E 350 1 Ton Van V10-6.8L VIN S (1997)
Piston: Testing and Inspection
Piston Selection
NOTE: The cylinder bore must be within the specifications for taper and out-of-round before fitting a piston.
1. Select a piston size based on the cylinder bore.
2. Choose the piston with the proper paint color.
^
Red in the lower third of the size range.
^
Blue in the middle third of the size range.
^
Yellow in the upper third of the size range.
NOTE: For precision fit, new pistons are divided into three categories within each size range based on their relative position within the range.
A paint spot on the new pistons indicates the position within the size range.