13-12 LT-F250K6 (’06-MODEL)
CAMSHAFT + CYLINDER HEAD Unit: mm (in)
CYLINDER + PISTON + PISTON RING Unit: mm (in)
ITEM STANDARD LIMIT
Cam height
IN.
33.780 – 33.820
(1.3299 – 1.3315)
33.480
(1.3181)
EX.
32.990 – 33.030
(1.2988 – 1.3004)
32.690
(1.2870)
Camshaft journal oil clearance 0.036 – 0.066
(0.0014 – 0.0026)
0.150
(0.0059)
Camshaft journal holder I.D. 22.012 – 22.025
(0.8666 – 0.8671)
—
Camshaft journal O.D. 21.959 – 21.976
(0.8645 – 0.8652)
—
Camshaft runout
—
0.10
(0.004)
Rocker arm I.D.
IN. & EX.
12.000 – 12.018
(0.4724 – 0.4731)
—
Rocker arm shaft O.D.
IN. & EX.
11.977 – 11.995
(0.4715 – 0.4722)
—
Cylinder head distortion
—
0.05
(0.002)
Cylinder head cover distortion
—
0.05
(0.002)
ITEM STANDARD LIMIT
Compression pressure
Approx. 1 400 kPa (14 kgf/cm
2
, 199 psi)
1 200 kPa
(12 kgf/cm
2
, 171 psi)
Piston to cylinder clearance 0.040 – 0.050
(0.0016 – 0.0020)
0.120
(0.0047)
Cylinder bore 66.000 – 66.015
(2.5984 – 2.5990)
66.090
(2.6020)
Piston diam. 65.955 – 65.970
(2.5966 – 2.5972)
Measure at 18 mm (0.71 in) from the skirt end.
65.880
(2.5937)
Cylinder distortion
—
0.05
(0.002)
Piston ring free end gap
1st R Approx. 8.7 (0.34)
7.0
(0.28)
2nd R Approx. 9.0 (0.35)
7.2
(0.28)
Piston ring end gap
1st
0.10 – 0.25
(0.004 – 0.010)
0.50
(0.020)
2nd
0.10 – 0.25
(0.004 – 0.010)
0.50
(0.020)
Piston ring to groove clearance
1st —
0.180
(0.0071)
2nd —
0.150
(0.0059)
Piston ring groove width
1st
1.01 – 1.03
(0.0398 – 0.0406)
—
2nd
1.21 – 1.23
(0.0476 – 0.0484)
—
Oil
2.01 – 2.03
(0.0791 – 0.0799)
—
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