246 POWER CYLINDERS
Table 29 Piston Specifications (cont.)
466 piston: 0.076 - 0.128 mm
(0.0030 - 0.0050 in)
Running clearance between piston and cylinder sleeve
570 piston: 0.063 - 0.115 mm
(0.0025 - 0.0045 in)
466 piston: 116.44 - 116.49 mm
(4.584 - 4.586 in)
Skirt diameter
570 piston: 116.48 - 116.51 mm
(4.586 - 4.587 in)
Top compression ring groove width, 466 measure over 0.122 gauge
pins
115.90 - 115.68 mm (4.563 -
4.554 in)
Top compression ring groove width, 570 measure over 0.126 gauge
pins
116.74 - 116.50 mm (4.596 -
4.587 in)
Intermediate compression ring groove width (keystone shaped ring)
measure over 0.110 gauge pins
115.92 - 115.73 mm (4.564 -
4.556 in)
Intermediate compression ring groove width (rectangular shaped
ring), 466
3.05 - 3.03 mm (0.120 - 0.119 in)
Intermediate compression ring groove width (
rectangular shaped
ring), 570
3.05 - 3.03 mm (0.120 - 0.119 in)
Oil control ring, side clearance, 466
0.076 - 0.026 mm (0.0030 -
0.0010 in)
Oil control ring, side clearance, 570
0.080 - 0.030 mm (0.0031 -
0.0012 in)
Table 30 Piston Ring Specification
s
Intermediate compression ring end gap
1.65 - 1.90 mm (0.065 - 0.075 in)
Oil control ring end gap 0.35 - 0.66 mm (0.014 - 0.026 in)
Top compression ring end gap
0.35 - 0.66 mm (0.014 - 0.026 in)
Table 31 Piston Pin Specificati
ons
466 piston: 0.0165 - 0.0292 mm (0
.00065 -
0.00115 in)
0.035 - 0.048 mm (0.0014 - 0.0019 in)
570 skirt (vertical plane): 0.0165 - 0.0292 mm
(0.00065 - 0.00115 in)
570 skirt (horizontal pla
ne): 0.0280 - 0.0574 mm
(0.00114 - 0.00226 in)
Clearance in piston
570 crown: 0.038 - 0.053 mm (0.0015 - 0.0021 in)
Diameter
46.352 - 46.357 mm (1.8249 - 1.8251 in)
Length
96.57 - 96.82 mm (3.80
2 - 3.812 in)
EGES-265-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.
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