Cummins/Onan — Stator Removal and Reassembly
Repair & overhaul · generator stator
From a Cummins/Onan service manual covering: 5.5 HGJAA, 5.5 HGJAB, 5.5 HGJAC, 5.5 HGJAD, 5.5 HGJAE, 5.5 HGJAF, 7.0 HGJAA, 7.0 HGJAB, 7.0 HGJAC, 7.0 HGJAD, 7.0 HGJAE, 7.0 HGJAF. Check it applies to your exact model before use.
Applies to: Cummins/Onan 5.5 HGJAD, Cummins/Onan 5.5 HGJAE, Cummins/Onan 7.0 HGJAD, Cummins/Onan 7.0 HGJAE
Before you start
- Brushes can be damaged if brush block is not removed before end bell
Procedure
- Remove two-piece control enclosure and disconnect stator leads.
- Remove the brush block.
- Remove generator/engine bracket and the four generator through bolts.
- Pull end bell straight up, then stator straight up.
- Reassemble in reverse, align stator leads through base slot.
- Relubricate bearing bore with molybdenum disulfide paste.
Specs & values
- Torque generator through bolts to 8 lb-ft (11 N-m)
Full service-parts list: Cummins/Onan 5.5 HGJAD →, Cummins/Onan 5.5 HGJAE →, Cummins/Onan 7.0 HGJAD →, Cummins/Onan 7.0 HGJAE →
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.