Table of Contents
Advertisement
126
128
130
132
Workshop Manual LDW CHD _ cod.
127
129
131
ED0053031210 - 1° ed_rev. 00
Lubrication system
Oil pump
Components:
1 Suction port
2 Delivery port
3 Oil pressure adjusting Valve port
4 Gasket
The oil pump is driven by the crankshaft via key 7. Rotor 6 is
locked in the circumferential but not in the axial direction.
This allows the shaft to move axially while rotors 5 and 6 are
prevented from damaging the pump sealing surfaces.
Oil pump capacity = 24.5 litres/min. at a pressure of 4.5÷4.75
bar (engine speed 3000 rpm, oil temperature 38÷42°C).
Oil pump rotor clearance
Measure clearance A between the teeth located along the axis
of the keyway as shown in the figure 129; its value is 0.150 mm;
worn limit clearance 0.280 mm.
Oil pressure adjusting valve
Components:
1 Valve
2 Spring
3 Gasket
4 Plug
Length of spring A = 45.5 ÷ 46.0 mm.
Blow compressed air into the valve seat and carefully clean all
components; using a caliper measure the length of spring A.
Oil filter cartridge
Components:
1 Gasket
2 Plate
3 Gasket
Specifications:
Max. working pressure ................... 7 bar
Max. explosion pressure................. 20 bar
Low temperature limit ..................... -35°C
By-pass valve setting...................... 2.1/2.8 bar
Total filtering surface....................... 2000 cm2
Degree of filtration .......................... 15 µm
6
5 External rotor
6 Internal rotor
7 Key
4 Blade
5 Filtering material
6 By-pass valve
- 71 -
- 71 -
Advertisement
Table of Contents
