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D
E
4
AILY
URO
543212
Electromagnetic pulley
Figure 257
CROSS-SECTION OF THE ELECTROMAGNETIC JOINT
Characteristics
Transmissible torque at 20°C with clutch run in
Voltage
Power input
The electric fan control relay is activated or deactivated
according to the temperatures of: the engine coolant, the fuel
supercharging air and the pressure of the air conditioner fluid
(if present).
Coolant temperature
(if the sensor is not defective)
For 96/116 HP engines:
-
it activates at > 96°C and deactivates at < 84°C.
For 136 HP engines:
-
it activates at > 102°C and deactivates at < 90°C.
Turbocharging air temperature
It activates at > 75°C and deactivates at < 65°C.
Fuel temperatures
(if the coolant temperature sensor is acknowledged to be
defective by the EDC control unit)
It activates at > 20°C and deactivates at < 10°C.
With climate control system
With pressure in the system
it turns on
it turns off
543210
Water pump
Figure 258
Print 603.93.651
The water pump (3) cannot be overhauled. In case of coolant
leaking from the seal or damage, it must be replaced. The
water pump casing (1) is also used as a mounting for the
high-pressure pump. The seals (3 and 4) must always be
replaced.
Figure 259
75527
45 Nm
12 Volts
26 W
543250
Figure 260
18.5 ± 0.98 bar
14.58 ± 0.98 bar
The by-pass thermostat (1) needs no adjustment.
If there is any doubt about its operation, replace it.
The thermostat casing is fitted with the thermometric
switch/transmitter and water temperature sensor.
A. — A1 Start of stroke at 78°C ±2°C.
B.
B1
The stroke of 7 mm less than 60".
75528
LONGITUDINAL CROSS-SECTION OF THE
WATER PUMP
1. Pump casing — 2. Pump drive shaft together with
bearing — 3. Seal — 4. Impeller.
Thermostat
Valve (1) stroke at 94°C = 7 mm.
Valve (2) stroke 94°C, 6.4 mm
123
F1A ENGINE
75529
75530
Base - March 2006
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