Glow Plugs Removal And Cleaning; Checks On The Test Bench; Starting Motor Performance Data - Fiat 411 R Service Manual

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Refill ihe free-Wheel, and the starting E3iniOn fork guides with high melting point grease; when assembled
before the test~bench checks, see that end clearance (C, Fig. 185) ls 0,35 to 0,75 mm (O.l)€38" to 0.0295")
STARTING NIDTQR PERFORMANCE DATA
' or K 7 ..~_W — - F1 Ti ,7 ___ _ ___
Specifications Values
' current . . . . . . . . . . . . . . . . Q 235 A
1 Operational test (under load) <v torque" ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
I L55 to 2,15 Rgm (13.3 'to 15.5 Ftlb.)
; i speed i-are . . , . . . . . . . . . 4 _ ' 1510 to 1610 !'.p.m.
i i . voltage . . . . . . . . . . . . . . . . 1 l9 V
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3 'current . . . . . . . . . . . . . . . . 620 A '
1 Checking motor 'torque when stopped > voltage . . . . . . . . . . . . . . . . 5 12.7 to 13 V
' 4000 to some r.p.m.
Comrnutator out-of-round . . . . . . . . . . . , . . . , . . . . . . , . . . 1
' internal iotal resistance of motor, when stopped (at 40°C - 104° F) . , . . . . 0.0205 to 0.0215 ohm
. l =
30l<-Bflvld " solenoid internal coil resisrance when heated . . . . . . . . . . . l 1.36 to 1.46 ohm
A _ 8,5 lo 10,1 mm (0.334 lo 0.391") l
r _ torque . . . . . . . . . . . . _ . . . 4,52 lo -4,15 kgm (ss.4 to 34,3 ftib.)
l current. . . . . . . . . . . . . . . . . 36 A
r speed rate . . . , . . . . . . . . . .
l>,l_)2 mm (0.GOD'?8")
' Pole shoes inner diameter . . . . . . . . . . . . . . A . . . . . . . . . . . ' 75.83 'zo 76 mm (29855 to 2.992l"}
i Resistance of main field coil {in series), at 25°C E68" F) . . . . . . . F 0.0060 to 8.0070 ohm
Resistance of secondary field coil (shunted), at 20416 (58°F') . . . . . . . . . ~ 1 to 1.14 ohm
r solenoid liii force, with a current of 9 A and an air gap of 5 mm (0.1'S-"} g not less thou H kg (24.2 lb.)
l Solenoid mobile coniact travel . . . . . . . . . . . . . . . . . . . . . . . . =
' Brush spring pressure (new brushes) . . . . . . . . . . . . . . . . . , . . I 1,15 to 1,30 kg (0.52 to 0.58 lb.)
' Armature axial play (C, Fig. 165) . . . . . . . . . . . . , Q . . . . . . . . . l
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_; ldling test of motor (under no load) 4 voltage . . . . . . . . . . . . . . . , 24 V
Armaluro outer diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . ?4,95 To 75 mm {Z9508 to 2.9528") '
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' ' energizing current at 24 V, (2G° C - 58° F} . . . . . . . . . . . . . Z 17 A
. 6,4 '£0 8,45 mm (0.252 lo 0.333") l
= Solenoid core travel . . . . . . . . . . . . . . . . . . . . . . . , . . . .
V 0,35 to 9,75 mm (013138 f0 0.0295") I
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_ 7 _ _ _ 77"', '_—___—:_~s'_— ___ _;' ___'_____;
GLOW PLUGS
The glow plug 'consists of a thin wire helix, contained in an insulaior and surrounded by a metallic shell
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which is hosted by the incandescent coil to 856" C (?562° F) through the insulator when energized by a
24 V current. V '
The glow plugs are shunt branched (nominal voltage 24 V, MOW each}.
na-
rcemovai and cleaning.
Before unscrewing the plugs, free their terminals. Clean them with a metallic brush, wash in gasoline
and blow them dry.
Checks on fhe fest bench.
a) Check the plug current absorption at 24 V (5.82i0.2 A};
b) Sealing. The plug is screwed in a seal similar lo the one existing on the engine in a vessel the
pressure of which can be raised to 30 kglcmi (426.70 p.s.l.).
Air leaks, against the atmospheric pressure of 760 mm (29.92l3"') of mercury, shall not -exceed 2 cm"
110.1220 CU.il'l) of air. '
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