((618)) Under no circumstances should a hammer be used on the piston pin pilot and driver when installing a piston pin. Immersing the piston in boiling water for a minute or two will expand the piston pin hole sufficiently to permit easy installation. To correctly install pin first insert the piston pin pilot and driver …
Carbon must be removed from PistonHeads with the carbon scraper. Never use a wire brush, as particles of carbon or a strand of wire from the brush are liable to be forced between piston and cylinder wall with possibilities of scoring. Before replacing cylinder head poor at least a tablespoon of engine oil around the …
The clearance of gap limits between valves and push rods has been changed from .013 to .015” to .011 to .014”. The gap must be measured with the push rod on the heel of the cam.
When connecting rods and bearing caps are assembled in new engines both the cap and the rod are marked with a number which corresponds with the number of the cylinder into which they are fitted. After taking up a connecting rod bearing be sure to replace the cap in its original position; that is, so …
The only distinction between engines used in either the Model “A” car or “AA” truck has been removed as the same type of clutch spring is now used in all engines. The letters’ “A A” which were formerly stamped on engines intended for truck use have been discontinued. All engine numbers are now prefixed with …
All Engine Numbers Prefixed With Letter “A” Only Read More »
When fitting a wrist pin in piston, select a pin which cannot be pressed into the piston by hand at room temperature. Next submerge the piston in boiling water allowing the piston to remain in the water from one to two minutes, then withdraw piston, wipe out piston pin holes with a clean cloth and …
Clean Carbon and Grind Valves ((Fig. 445)). The all steel valves used in the model “A” engine are accurately ground in at the factory. They form an ideal seat in the cast iron block, consequently they should require no further attention for some time. Grinding Valves Drain water. Loosen radiator stay rods at radiator. Pull …
“Model “A” pistons are fitted in cylinders loose on .002” and tight on .004” When fitting pistons, use a long feeler (thickness gauge) that extends the full length of the piston. Insert the feeler between the piston and cylinder wall on the opposite side of the piston from the slot in the skirt. When properly …
Wrist pins are assembled in the pistons with a metal to metal fit. When properly selected the pin can be pushed into the piston with a slight pressure of the hand. Wrist pins are selected to give a clearance of .0005″ in the connecting rod. The upper end of the connecting rod has .040″ total …
After installing flywheel housing, always check the rear and the counterbored faces of the housing to see that they are in alignment with the face of the crankshaft flange. An indicator is used for this purpose. If either the inner or counterbored face of the housing is out of alignment with the crankshaft flange more …
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