Caterpillar — Generator Set Vibration - Test/Record
Maintenance
From a Caterpillar owner's manual covering: C3.3, C3.3 Rental Generator Set, C4.4, C4.4 Rental Generator Set, D4D1-Up, GLE1-Up, N3X1-UP, N4R1-Up, N4X1-Up, X3B1-UP, XYC1-Up, XYD1-Up. Check it applies to your exact model before use.
Applies to: Caterpillar C3.3, Caterpillar C4.4
Before you start
- Vibration may cause coupling wear, loose fittings, fatigue, cracks and cracked insulation
Procedure
- Check for vibration damage on the coupling, generator bearings, stator output leads, protective sleeving, insulation and connections.
- Record a vibration plot when the generator set is installed.
- Update the vibration plot yearly, when the genset is moved and when the engine is overhauled.
- Record the vibration of the bearing at the generator bearing bracket.
- If vibration exceeds the EDS limits, check the alignment.
Tools required
- Vibration analyzer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Refer to Data Sheet LEKQ4023 "Linear Vibration"
Full service-parts list: Caterpillar C3.3 →, Caterpillar C4.4 →
Source: Caterpillar 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.