New Holland TD60D - Checks, Measurements and Repairs - Pistons

85
SECTION 10 − ENGINE − CHAPTER 1
603.54.471.00 − 11 − 2004
152
CHECKS, MEASUREMENTS AND REPAIRS −
PISTONS
25322
WARNING
Handle all parts carefully. Do not put your hands or
fingers between parts. Wear suitable safety clothing,
safety goggles, gloves and footwear.
Clean all parts carefully before carrying out the
following operations.
Determine the degree of piston and liner wear in the
manner described on pages 16 and 19 and the fig-
ures below.
If the piston running clearance exceeds 0.30 mm
(0.0118 in.), rebore and ream the liners and fit
oversize pistons and rings (see pages 16 and 19).
In case of piston replacement, check that the weight
difference between pistons in the same engine does
not exceed 20 grams (0.0441 lb).
Check that the piston ring groove clearance (b, fig.
152) and the end gap (c, fig. 152) are within the
tolerances specified on page 19. If the end gap is less
than that specified, correct by grinding the ends of
the piston ring.
Checking pistons and rings
a. Checking piston diameter at a distance (L) from
the base of the skirt.
b. Checking piston ring groove clearance.
c. Checking the end gap with ring in cylinder bore.
L. Distance from base of piston skirt: 12 mm
(0.4724 in.).