This procedure covers removal and replacement of the engine oil pump on the 2014 Ram 2500 with 6.7L Cummins diesel engine, requiring removal of the timing cover and front engine accessories.

Warnings

Tools required

Parts

• Oil pump assembly × 1 — Cummins OEM or equivalent
• Timing cover gasket × 1 — Use OEM specification
• Oil pan gasket × 1 — Use OEM specification
• Oil pump pickup tube O-ring × 1 — Use OEM specification
• Harmonic balancer bolt × 1 — Replace if torque-to-yield
• Engine oil filter × 1 — Mopar 68197867AA or equivalent
• Oil drain plug crush washer × 1 — Use OEM specification
• Front crankshaft seal × 1 — Use OEM specification
• Coolant × 1 — Mopar OAT Purple

Fluids

• Mopar 5W-20 Synthetic Blend engine oil — 13 qt
• Mopar OAT Coolant (Purple) — 18 qt

Preparation

1. Ensure engine is completely cold to touch
2. Disconnect both battery cables, negative first
3. Raise vehicle on lift or jack stands at all four corners ensuring stability
4. Place oil drain pan under engine and drain engine oil completely
5. Drain cooling system from radiator petcock and lower radiator hose
6. Remove engine cover and air intake system
7. Remove serpentine belt and tensioner
8. Remove radiator and cooling fan assembly for access
9. Install engine support fixture or attach engine hoist to lifting eyes

Procedure

1. 1

   Remove front skid plate and oil pan
   Remove the front skid plate if equipped. Working from underneath, remove all oil pan bolts in a crisscross pattern starting from the outside edges. Carefully pry the oil pan down using plastic pry tools at the corners. Clean all gasket material from both the pan and engine block mating surfaces using a plastic scraper. Inspect the pan for damage or warping.
   Torque spec

   Oil Pan Bolts12 Nm (9 lb-ft)
2. 2

   Remove oil pump pickup tube
   Remove the bolts securing the oil pump pickup tube to the oil pump. Carefully remove the pickup tube from the pump, noting the O-ring seal location. Inspect the pickup tube screen for debris or damage. Clean the screen thoroughly if reusing.
   Torque spec

   Oil Pump Pickup Tube12 Nm (9 lb-ft)
3. 3

   Support engine and remove front motor mounts
   Using the engine hoist or support fixture, take up slight tension on the engine weight. Remove the front engine mounting bolts securing the engine to the frame brackets. Raise the engine approximately 2-3 inches to provide clearance for timing cover removal. Ensure the engine is stable and all connected components have sufficient slack.
   ⚠️Verify engine is securely supported before proceeding. Check that no hoses, wires, or lines are under tension.
   Torque spec

   Mounting Bolts37 Nm (27 lb-ft)
4. 4

   Remove harmonic balancer
   Remove the center bolt from the harmonic balancer (crankshaft). This bolt is typically very tight and may require a breaker bar with extension. Install a harmonic balancer puller and carefully remove the balancer from the crankshaft. Do not pry on the balancer or use excessive force. Mark the balancer orientation to the crankshaft if reusing. Inspect the crankshaft snout for damage.
   ⚠Never strike the harmonic balancer or crankshaft with a hammer. This can damage the crankshaft and internal engine components.
5. 5

   Remove timing cover
   Disconnect any sensors or wiring attached to the timing cover. Remove all timing cover bolts, noting their locations as different lengths may be used in different positions. Carefully pry the timing cover away from the engine block using plastic pry tools at the designated pry points. Remove the cover and front crankshaft seal. Thoroughly clean all gasket material from the timing cover and engine block mating surfaces.
   ℹ️Some coolant may drain from the timing cover water passages. Have a drain pan positioned to catch residual coolant.
   Torque spec

   Cover Bolts22 Nm (16 lb-ft)
6. 6

   Remove oil pump assembly
   Verify the engine is at TDC (top dead center) on cylinder 1 by checking timing marks if visible. Remove the oil pump mounting bolts securing the pump to the engine block. Carefully pull the oil pump assembly straight out from the engine block, disengaging it from the crankshaft drive. Inspect the crankshaft drive gear for wear or damage. Note the orientation and engagement depth of the pump drive.
   ⚠Do not rotate the crankshaft with the oil pump removed, as this may affect timing alignment.
   Torque spec

   Oil Pump Bolts12 Nm (9 lb-ft)
7. 7

   Inspect and prepare new oil pump
   Compare the new oil pump to the old unit to verify correct part. Inspect the crankshaft oil pump drive gear and bushing for wear or damage. Prime the new oil pump by filling it with clean engine oil and rotating the drive gear by hand to distribute oil throughout the pump gears. Verify smooth rotation with no binding. Install a new O-ring on the pump if equipped.
   ℹ️Failure to prime the oil pump can result in initial startup without oil pressure, causing catastrophic engine damage.
8. 8

   Install new oil pump
   Apply a thin coat of clean engine oil to the oil pump drive gear. Carefully align the oil pump with the crankshaft drive, ensuring proper engagement. The pump should slide into place with minimal resistance when properly aligned. Install the oil pump mounting bolts and tighten to specification in a crisscross pattern.
   Torque spec

   Oil Pump Bolts12 Nm (9 lb-ft)
9. 9

   Install oil pump pickup tube
   Install a new O-ring on the oil pump pickup tube, lubricating it with clean engine oil. Insert the pickup tube into the oil pump body, ensuring it is fully seated. Install the pickup tube mounting bolts and tighten to specification.
   Torque spec

   Oil Pump Pickup Tube12 Nm (9 lb-ft)
10. 10

    Install timing cover and front seal
    Install a new front crankshaft seal into the timing cover using a seal driver, ensuring it is seated squarely and to the proper depth. Clean all mating surfaces again to ensure no debris. Position the new timing cover gasket on the engine block, using alignment dowels if present. Carefully position the timing cover onto the engine block, ensuring the crankshaft passes through the seal without damage. Install all timing cover bolts finger-tight, then torque in the specified sequence starting from the center and working outward.
    ⚠Follow the bolt tightening sequence precisely to prevent cover warping and ensure proper seal compression.
    Torque spec

    Cover Bolts22 Nm (16 lb-ft)
11. 11

    Install harmonic balancer
    Clean the crankshaft snout and harmonic balancer bore with brake cleaner. Align the harmonic balancer with the crankshaft according to the marks made during removal, or per manufacturer timing marks. Install the balancer onto the crankshaft, ensuring it seats fully. Install the center bolt and tighten to specification per service manual (torque spec not provided in database).
    ℹ️The harmonic balancer bolt may be torque-to-yield. Consult service manual for proper installation procedure and whether reuse is permitted.
12. 12

    Reinstall oil pan
    Ensure the oil pan and engine block mating surfaces are completely clean and dry. Position the new oil pan gasket on the engine block. Carefully lift the oil pan into position, aligning all bolt holes. Install all oil pan bolts finger-tight, then torque in a crisscross pattern from the center outward to specification.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)
13. 13

    Reinstall engine mounts and lower engine
    Carefully lower the engine back to its normal position using the hoist or support fixture. Align the engine mounting points with the frame brackets. Install the front engine mounting bolts and torque to specification. Remove the engine support equipment once mounts are secured.
    Torque spec

    Mounting Bolts37 Nm (27 lb-ft)
14. 14

    Reinstall remaining components
    Reinstall the radiator and cooling fan assembly. Install the serpentine belt tensioner and belt. Reconnect all sensors and wiring that were disconnected. Install the air intake system and engine cover. Install the front skid plate if equipped. Install new oil drain plug crush washer and install drain plug, torquing to specification.
    Torque spec

    Oil Drain Plug35 Nm (26 lb-ft)
15. 15

    Fill fluids and initial startup
    Fill the engine with the specified amount of fresh engine oil (13 quarts). Install a new oil filter. Refill the cooling system with the specified Mopar OAT Purple coolant (18 quarts). Reconnect battery cables, positive first then negative. Before starting, turn the key to the ON position without cranking and verify the oil pressure gauge shows zero. Crank the engine without starting (disable fuel if possible) for 10-15 seconds to build initial oil pressure. Start the engine and immediately verify oil pressure. Allow to idle and inspect for any leaks around the timing cover, oil pan, and all disturbed connections. Monitor oil pressure and engine temperature.
    ⚠️If oil pressure does not register within 10 seconds of startup, immediately shut down the engine and investigate. Running without oil pressure will cause severe engine damage.

Reassembly

1. All components are installed in reverse order of removal
2. Ensure all electrical connectors are fully seated and secured
3. Double-check all coolant hose connections for proper seating
4. Verify serpentine belt is properly routed and tensioned
5. Bleed cooling system of air after initial warmup

Verification

• Verify oil pressure gauge reads normal operating pressure (typically 10 PSI at idle, 30-60 PSI at operating RPM for Cummins diesel)
• Check for any oil leaks around timing cover, oil pan, and oil pump pickup area with engine running
• Monitor engine temperature to ensure proper cooling system operation
• After initial 20-minute run time, shut down engine, wait 10 minutes, and recheck oil level; top off if necessary
• Perform a test drive and verify normal oil pressure under load and at various RPM ranges
• After test drive, perform final inspection for any leaks with vehicle on lift
• Reset oil life monitor if equipped

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