Farmall 90 Manual page 59

-- Check that the toothing of the grooved bushing
(1), splined onto the crankshaft (2) is neither
damaged nor worn; if it is, remove it with the a
suitable extractor (3).
-- When fitting the new grooved bushing it must be
heated for 60 minutes in an oven at a constant
temperature of 160 °C (320 °F) and spline it onto
the crankshaft.
NOTE: If the main journals of the crankshaft are un-
dersized it is necessary to replace the main bearings
of the same undersize class made.
Do not modify the bearings in any way.
The main bearings (1) are supplied as spare parts
with an undersized inside diameter of 0.250--0.500
mm (0.0098--0.0196 in).
Carefully clean the main half bearings (1) with a lu-
brication hole and fit them into their respective seats.
The penultimate main half bearing (1) is equipped
with semi--circular thrust washers.
-- Fit the crankshaft (3) with the gear (1) and the
grooved bushing (2).
SECTION 10 - - ENGINE - - CHAPTER 1
MIF1134A
MIF0962A
MIF1135A
59
101
102
103