VALVE GP-CHECK 1769369 - Caterpillar

Illustration 1 g02500916
Aftercooler with flame arrestor and drain valve
(1) Flame arrestor
(2) Aftercooler drain valve
(3) Plunger for the drain valve
(4) Valve seat for the drain valve The engine boost pressure forces the plunger to move down to the valve seat. The plunger must close against the seat at a pressure of 27.5 kPa (4 psi). When the engine is stopped, the absence of boost pressure allows the plunger to rise to the open position allowing condensation from the aftercooler to drain.The plunger must be able to move freely in order to close the system when the engine is running. The plunger must be able to move freely in order to allow condensation to drain from the aftercooler when the engine is stopped. Residue from normal engine operation could cause the plunger to stick.
When replacement parts are required for this product, Caterpillar recommends using Cat replacement parts or parts with equivalent specifications including, but not limited to, physical dimensions, type, strength, and material.Never reuse any clamps, seals, or gaskets in the flameproof intake or exhaust system. Always replace clamps, seals, and gaskets with new Cat parts which match the parts being replaced by the exact Cat part number.Failure to heed this warning may lead to premature failures, product damage, personal injury, or death.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Cat Dealer Service Tool Catalog" or refer to Special Publication, PECJ0003, "Cat Shop Supplies and Tools Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Remove the aftercooler condensate drain valve from the flame arrestor.
Check the aftercooler condensate drain valve in order to determine if the plunger 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.
Reassemble the aftercooler condensate drain valve to the flame arrestor. Attach the flame arrestor to the aftercooler.