DATE
30-11-2001
TECO/ATL AUTHOR
BOOK CODE
1-5302-556
MODEL No.
50839
DATE OF ISSUE
01-94
REVIEW 02
APPROVAL
19
65
60
62
61
63
64
LUBRICATION CIRCUIT
VI
Oil pump, difference between clockwise rotation pump and
anticlockwise pump
The difference between the oil pump on clockwise rotation engines
and the anticlockwise one is the suction duct provided either with
the pump case and with the base.
See picture 60 for anticlockwise rotation engines from flywheel
position (3LD 451/S, 3LD 510/S).
A =Intake
B = Delivery
Picture 61, for clockwise rotation engines, seen from the flywheel
side (3LD 450, 3LD 510, 4LD 640, 4LD 705, 4LD 820)
C = Intake
D = Delivery
Oil filter cartridge
Componens:
1 Gasket 5 Bowl
2 Assembly 6 By-pass valve
3 Antidrainage rubber cap 7 Spring
4 Filter element
Features:
Maximum operating pressure: 7 bars
Maximum operating temperature: -25° + 150°C
Filtering degree: 20 µm
By-pass valve setting: 1÷ 1.4
Total filtering surface: 750 cm
2
Oil pressure regulating valve
It is housed in the flywheel side main bearing
For 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S, see picture 63
1 Support 4Sheet metal
2 Valve 5 Screw
3 Spring
Tighten the support at 25 Nm.
For 4LD 640, 4LD 705, 4LD 820,see picture 64
1 Support 5 Spring
2 Gasket 6 Flange
3 Valve support 7 Plate
4 Ball 8 Screw
Tighten the support at 40 Nm.
Oil pressure check
After the assembly operation, fill the engine with oil and fuel;
connect a 10 bars pressure gauge to the fitting on the oil filter.
Start the engine and check the pressure reaction according to oil
temperature.
Oil pressure curve with the engine at its maximum speed
It is shown on the filter and obtained with the engine at 3000 rpm
at N power; the pressure is expressed in bars and the temperature
in degrees Celsius. The curve represents the pressure minimum
value, while its maximum value is 5 bars. The minimum oil
pressure (1200 rpm) with the oil temperature at 100° C shall not be
lower than 0.8 bars.
Note: When the engine has been run in, the oil lubrication
maximum temperature shall be lower than the following
addition: ambient temperature + 95° C.
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