Months ago,we share the process for rear engine mount diagnostics for Freightliner new Cascadia.Today here is a guide on front engine mount diagnostics guide.
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Procedures:
1.Park the vehicle on a level surface, shut down the engine, and apply the parking brakes. Chock the tires.
2.Are the noise vibration and harshness (NVH) levels observed higher than normal when the engine is running?
YES → Go to next step.
NO → Engine mounts are in good condition. No replacement required.
3.Are all fasteners torqued as per specifications?
YES → Go to next step.
NO → Torque the fasteners as per specifications.Go to step 2 to verify.
4.Inspect the gap between the crossmember and the rebound cushion.
Is the gap between crossmember and rebound cushion greater than 6 mm?
YES → Replace the front engine mounts.
NO → Go to next step.
5.Inspect the front mounts for the conditions listed below.
Cracks greater than 5 mm on flat metal surface.
Cracks greater than 8 mm in the rubber.
Warped or cracked cups.
Are any of the above conditions observed?
YES → Replace the front engine mounts.
NO → Engine mounts are in good condition. No replacement required.