Fiat 411 R Service Manual page 22

Brake overhaul.
To be performed as follows:
Removal from tractor-
inspection.
Assembling.
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Brake adiustment.
72
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To remove brake bands:
— drain transmission casing oil and remove from
the iracior the final drives, according to page 'F0
instructions,'
- remove the differential casing lower covers and
unscrew the screws (V, Fr'g.119) remove the pedal
springs, remove the adjusimeni rod ends B from
outer arm and slide it out;
-— remove the braking band end pins from the inner
confrol arm (Z, Fig. 118) and lake them away'.
w...
Checlr the brake pulley surface and rr necessary
iurn it down, avoiding faking deep culs which
would impair its resistance;
check the dlfierential axle seals for oil leakages;
correct any leakages smearing the ferodo lining;
replace bands if soaked with oil using tool A 513007
for riveting;
in addition check the shall and pedal bushes for
wear (Fig. 113 a and b).
A/lake sure that:
— the screws (V. Fig. 119) are fasiened by wire lo
the internal levers (5, Fig. 118);
— screws are facing the tractor rear end; if not,
the exiernal levers T have been interchanged
and no braking action would be possible;
- when mounting final drives, avoid damaging the
differential bevel gear support seal wilh the
differential axle end.
Fig. 119. - View of brake hands ané ccmtrois. '
A = Clovis lockouts - B = Caps - R =- Brake band centering
screws ~ T = Outer arm - V = inner arm screws.
When mounting brakes on irecior:
- unscrew [he two nuts and compleiely screw on
the brake band tenierlng screws (R, Fig. H9)
then unscrew {hem lhrouglv a complete Zurn, and
re-lighten the nuts;
- slacken nuis A and unscrew rods (B, Fig. 119)
until the free travel of each pedal is taken up, than
screw them again two turns so that the brake
pedal travel is about 50 mm (1 .969").
Before adjustment, the brake control lever should
be set all live way down with respect lo the sector
plate.
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