Measuring The Piston Diameter - Farmall 90 Manual

122
CAUTION
Handle all parts carefully.
Do not put your hands or fingers between parts.
Wear the prescribed safety clothing, including
goggles, gloves and safety footwear.
Clean all parts carefully before proceeding with the
operations described below.

Measuring the Piston Diameter

Using a micrometer (2) measure the diameter of the
piston (1), and check the cylinder liners to determine
the state of wear of the liners and pistons (see
pages 8 and 9).
If the clearance is not within the tolerances stated on
page 9, it will be necessary to ream, rebore the liners
and fit oversize pistons and rings (see pages 8
and 9).
NOTE: The diameter must be measured at a distance
of 61 mm (2.4015 in) from the base of the piston skirt.
Clearance between the piston and the cylinder liner
can be measured with a feeler gauge (1), as shown
in the figure 261.
Piston Pins
Measuring the piston pin (2) diameter using a mi-
crometer (1).
When fitting pins on pistons, check that the clearance
between the gudgeon pin and its bore in the piston is
within the tolerance specified on page 9.
SECTION 10 - - ENGINE - - CHAPTER 1
MIF1035A
MIF1036A
MIF1037A
260
261
262