Lock, Camshaft/Phaser, Right Side) (1) with the tool number facing up.
  17. Loosen, but do not remove, the exhaust oil control valve (3) and the intake oil control valve (2).
  18. Remove the (special tool #10202-1, Lock, Camshaft/Phaser, Right Side) (1).
  19. Remove the oil control valve (2) from the right side intake cam phaser.
  20. Pull the right side intake cam phaser from the camshaft and remove the right side cam chain.
  21. If required, remove the oil control valve (3) and pull the right side exhaust cam phaser from the camshaft.
    GC0144993Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    It may be necessary to rock the camshaft slightly (a few degrees) with a wrench (4) when installing the camshaft phaser lock.

  22. Install the (special tool #10202-2, Lock, Camshaft/Phaser, Left Side) (1) with the tool number facing up.
  23. Loosen, but do not remove, the exhaust oil control valve (2) and the intake oil control valve (3).
  24. Remove the (special tool #10202-2, Lock, Camshaft/Phaser, Left Side) (1).
  25. Remove the oil control valve (2) from the left side exhaust cam phaser.
  26. Pull the left side exhaust cam phaser from the camshaft and remove the left side cam chain.
  27. If required, remove the oil control valve (3) and pull the left side intake cam phaser from the camshaft.
    GC0144147Courtesy of CHRYSLER GROUP, LLC
  28. Reset the primary chain tensioner (5) by pushing back the tensioner piston and installing Tensioner Pin (special tool #8514A, Pins, Tensioner) (3). Remove two T30 bolts (4) and remove the primary chain tensioner.
  29. Remove the T30 bolt (1) and the primary chain guide (2).
    GC0144141Courtesy of CHRYSLER GROUP, LLC
  30. Remove the idler sprocket T45 retaining bolt (2) and washer (3).
  31. Remove the primary chain, idler sprocket and crankshaft sprocket as an assembly.
    GC0144140Courtesy of CHRYSLER GROUP, LLC
  32. If required, remove two T30 bolts (6) and the left side cam chain tensioner (5).
  33. If required, remove two T30 bolts (4) and the left side cam chain guide (2) and tensioner arm (1).
    GC0144139Courtesy of CHRYSLER GROUP, LLC
  34. If required, remove two T30 bolts (4) and the right side cam chain tensioner (3).
  35. If required, remove three T30 bolts (2) and the right side cam chain guide (1) and tensioner arm (6).
  36. Inspect all sprockets and chain guides. Replace if damaged.
scientia non olet · About LEMON Manuals