How to Install a 5.9 Cummins Timing Cover

Written by james marshall
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The six-cylinder, 5.9-litre Cummins diesel engine is most common in light to medium trucks, such as Dodge Ram pickup trucks made from 1989 to 1998. It produces a large amount of low-end torque and has better fuel economy than a larger eight-cylinder engine. The 5.9-litre Cummins engine uses a timing chain to drive the camshaft with the crankshaft, which requires a cover. The procedure for removing the timing chain cover is the same for all vehicles with a 5.9-litre Cummins engine.

Skill level:
Challenging

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Things you need

  • Socket wrench set
  • Puller for crankshaft damper
  • Shop cloth
  • RTV sealer
  • Lithium grease
  • Torque wrench
  • Tool C-3688

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Instructions

  1. 1

    Disconnect the water pump and power steering pump from the engine compartment with a socket wrench. Disconnect the pulley from the crankshaft and pull the crankshaft damper from the crankshaft with a suitable puller.

  2. 2

    Detach the fuel lines from the fuel pump with a socket wrench and disconnect the fuel pump. Remove the front mounting bolts for the oil pump. Disconnect the mounting bolts for the timing chain and remove the timing chain.

  3. 3

    Clean the mounting surface for the timing chain cover with a shop cloth and install a new gasket to the cover. Apply a bead of RTV sealer 1/8 inch wide to the oil pan gasket.

  4. 4

    Tighten the mounting bolts for the timing chain cover to 30 foot-pounds with a torque wrench. Center the gasket on the oil pan and tighten the mounting bolts for the oil pan to 17 foot-pounds.

  5. 5

    Coat the seal for the crankshaft damper with lithium grease and mount the damper to the crankshaft. Press the crankshaft damper to the crankshaft with Tool C-3688 and tighten the mounting bolt for the crankshaft damper to 135 foot-pounds with a torque wrench. Install the crankshaft pulley to the crankshaft with a socket wrench.

  6. 6

    Connect the fuel pump with a socket wrench and attach the fuel lines to the fuel pump. Install the water pump and power steering pump.

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