SHORT BLOCK 10R1820 - Caterpillar

Note: Either Tooling (A) can be used. Use the Tooling that is most suitable.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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Lubricate the valve bridges with clean engine oil.
Failure to ensure that ALL valve bridges are correctly seated onto the valve stems will cause interference between the pistons and the valves, resulting in damage to the engine.
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Lubricate the pushrods with clean engine oil.
Ensure that when the pushrods are installed into the hydraulic lift there should be a noticeable snap when the pushrods are correctly installed.
If necessary, use Tooling (A) to rotate the crankshaft so that number one piston is at top dead center on the compression stroke. Refer to System Operation, Testing and Adjusting, "Position the Valve Mechanism Before Maintenance Procedures" for the correct procedure.
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Use the tooling to lock the crankshaft.
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Use Tooling (A) to rotate the crankshaft in a clockwise direction and position the crankshaft at 60 degrees after top dead center.
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Tightening sequence for the screws.
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Damage to the engine will occur if all threaded inserts are not fully unscrewed.
Illustration 9 g06273232Note: When the threaded insert is tightened, the threaded insert must seat correctly into the cup for the pushrod.
Illustration 10 g06273233
The engine should not be operated for a period 30 minutes after the threaded inserts on all the rocker arms have been tightened. This period will allow the force of the valve springs to purge off excessive engine oil from the hydraulic lifters.
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Install the valve mechanism cover.