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Home›Repair guides›Maintaining the Battery and Battery Connections

Cummins/Onan — Maintaining the Battery and Battery Connections

For these Cummins/Onan models: 2.0 KY, 2.5 KY, 2.8 KY, 2.8KVFA26100K.

Applies to: Cummins Onan 2 0 Ky, Cummins Onan 2 5 Ky, Cummins Onan 2 8 Ky, Cummins Onan 2 8Kvfa26100K

Before you start

  • Arcing at battery terminals or light switch or other equipment or flames and sparks can ignite battery gas causing severe personal injury. Ventilate battery area before working on or near battery. Wear safety glasses. Do not smoke. Switch trouble light ON / OFF away from battery. Do not disconnect battery cables while genset is running or vehicle battery charging system is on. Always disconnect negative (-) cable first and reconnect it last.

Procedure

  1. Keep the battery case and terminals clean and dry and the terminals tight.
  2. Remove battery cables with a battery terminal puller.
  3. Make sure which terminal is positive (+) and which is negative (-) before making battery connections, always removing the negative (-) cable first and reconnecting it last to reduce arcing.

Tools required

  • Battery terminal puller

Source: manual:981-0153 Onan KV (spec E-K) RV Genset Operator manual (07-2009).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.