SHIM 5M9624 - Caterpillar

Failure to keep the condensate drain valve functional can cause severe damage to the engine.
Illustration 1 g03161198
Typical example
(1) Valve
(2) Plunger
(3) Valve seatThe engine boost pressure forces the plunger or plungers to move down to the valve seat. Plungers must close against the seat at a pressure of 2.8 kPa (0.4 psi). The absence of boost pressure when the engine is stopped allows the plunger or plungers to rise to the open position. The open position allows condensation from the aftercooler to drain out.The plunger or plungers must be able to move freely to close the system when the engine is running. Plungers must be able to move freely to allow condensation to drain from the aftercooler when the engine is stopped. Residue from normal engine operation could cause plungers to stick.
Remove the valve from the adapter. Check the valve to determine if the plunger or plungers moves freely. If the plunger does not move easily, clean the valve with solvent.
Reassemble the aftercooler condensate drain valve. See Specifications Manual, SENR3130, "Torque Specifications" for more information on the proper torques.