Replace or repair air supply line(s) connecting the air compressor to the air suspension or pneumatic system components on the 2014 Ram 2500 4WD.

Warnings

Tools required

Parts

• Air line (specify length and routing) × 1 — Use OEM specification
• Push-to-connect air line fittings (if damaged) × 2 — Use OEM specification
• Plastic clips and retainers × 4 — Use OEM specification

Preparation

1. Park vehicle on level surface and apply parking brake. Place wheel chocks behind rear wheels.
2. If equipped with air suspension, use dash controls to deflate system to minimum ride height and wait 5 minutes for pressure release.
3. Turn ignition off and disconnect negative battery terminal to prevent air compressor activation during repair.
4. Raise and support vehicle with jack stands at frame rails if accessing undercarriage air lines. Ensure vehicle is stable before working underneath.
5. Identify the specific air line to be replaced by tracing from compressor (typically located near frame rail) to destination component (air spring, air tank, or actuator).
6. Clean work area around air line connections with compressed air or shop vacuum to prevent contamination entering system.

Procedure

1. 1

   Remove wheel and tire if necessary
   If air line routing passes through wheel well or requires access behind wheel, loosen lug nuts while vehicle weight is on ground, then raise vehicle and remove wheel completely. Store wheel safely away from work area.
   Torque spec

   Wheel Lug Nuts183 Nm (135 lb-ft)
2. 2

   Remove wheel well liner or splash shield
   If air line runs behind wheel well liner, remove plastic push clips and mounting fasteners securing inner fender liner. Carefully pull liner away from mounting points to expose air line routing. Note position of all clips for reinstallation.
3. 3

   Disconnect air line at compressor or supply end
   Locate the upstream connection point at the air compressor, distribution block, or air tank. Press the collar on the push-to-connect fitting while pulling the air line straight out. If fitting is corroded, use pneumatic line disconnect tool to avoid damaging fitting. Inspect fitting for cracks or damage.
   ⚠Residual air pressure may be present. Cover connection with shop towel and disconnect slowly to control any air discharge.
4. 4

   Disconnect air line at component end
   Follow air line to destination component (air spring, height sensor, or actuator valve). Press collar on push-to-connect fitting and pull line straight out. Cap or cover open fitting immediately to prevent dirt ingress into component.
5. 5

   Remove air line from routing clips and frame brackets
   Release air line from all plastic routing clips, P-clips, and frame mounting brackets along its path. Note exact routing path, proximity to other components, and clip positions. Take photos if needed for reference during installation. Remove any damaged clips for replacement.
6. 6

   Inspect fittings and ports
   Examine both connection ports and fittings for damage, cracks, or debris. Use wire brush to clean threads on any threaded fittings. Blow out ports with compressed air if available. Replace any damaged push-to-connect fittings before installing new line.
7. 7

   Route new air line following OEM path
   Beginning at compressor end, route new air line through exact same path as old line, maintaining minimum 2-inch clearance from exhaust components, sharp edges, and moving suspension parts. Ensure line does not contact frame welds, control arm pivot points, or areas subject to road debris impact.
8. 8

   Secure air line in routing clips
   Install new plastic clips or retainers where needed. Snap air line into all mounting clips along routing path, ensuring line is held firmly but not kinked or compressed. Line should have slight slack to accommodate suspension travel without pulling tight.
9. 9

   Connect air line at compressor end
   Cut air line end square if needed using sharp blade. Push line firmly into push-to-connect fitting at compressor or supply point until it bottoms out and locks. Tug on line to verify secure connection - line should not pull free with moderate force.
10. 10

    Connect air line at component end
    Ensure line end is cut square and free of debris. Push line into fitting at air spring, valve, or actuator until fully seated. Verify connection security by pulling on line. Check that line routing allows full suspension articulation without binding or stretching.
11. 11

    Reinstall wheel well liner and wheel
    If removed, reinstall wheel well liner or splash shield using all original push clips and fasteners. Position liner to prevent contact with air line. Reinstall wheel and tire, hand-tightening lug nuts in star pattern.
    Torque spec

    Wheel Lug Nuts183 Nm (135 lb-ft)
12. 12

    Lower vehicle and perform final torque
    Lower vehicle to ground. Torque wheel lug nuts to specification in star pattern. Reconnect negative battery terminal.
    Torque spec

    Wheel Lug Nuts183 Nm (135 lb-ft)

Reassembly

1. Verify all routing clips are secured and air line has proper clearance throughout suspension travel range.
2. Double-check both air line connections are fully seated and locked into push-to-connect fittings.
3. Ensure wheel well liner is properly reinstalled and does not contact air line during wheel turning.

Verification

• Start vehicle and allow air compressor to pressurize system. Listen for air leaks at both connection points and along line routing.
• Apply soapy water solution to all connections and look for bubbles indicating air leaks. Repair any leaks immediately.
• If equipped with air suspension, use dash controls to cycle system through all ride height settings and verify proper operation without leaks.
• Test drive vehicle over varied terrain and verify air suspension functions normally with no warning lights or abnormal compressor cycling.
• Recheck air line routing after test drive to ensure line has not shifted position or contacted any components during suspension movement.

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