Detroit Diesel — Reverse-Flush the Radiator
Maintenance
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Apply air gradually. Do not exert more than 30 psi (207 kPa) air pressure; too great a pressure may rupture a radiator tube.
Procedure
- Remove the radiator inlet and outlet hoses and replace the radiator cap.
- Attach a hose at the top of the radiator to lead water away.
- Attach a hose to the bottom of the radiator and insert a flushing gun.
- Connect the gun water hose to the water outlet and the air hose to compressed air.
- Turn on the water; when full, turn on the air in short blasts.
- Continue flushing until only clean water is expelled.
Tools required
- Flushing gun Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Do not exert more than 30 psi (207 kPa) air pressure
Source: Detroit Diesel 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.