Checking And Calibration Values Of Regulator Group A/3-140/24; Dismantling And Reassembling Of Group - Fiat 411 R Service Manual

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Dismantling and reassemi;-ling of group.
Remove lead seals; unscrew the nuts fastening the cover to base, remove both cover and gasket and
dismantle according to needs.
Unweld the coil terminals connected to other elements, and unscrew the nut fastening it to the base.
When checking or reassembling such elements, make sure that the setting screws are not being tampered
with, as during manufacturing they have been sealed with varnish.
For coil terminal seldering use exclusively a neutral flux, avoiding acids.
Carefully watch the insulating washer assembling.
Beeora reinstalling the group cover, make. sure that:
- the open contacts distance of the cut—0ut relay, when at rest, is 0,?!) to 0,85 mm 63.0275" to 0.0334")
for rivet-type groups (R, Fig' 140), and 1,15 to 1,30 mm (Q0452 "to 0.0512") for non-riveted groups;
- Check the group insulation by applying 500 V at 50 cycies between the magnetic coils and the base,
ad between terminal 30 and the base. '
Mount cover when group is hot, to avoid moisture condensation after closing,
CHECKING AND CAL§BRATiOH VALUES OF REGULATOR GROUP A13-'i4i}f24
Cut-out relay ' Voltage regulation (when heated
iwhflfi COW) to 50° C - 122° F on battery)
Cutwut relay (when '
cold on battery) F
" " " '— e e - I ~>,_—=_~_ e~_
Group I _
i ' Regulation voltage
> Closing voltage inversion current ; Battery at halt load on
j battery
@ v A Ah I v ;
i .
r Y r ~—|
l
E mitaticm current
A ' I
*———~ _ —— — .* _.. W __ I _ _ 5, __,_,,_ 1 __ ,____ ,_
Up to No. 08891'? 25,1-25,9 not more than 5 8t1{Nca. 2 batteries 28,1-'-29,7 55,5
l in series} (with 4 A) ~
' Fwm ?~l r >- 088918 up 25.1~25,e ; s m 10 (with so (No. 2 batterie 2a,1-29,1 l 4,1:»s.2s 3
wiring of Fig 144) in series) -(with -1 A) '
in
Adjustment resistance of gii-oup (Fig. 148) at 20° C (68° F) is 138442 chm.
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