STRIP 6Y6593 - Caterpillar

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Install each valve in the original position. Use a straight edge and a thickness gauge to determine the amount of material that will be removed from the valve seat. Measure the projection of the valve head relative to the bottom deck of the cylinder head. Dimension (W) measures this distance, and this dimension must be 0.50 to -2.00 mm (0.020 to -0.079 inch).Note: Install the intake valves in line with the air inlet opening in the cylinder head.Note: Be sure that you use a fine stone that has the correct diameter to polish the valve seat.
Use an orbital valve seat grinder such as a Chris Marine MSB. Repeat Step 24 frequently to be sure that the correct dimension is obtained.Chris Marine AB
Malmo Sweden
Telex 32867 Chrisma S
46-40 21 03 20
USA, Inc.
Jacksonville, Fla. 32202
(904) 354-6566
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Put a light coat of Prussian Blue on the valve seat of each valve. Install each valve (9) in the original location.
Check the contact pattern on the valve face. A continuous line that is 3.0 mm (0.12 inch) around the valve face indicates a good fit.
If a continuous line is not obtained, use a light lapping compound on the valve to fit the components. Refer to Step 27.Note: Be sure that the lapping compound is removed from the cylinder head before the valve is installed.
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Install each valve in the original location. Install Tooling (B) over the valves.Note: Coat the intake valve stems and the exhaust valve stems with Tooling (T) prior to installation in the cylinder head.
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Turn the cylinder head for 90 degrees (1/4 Turn) on Tooling (A). Install plate (1) and the nut. Plate (1) can be fabricated from 1/4 inch flat stock. Make the plate that measures 32.0 mm (1.25 inch) by 133.0 mm (5.25 inch) with a 16.5 mm (0.65 inch) hole at the center. The plate will hold the valves when the valve stems are turned upward.
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Turn the cylinder head for another 90 degrees (1/4 Turn) on Tooling (A) so the valve stems are upward.
Install spring guides (8) over the valve guide and against the cylinder head.
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Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install inner valve springs (7) and outer valve springs (6).
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Put rotocoil assemblies (5) on top of the valve springs.
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Put compressor plate (3) in position on the valve springs and install the nut to hold the compressor plate. Compressor plate (3) is part of Tooling (B).Note: Loosen the nut that holds plate (1) so that the bolt can move.
Loosen the nut that holds plate (1) so the bolt can move enough to compress the valve springs enough to install the locks. Plate (1) is part of Tooling (B).
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The valve spring keepers can be thrown from the valve when the valve spring compressor is released. Ensure that the valve spring keepers are properly installed on the valve stem. To help prevent personal injury, keep away from