Cummins/Onan — High Mount Installations
Installation · genset
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKAJ, Cummins/Onan HDKAK
Procedure
- The maximum fuel pump lift is 36 inches (914.4 mm); use an additional fuel pump if mounted more than 36 inches above the fuel source.
- Provide 2.5 inches (63.5 mm) minimum clearance to the sides and rear, and 0.25 inch (6.35 mm) clearance to the front.
- Fabricate risers to raise and support the genset above the compartment floor.
- Fabricate ducting to exhaust hot air from the genset; use foam or gasket material between the duct and the base of the set.
- Route the exhaust tailpipe down and underneath the vehicle and terminate at least 1 inch (25.4 mm) beyond the perimeter of the vehicle.
Specs & values
- Maximum fuel pump lift: 36 inches (914.4 mm)
- Minimum compartment dimensions: Width 24.98 inches (634.5 mm), Length 41.35 inches (1050.3 mm)
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKAJ →, Cummins/Onan HDKAK →
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.