Figure 11-8. Piston Measurements.
Figure 11-10. Removing Piston Pin with Tool C-4158-L.
b. Finished Pistons. All
pistons are machined
to the same
(8) Press the piston pin out of the connecting rod.
weight in grams, regardless of oversize, to maintain piston
balance. Pistons with pins are available in standard size
When the pin falls free from the connecting
rod, stop the press to prevent damage to
the bottom of the anvil.
Pay special attention to oversize bores
when overhauling the engine. Specifica-
(9) Remove the tool from the piston.
d. Fitting Pistons. The piston and cylinder wall
clean and dry. Specified clearances between the piston and
the cylinder wall are 0.0005 to 0.0015 inch. Measure the
(1) Install the bearing cap on the mating rod.
piston clearance at the top of the skirt at a 90 degree angle
(2) Remove the rings.
(3) Arrange tool C4158-L for removal of the piston
Figure 11-9. Arragement of Tool C4158-L for Removing
(4) Install the pilot on the main screw.
(5) Install the main screw through the piston pin.
(6) Install the anvil over the threaded end of the main
screw, with the small end of the anvil against the piston boss.
Be sure the spring is removed from the anvil.
(7) Install the nut loosely on the main screw and place
Figure 11-11. Meowing Piston Diameter.