Cummins/Onan — Vibration Damper - Checking
Maintenance
From a Cummins/Onan owner's manual covering: K1800, K2000E, K38, K50, KT38, KTA 50 G3, KTA-50G3, KTTA50, KtA38, KtA50, KttA38. Check it applies to your exact model before use.
Applies to: Cummins/Onan K38, Cummins/Onan K50, Cummins/Onan KTA-50G3, Cummins/Onan KTA38, Cummins/Onan KTA50
Before you start
- Do not repair or balance a viscous damper in the field.
Procedure
- Clean the exterior of the damper with solvent.
- Inspect mounting flange for cracks.
- Inspect housing for dents, bulges, or leaks.
- Remove paint and measure thickness at four locations, 90 degrees apart.
- Replace damper if damaged or thickness exceeds specification.
- Replace damper after 24,000 hours regardless of measurement.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Houdaille max thickness 65.38 mm [2.574 in]
- Readings must not vary more than 0.25 mm [0.010 in]
Full service-parts list: Cummins/Onan K38 →, Cummins/Onan K50 →, Cummins/Onan KTA-50G3 →, Cummins/Onan KTA38 →, Cummins/Onan KTA50 →
Source: Cummins/Onan owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.