Cummins/Onan — Air Cleaner Service (DFZ)
Maintenance
From a Cummins/Onan owner's manual covering: 450 DFW, 450 DM, 500 DM, 600 DFY, 750 DFZ. Check it applies to your exact model before use.
Applies to: Cummins/Onan 450 DFW, Cummins/Onan 450 DM, Cummins/Onan 500 DM, Cummins/Onan 600 DFY, Cummins/Onan 750 DFZ, Cummins/Onan VTA-28-GI engine, Cummins/Onan VT-28-G engine, Cummins/Onan VTA28-G2 engine, Cummins/Onan KTA-38-GI engine
Procedure
- Unsnap four latches holding head, lift off head and remove filter element.
- Remove and discard precleaner cartridge.
- Blow low pressure compressed air through pleated paper cartridge from the inside.
- Hold nozzle at least 1 inch (25 mm) away to avoid damaging the element.
- Replace pleated paper cartridge at every fourth cleaning.
Tools required
- compressed air Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 30 psi/207 kPa
- Nozzle at least 1 inch (25 mm) away
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.