Perkins — Cooling System - Drain
Maintenance
From a Perkins service manual covering: 402D-05, 403D-07, 403D-11, 403D-15, 404D-22, 404D-22T, 404D-22TA. Check it applies to your exact model before use.
Applies to: Perkins 402D-05, Perkins 403D-07, Perkins 403D-11, Perkins 403D-15, Perkins 404D-22, Perkins 404D-22T, Perkins 404D-22TA
Before you start
- Do not drain the coolant while the engine is still hot and the system is under pressure.
- To prevent frost damage, ensure that all the coolant is removed from the engine.
Procedure
- Ensure that the vehicle is on level ground.
- Remove the filler cap of the cooling system.
- Remove the drain plug (1) from the side of the cylinder block to drain the engine.
- Open the tap or remove the radiator drain plug to drain the radiator.
- Flush the cooling system with clean water.
- Fit the drain plugs and the filler cap. Close the tap or connect the radiator hose.
- Fill the cooling system with an approved antifreeze mixture.
- Operate the engine for a short period to circulate oil and coolant.
Full service-parts list: Perkins 402D-05 →, Perkins 403D-07 →, Perkins 403D-11 →, Perkins 403D-15 →, Perkins 404D-22 →, Perkins 404D-22T →, Perkins 404D-22TA →
Source: Perkins 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.