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PLATE AS 4416114 - Caterpillar

4416114 PLATE AS Caterpillar parts PLATE
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Caterpillar 4416114 PLATE AS

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All torques specified in this manual are assembly torques and can be expected to fall off after assembly is accomplished. Do not retorque after initial assembly torques fall.To convert pound inches of torque to pound feet of torque, divide inch pounds by 12.pound inches ÷ 12 = pound feet.To convert pound feet of torque to pound inch of torque, multiply pound feet by 12.pound feet × 12 = pound inchesCylinder Head Assembly
1. If the discharge valve stop was removed and must be replaced, a sealant such as "LOCKTITE RETAINING COMPOUND #75", must be applied to the stop and its corresponding bore in the cylinder head. Before applying the sealant, make certain that the press fit between the discharge valve stop outside diameter and the valve stop bore in the cylinder head is a minimum of 0.033 mm (.0013 in) and a maximum of 0.071 mm (.0028 in). If this fit cannot be maintained, a new cylinder head body must be used. Be sure to completely support the outside top of the cylinder head casting, while pressing in the replacement stops.IMPORTANT: The cylinder head must be supported in a fashion that allows the machined head surface to be parallel to the arbor press bed and perpendicular to the press ram. This is necessary to permit the discharge valve stop to be installed squarely in its bore and to minimize the possibility of "cocking".2. Install the discharge valve spring, discharge valve and valve seat. Using a 9/16 inch hex wrench, torque the discharge valve seat to 52 to 66 N m (70 to 90 lb ft).3. Test for leakage by the discharge valve. Apply 700 kPa (100 psi) of air pressure through the cylinder head discharge port and apply a soap solution to the discharge valve and seat. A slight leakage in the form of soap bubbles is permissible. If excessive leakage is found, leave the air pressure applied and with the use of a fiber or hardwood dowel and a hammer, tap the discharge valve off its seat several times. This will help the valve to seat and should reduce the leakage. With the air pressure still applied at the discharge port of the cylinder head, check for leakage around the discharge valve stop exposed on the top of the cylinder head casting. No leakage is permitted.4. If the unloader piston bushing was removed, press in a new bushing following the same pressing procedures given in Step 1. The inside diameter of the unloader piston bushing must be between 19.042 mm (.7497 in) and 18.948 mm (.7460 in) after pressing.5. Using a 3/8 hex wrench, install the unloader piston stop and O-ring in the head. Torque to 20 to 25 N m (175 to 225 lb in).6. Install the unloader piston and O-ring in the head so that the short stem of the piston rests on the unloader stop.7. Install the unloader piston spring, small end first, on the stem of the unloader piston. Install the metal (copper) inlet

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