Cummins/Onan — Battery Cable Connections at Genset
Installation · Battery cables
From a Cummins/Onan service manual covering: 5.5 HGJAA, 5.5 HGJAB, 5.5 HGJAC, 6.5 HGJAA, 6.5 HGJAB, 6.5 HGJAC, 7.0 HGJAA, 7.0 HGJAB, 7.0 HGJAC. Check it applies to your exact model before use.
Applies to: Cummins/Onan HGJAA, Cummins/Onan HGJAB, Cummins/Onan HGJAC
Before you start
- Accidental starting of the genset can cause severe personal injury or death. Do not connect the starting battery until so instructed in STARTUP.
Procedure
- Terminate the battery cables with ring terminals sized for 5/16 inch screws.
- Connect the cables to the genset as shown in Figures 5-10 and 5-11.
- Secure the insulating boot on the positive (+) terminal and tie it to the battery cable with the tie-wrap.
- Torque the positive (+) cable terminal to 4.5 lb-ft (6 N-m).
- Torque the negative (−) cable screw to 8 lb-ft (11 N-m).
Specs & values
- Positive (+) terminal torque 4.5 lb-ft (6 N-m)
- Negative (−) screw torque 8 lb-ft (11 N-m)
Full service-parts list: Cummins/Onan HGJAA →, Cummins/Onan HGJAB →, Cummins/Onan HGJAC →
Source: Cummins/Onan service 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.