Farmall 90 - Page 8

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SECTION 10 -- ENGINE -- CHAPTER 1
CONNECTING ROD DATA mm (in)
Connecting Rods ......................................... printed in steel, oblique--cut type
Diameterofsmallendbushingseat ......................... 40.987 to 41.013 (1.6136 to 1.6146)
Outsidediameterofsmallendbushing ...................... 41.279 to 41.553 (1.6251 to 1.6359)
Interferencebetweensmallendbushingandseat ............. 0.266 to 0.566 (0.0104 to 0.0222)
Insidediameterofsmallendbushing(measuredafterfitting).... 38.019 to 38.033 (1.4968 to 1.4973)
Diameter of big end bearing seats .......................... 72.987 to 73.013 (2.8734 to 2.8745)
Connecting rod--crankpin end float ......................... 0.100 to 0.330 (0.0039 to 0.0129)
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Farmall 90 -- Farmall 95
Pistons ................................................. light alloy with three compression rings,
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Standard piston diameter, measured at 2.4015 in. (61 mm) from
skirt base and perpendicularly to the gudgeon pin axis .........
104.000 to 104.024 (4.0944 to 4.0954)
Piston clearance in cylinder liner ............................
0.268 to 0.310 (0.0105 to 0.0122)
Pistonoversizes.......................................... 0.500 (0.0196)
Piston protrusion at T.D.C. from cylinder block face ............ 0.280 to 0.520 (0.0110 to 0.0204)
Gudgeon pin diameter ..................................... 37.994 to 38.000 (1.4958 to 1.4960)
Diameter of gudgeon pin seat in piston ...................... 38.010 to 38.016 (1.4964 to 1.4966)
Gudgeon pin to seat clearance ............................. 0.010 to 0.022 (0.0003 to 0.0008)
Gudgeon pin to small end bearing clearance ................. 0.019 to 0.039 (0.0007 to 0.0015)
Piston ring groove depth:
-- 1 ° ring................................................. 2.705 to 2.735 (0.1064 to 0.1076)
-- 2 ° ring.................................................
2.440 to 2.460 (0.0960 to 0.0968)
-- 3 ° ring................................................. 4.030 to 4.050 (0.1586 to 0.1594)
Piston ring thickness:
-- 1 ° ring................................................. 2.560 to 2.605 (0.1007 to 0.1025)
-- 2 ° ring.................................................
2.350 to 2.380 (0.0925 to 0.0937)
-- 3 ° ring................................................. 3.970 to 3.990 (0.1562 to 0.1570)