Belt Replacement - Fiat 411 Rb Instruction Book

if pedal travels are different or greater than specified, adiust as foi-
lows (see fig. 15):
~»~ Fuily tighten screws 1, then back out 1'/2 turn and secure by
iocknut.
~—— Slacken locknuts 2 and backout adjustment rods 3 until pedai
travel is fully taken up; next, screw in the adiustment rods a few
turns to obtain a 5 cm (2") pedal travel. Locirl in position by nuts 2.
After this adiustment, remove the two tower plugs located near the
brake band centering screws to drain possible oil deposits in brake
housings.
Engine cooling system flushing (operation N0. 34 of the Chart):
wash the engine cooling system every 1200 working hours, when
changing from plain water to anti-freeze mixtures and viceversa, or
whenever a drop in cooling system efficiency is noticed.
Flush as foliows:
—- Drain the water, with warm engine, by opening the cocks under
radiator and on engine ieft side (remove radiator filler cap for
faster draining).
-~ Dissolve .55 lbs. of sodium carbonate in about 2.2 imp. gals. of
water, filter the solution through a cloth and pour into radiator
after the engine has cooled clown.
— Use the tractor for about an hour in order to heat up the engine
and then drain the cooling system.
M Wait until the engine has cooled down and circulate water in the
system feeding it through the radiator cap and leaving the drain
cocks open.
— Ciose drain cocks, fill with ciean water, run the engine for a few
minutes and drain again.
—~ Let the engine cool down and fill radiator to correct ievel. if tem-
perature is close to or lower than O"C (32" F) use an anti-freeze
mixture.
NOTE — Water must be drained will! engine inoperative.
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Oi! replacennmt in lifter tank (operation No. 30 of the Chart):
when after 600 hours of operation the oil is changed in lifter, ciean
also the filter located inside the unit. To this end, after draining the
used oil, remove the lid on upper end (secured by three screws)'take
out the filter and wash by dipping in kerosene.
Before refilling with new oil it is advisable to unscrew the vent plug
on iifter unit top and the magnetic plug on oii feed iine connection
and clean both plugs in kerosene (marked D and E in the iliustration
of operation 30 on the Maintenance Chart). "
For the oii grade to be used see << Fiil-up data» on the Chart.
BELT REPLACEMENT
Generally, the replacement of fan and generator drive belt presents
no particular difficuity and is intuitive. When tractor is equipped with
hydraulic system pump, the latter need not be removed for belt re-
placement: just siacken the two heit stretcher nuts (see operation 15
of the Chart), remove the bolt on pump shaft (see fig. 16) and slide
shaft rear end forward to aiiow the passage of belt between the putley
and the shaft itself.
Fig. 16. - Hydraulic system
pump drive shaft.
1. Shall.
2. Bolt Joining lhc;- two shalt
sections (tho nut |$ secured
by cullur).
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