Cummins/Onan — Install Radiator Pipes
Installation · Radiator tubes and hoses
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DQKB, Cummins/Onan DQKC, Cummins/Onan QSK60 engine
Procedure
- Install the J/W outlet tube bracket to the skid using two M8 x 25 mm screws.
- If necessary, loosen clamp to adjust engine water inlet tube (LTA) so outlet faces the radiator.
- Slide radiator hose all the way on both ends of each tube; apply lubricant (WD40 or soap/water).
- Open hose clamps so they slip over radiator hose and onto mating tubes on engine and radiator.
- Move tube into position and slide hose over top mating tube; tighten clamps.
- Slide radiator hose over bottom mating tube and tighten clamps.
- Tighten clamps on both ends of all tubes to 90-105 inch-lbs (10-12 N-m).
- Install the tube clamp on J/W outlet tube to the bracket installed in Step 1.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Hose clamp torque 90-105 KuduParts $29.00 inch-lbs (10-12 Amazon eBay FridayParts $169.30 N-m)
Full service-parts list: Cummins/Onan DQKB →, Cummins/Onan DQKC →
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.