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Operation: Overview Dodge Neon II

Mechanical 2 illustrations ~312 words

The camshaft is driven by the crankshaft via drive sprockets and belt. The camshaft has precisely machined lobes to provide accurate valve timing and duration.

Scheme 57

Scheme 57: STANDARD PROCEDURE - CAMSHAFT END-PLAY
Scheme 57: STANDARD PROCEDURE - CAMSHAFT END-PLAY
  1. Measure camshaft end play using the following procedure: Mount dial indicator C-3339 or equivalent, to a stationary point on cylinder head. (Scheme 57) Using a suitable tool, move camshaft to rearward limits of travel. Zero the dial indicator. Move camshaft forward to limits of travel and read dial indicator. End play travel: 0.13-0.33 mm (0.005-0.013 in.).

Scheme 58

Scheme 58: REMOVAL
Scheme 58: REMOVAL
  1. Disconnect and isolate negative battery cable.
  2. Disconnect positive battery cable. Remove the battery. Refer to «BATTERY & CHARGING SYSTEMS»(ref-177669) ).
  3. Disconnect the IAT sensor electrical connector. (Refer to «FUEL SYSTEMS»(ref-142492-S39306046262002080600000) ).
  4. Disconnect the following: Air intake duct at throttle body Throttle cables TPS and IAC connectors Make-up air hose at air cleaner housing
  5. Remove the air cleaner housing assembly. (Refer to «AIR CLEANER HOUSING»(ref-177391-S10665184012005060100000) ).
  6. Remove the battery tray. Refer to «BATTERY & CHARGING SYSTEMS»(ref-177669) ).
  7. Remove the front timing belt cover, timing belt, and tensioner. (Refer to «TIMING BELT AND SPROCKETS»(ref-177391-S13434889052005052700000) ).
  8. Remove the camshaft sprocket and rear timing belt cover. (Refer to «TIMING BELT COVER(S)»(ref-177391-S15538948382005052700000) ).
  9. Remove the cylinder head cover. (Refer to «CYLINDER HEAD COVER»(ref-177391-S15136192452005060100000) ).
  10. Mark rocker arm shaft assemblies so that they are installed in their original positions.
  11. Remove rocker arm and shafts assembly. (Refer to «ROCKER ARM/HYDRAULIC LASH ADJUSTER ASSEMBLY»(ref-177391-S12683786902005060100000) ).
  12. Drain cooling system below heater hose level.
  13. Disconnect the ECT sensor electrical connector.
  14. Disconnect hoses from heater supply and return tubes.
  15. Remove heater tube support bracket bolts at rear of cylinder head.
  16. Remove PDC attaching screws and reposition for camshaft removal clearance.
  17. Remove camshaft sensor and camshaft target magnet.
  18. Carefully remove camshaft from the rear of cylinder head. Reposition heater tubes and PDC for camshaft clearance. (Scheme 58)
  19. Remove the camshaft seal. (Refer to «CAMSHAFT OIL SEAL»(ref-177391-S36772559682005060100000) ).

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