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TIM
TIM, SERVICE MANAGER
Category: Dodge
Satisfied Customers: 6149
Experience:  DODGE SERVICE MANAGER- 20 + YEARS
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1998 Dodge Intrepid: timing chain..the right cam as you..marks..Liter

Customer Question

There is a painted arrow on the secondary timing chain cams along with a factory produced mark/indention...its only on the right cam as you face the engine...what would those painted marks be in reference to timing or are they significant at all? Its a 1998 Dodge Intrepid with a 2.7 Liter
Submitted: 6 years ago.
Category: Dodge
Expert:  TIM replied 6 years ago.

TIMING CHAIN AND SPROCKETS

REMOVAL

  1. Remove upper intake manifold. Refer to procedure in this section.
  2. Remove cylinder head covers, crankshaft damper, and timing chain cover. Refer to procedures in this section

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

  3. Align crankshaft sprocket timing mark to mark on oil pump housing Timing Mark Alignment The mark on oil pump housing is 60° ATDC of #1 cylinder

    CAUTION: When the timing chain is 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 and/or piston damage.

  4. Remove primary timing chain tensioner from right cylinder head Primary Timing Chain Tensioner
  5. Remove camshaft position sensor from left cylinder head Primary Timing Drive System
  6. Remove chain guide access plug from left cylinder head Primary Timing Drive System

    NOTE: When camshaft sprocket bolts are removed, the camshafts will rotate in a clockwise direction.

  7. Starting with the right camshaft sprocket, remove the sprocket attaching bolts. Remove camshaft damper and sprocket Primary Timing Drive System
  8. Remove left side camshaft sprocket attaching bolts and remove sprocket Primary Timing Drive System
  9. Remove lower chain guide and tensioner arm Primary Timing Drive System
  10. Remove the primary timing chain.

INSTALLATION

  1. Inspect all sprockets and chain guides. Replace if worn. Refer to crankshaft sprocket, for removal and installation procedures in this section.
  2. If removed, install right and left side short chain guides Primary Timing Drive System Tighten attaching bolts to 28 N·m (250 in. lbs.)
  3. Align crankshaft sprocket timing mark to the mark on oil pump housing Primary Timing Chain Marks

    NOTE: Lubricate timing chain and guides with engine oil before installation.

  4. Place left side primary chain sprocket onto the chain so that the timing mark is located in-between the two (plated) timing links Primary Timing Chain Marks
  5. Lower the primary chain with left side sprocket through the left cylinder head opening

    NOTE: The camshaft sprockets can be allowed to float on the camshaft hub during installation.

  6. Loosely position left side camshaft sprocket over camshaft hub.
  7. Align timing (plated) link to the crankshaft sprocket timing mark Primary Timing Chain Marks
  8. Position primary chain onto water pump drive sprocket.
  9. Align right camshaft sprocket timing mark to the timing (plated) link on the timing chain Primary Timing Chain Marks and loosely position over camshaft hub.
  10. Verify that all chain timing (plated) links are properly aligned to the timing marks on all sprockets Primary Timing Chain Marks
  11. Install left side lower chain guide and tensioner arm Primary Timing Drive System Tighten attaching bolts to 28 N·m (250 in. lbs.)

    NOTE: Inspect oil ring on chain guide access plug before installing. Replace O-ring as necessary.

  12. Install chain guide access plug to left side cylinder head Primary Timing Drive System Tighten plug to 20 N·m (15 ft. lbs.)

    NOTE: To reset the primary timing chain tensioner, engine oil will first need to be purged from the tensioner Timing Chain Tensioner - Oil Purging

  13. Purge oil from timing chain tensioner using the following procedure:
    1. Place the check ball end of tensioner into the shallow end of Special Tool 8186 Timing Chain Tensioner - Oil Purging
    2. Using hand pressure, slowly depress tensioner until oil is purged from tensioner Timing Chain Tensioner - Oil Purging
  14. Reset timing chain tensioner using the following procedure:
    1. Position cylinder plunger into the deeper end of Special Tool 8186 Timing Chain Tensioner - Resetting
    2. Apply a downward force until tensioner is reset Timing Chain Tensioner - Resetting

      NOTE: If oil was not first purged from the tensioner, use slight finger pressure to assist the center arm pin of Special Tool 8186 to unseat the tensioner's check ball.

      CAUTION: Ensure the tensioner is properly reset. The tensioner body must bottom against the top edge of Special Tool 8186. Failure to properly perform the resetting procedure may cause tensioner jamming.

  15. Install the reset chain tensioner into the right cylinder head Primary Timing Chain Tensioner
  16. Position tensioner retaining plate and tighten bolts to 12 N·m (105 in. lbs.) Primary Timing Chain Tensioner
  17. Starting at the right cylinder bank, insert a 3/8" square drive extension with a breaker bar into intake camshaft drive hub. Rotate camshaft until the camshaft hub aligns to the camshaft sprocket and damper attaching holes. Install the sprocket attaching bolts and tighten to 28 N·m (250 in. lbs.) Primary Timing Chain Marks
  18. Turn the left side camshaft by inserting a 3/8" square drive extension with a breaker bar into intake camshaft drive hub and rotate camshaft until the sprocket attaching bolts can be installed. Tighten sprocket bolts to 28 N·m (250 in. lbs.) Primary Timing Chain Marks
  19. Rotate engine slightly clockwise to remove timing chain slack, if necessary.
  20. To arm the timing chain tensioner: Use a flat bladed pry tool to gently pry tensioner arm towards the tensioner slightly Timing Chain Tensioner Arming Then, release the tensioner arm. Verify the tensioner is armed (extends)
  21. Install the timing chain cover, crankshaft damper, and cylinder head covers.
  22. Install camshaft position sensor and connect electrical connector.
  23. Install upper intake manifold. Refer procedure in this section

    NOTE: After installation of a reset tensioner, engine noise will occur after initial start-up. This noise will normally disappear within 5 - 10 seconds.

 

Customer: replied 6 years ago.
This references the Primary timing chain and sprockets I'm wanting to know about the secondary timing chain and why there are painted arrows on the intake and exhaust sprockets and they are both a few degrees off from the original timing mark...and these arrows are only on the right side as you look at the engine, there are none on the left
Expert:  TIM replied 6 years ago.
Expert:  TIM replied 6 years ago.

ENGINE TIMING - VERIFICATION

Correct timing is critical for the NON free-wheeling designed, 2.7L engine. Engine timing can be verified by using the following procedures:

  1. Remove cylinder head covers. Refer to procedures outlined in this section.
  2. Rotate engine until number one cylinder is at TDC on the EXHAUST stroke.
  3. View the intake camshaft sprocket timing mark. The mark should be 90° from the cylinder head cover sealing surface Engine Timing on both right and left cylinder banks.
  4. Count chain pins from the mark on the intake camshaft towards the exhaust camshaft. Engine is timed correctly when there are 12 chain pins between the timing marks on the intake camshaft and exhaust camshaft Engine Timing
  5. If marks are not correctly aligned, proceed to Camshafts, Timing Chain and Sprockets, Removal and Installation procedures
Customer: replied 6 years ago.
thank you sir
Expert:  TIM replied 6 years ago.
i am glad to help -- let me know if you need anything else, thanks, XXXXX XXXXX click the accept button and positive feedback would be greatly appreciated

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