This procedure covers the removal and replacement of the rear engine mount on a 2014 Ram 2500 with the 6.7L Cummins diesel engine, requiring engine support and access from underneath the vehicle.

Warnings

Tools required

Parts

• Rear engine mount assembly × 1 — Use OEM specification
• Engine mount hardware kit (if corroded) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine and exhaust system to cool completely (minimum 1 hour)
3. Disconnect negative battery cable to prevent accidental starter engagement
4. Raise vehicle using floor jack and support securely on jack stands at frame rails
5. Remove engine skid plate if equipped
6. Spray all mount bolts with penetrating oil and allow to soak for 10-15 minutes

Procedure

1. 1

   Install engine support
   Position a transmission jack or engine support fixture under the transmission oil pan (use a block of wood to distribute load). Raise jack until it just contacts the pan with minimal upward pressure. The engine should still be resting on all mounts at this point. Ensure the support is stable and centered.
   ⚠Do not use excessive upward force. The support should only stabilize the engine once the mount is removed.
2. 2

   Identify rear engine mount location
   Locate the rear engine mount at the back of the engine block near the bellhousing area. The mount consists of a bracket bolted to the engine block and another bracket attached to the transmission crossmember/frame, with a rubber isolator assembly between them. Note the orientation and position of all components for proper reassembly.
3. 3

   Remove mount through bolt or center fastener
   Using a socket and ratchet, remove the mount through bolt that passes through the center of the rubber isolator assembly connecting the engine-side bracket to the frame-side bracket. This bolt typically runs horizontally. Support the mount components as you remove the fastener to prevent dropping.
   Torque spec

   Mount Through Bolt119 Nm (88 lb-ft)
4. 4

   Remove engine-side mount bracket
   Locate the bolts securing the upper mount bracket to the engine block or bellhousing. Remove these bolts completely using a socket and extension. You may need to slightly raise the transmission jack to relieve pressure on the mount. Remove the engine-side bracket.
   Torque spec

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
5. 5

   Remove frame-side mount bracket
   Locate and remove the bolts securing the lower mount bracket to the transmission crossmember or frame rail. These may be accessed from below or through the frame. Remove all fasteners and lower the frame-side bracket from the vehicle.
   Torque spec

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
6. 6

   Inspect and clean mounting surfaces
   With all mount components removed, thoroughly inspect the mounting surfaces on both the engine block and frame/crossmember for cracks, damage, or corrosion. Use a wire brush to clean all mounting surfaces and bolt threads. Check bolt holes for stripped threads or damage. Inspect removed hardware for damage or excessive corrosion and replace if necessary.
7. 7

   Install frame-side bracket
   Position the new frame-side mount bracket onto the transmission crossmember or frame rail, aligning all bolt holes. Install bolts hand-tight initially to ensure proper alignment. Once all bolts are started, torque to specification in a cross pattern.
   ℹ️Ensure bracket orientation matches the original configuration. The rubber isolator mounting surface should face toward the engine.
   Torque spec

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
8. 8

   Install engine-side bracket
   Position the engine-side mount bracket to the engine block or bellhousing. You may need to adjust the transmission jack height slightly to align bolt holes. Install all bolts hand-tight, then torque to specification in a cross pattern.
   Torque spec

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
9. 9

   Install mount through bolt
   Align the engine-side and frame-side brackets by adjusting the transmission jack as needed. Insert the mount through bolt through the rubber isolator assembly, passing through both bracket mounting points. Install the washer and nut, then torque to specification. The engine weight should now be partially supported by the new mount.
   Torque spec

   Mount Through Bolt119 Nm (88 lb-ft)
10. 10

    Lower engine onto mount and remove support
    Slowly and carefully lower the transmission jack, allowing the engine weight to transfer onto the new rear mount. Once the engine is fully resting on all mounts and there is no load on the jack, remove the transmission jack or support fixture. Rock the engine slightly to ensure it seats properly on all mounts.
11. 11

    Final inspection and reinstall skid plate
    Visually verify all mount bolts are tight and properly torqued. Check that no wires, hoses, or cables are pinched or interfering with the new mount. Reinstall the engine skid plate if equipped. Lower the vehicle from jack stands.

Reassembly

1. Reconnect negative battery cable
2. Perform a final visual inspection of the mount installation from above and below
3. Check that all tools and parts have been removed from the engine bay and undercarriage

Verification

• Start the engine and observe the rear mount for excessive movement or vibration
• With engine running, have an assistant shift through all gear positions (Park, Reverse, Neutral, Drive) while observing mount for proper operation
• Listen for any unusual clunking or knocking sounds that could indicate improper installation
• Test drive the vehicle and monitor for excessive engine movement during acceleration and deceleration
• Perform a final inspection after test drive to ensure all bolts remain tight and properly seated

More procedures for this vehicle