HOUSING AS-FILTER 4288649 - Caterpillar

1. Remove four bolts (2), ventilator valve (1) and the gasket.Install Crankcase Ventilator Valves
1. Put gasket (2) and ventilator valve (1) in position.2. Install the bolts, and tighten them to a torque of 3.4 0.5 N m (30 4 lb in).End By:a. install valve coversDisassemble Crankcase Ventilator Valves
The crankcase ventilator valve can be disassembled while installed on the engine. The valve was removed for better photo illustration. 1. Remove screws (2) that hold cover (3) on housing (1). 2. Remove cover (3) and spring (4) from the housing. 3. Remove the piston, sleeve (8), retainer (9) and diaphragm (7) from the housing as a unit.4. Remove inner sleeve (6) and gasket (5) from the housing. 5. Remove nut (12), washer (13), spacer (11), piston (10), diaphragm (7) and the retainer from sleeve (8).Assemble Crankcase Ventilator Valves
1. Put 5H-2471 Cementon both sides of gasket (2). Install the gasket on housing (1).2. Install inner sleeve (3) in the housing. 3. Put piston (6) in position next to the side of diaphragm (4) that has the identification "PISTON SIDE".4. Put retainer (5) in the diaphragm. 5. Put the screw through sleeve (7), retainer, diaphragm and the piston.6. Install spacer (8) and washer and nut (9) on the screw.7. Put 5H-2471 Cementon the contact surfaces of the diaphragm. Install the sleeve, retainer, diaphragm and piston in the inner sleeve and housing.8. Put the spring and cover in position on the housing, and install the screws that hold the cover in place.