WORKSHOP MANUAL - lombardini service
WORKSHOP MANUAL - lombardini service WORKSHOP MANUAL - lombardini service
4 Disassembly / Reassembly Valve timing - Angles The angle values are determined by turning the driving shaft clockwise. S = Piston at top dead centre I = Piston at bottom dead centre α = Intake valve open β = Intake valve closed γ = Exhaust valve open δ = Exhaust valve closed Timing angles for operating purposes (valve clearance = 0.25 mm) α = 16° before S β = 36° after I γ = 36° before I δ = 16° after S Timing angles for checking puposes (valve clearance = 2 mm) α = 21° after S β = closes in I γ = 2° after I δ = 20° before S 27 SPEED GOVERNOR The weight-type mechanical governor, is driven directly by the camshaft and is housed with the cylinder head. Components: 1 Thrust washer 2 Spool 3 Flyweight assembly 28 29 Speed governor components 1 Oil seal 2 Screw 3 Support 4 O-Ring 5 Bearing 6 Retainer 7 Screw 8 Flyweight assembly 9 Spool 10 Thrust washer 30 - 30 - FOCS Workshop Manual_cod. 1.5302.858_1° ed_ rev. 00
Disassembly / Reassembly 4 Governor springs Unscrew the pin that attaches it to the cylinder head. To remove it as shown in the figure it is necessary to dismount the camshaft. It could also be removed from the accelerator box side by unscrewing the torque gearing device. Before reassembling it, check value A (45 to 46 mm) and the parallelism of the two levels B that must not exceed 0.05 mm. 31 32 Speed governor - Limiting speed governor With applications for the automotive sector the regulator spring (C, fig. 31) is replaced by a device (plunger barrel) that only enables a constant speed at the minimum and maximum rpm rating. Components: 33 1 Nut 2 Idle speed spring 3 Max. speed spring 4 Case 5 Register 6 Spring ring 7 Actuation rod Speed governor - Reassembly Caution – Warning While reassembling, check the integrity of the components and check that they operate correctly. Bad operation of the speed governor can cause serious damage to the engine and to people being near to it. Remount in reverse order to Fig. 30. When inserting the bearing in the camshaft, do it so that the four blocks enter opened, so that they can receive the hose and close over it. Check the integrity of the sealing rings of the cover. 34 Tighten the three screws at a torque of 10 Nm. Note: With the speed governor mounted the camshaft axial clearance should be zero. FOCS Workshop Manual_cod. 1.5302.858_1° ed_ rev. 00 - 31 -
- Page 1: WORKSHOP MANUAL 1003 FOCS Engine Se
- Page 4 and 5: - REGISTRATION OF MODIFICATIONS TO
- Page 6 and 7: - Chapter index Cylinder head tight
- Page 8 and 9: - Chapter index Pump/injector unit
- Page 10 and 11: 1 General remarks and safety inform
- Page 12 and 13: 2 TECHNICAL INFORMATION TROUBLE SHO
- Page 14 and 15: 2 Technical information MANUFACTURE
- Page 16 and 17: 2 Technical information PERFORMANCE
- Page 18 and 19: 3 MAINTENANCE - RECOMMENDED OIL TYP
- Page 20 and 21: 3 Maintenance - Recommended oil typ
- Page 22 and 23: 4 DISASSEMBLY / REASSEMBLY RECOMMEN
- Page 24 and 25: 4 Disassembly / Reassembly E.G.R. C
- Page 26 and 27: 4 Disassembly / Reassembly Flywheel
- Page 28 and 29: 4 Disassembly / Reassembly Cranksha
- Page 32 and 33: 4 Disassembly / Reassembly OIL PUMP
- Page 34 and 35: 4 Disassembly / Reassembly Injectio
- Page 36 and 37: 4 Disassembly / Reassembly 54 55 CA
- Page 38 and 39: 4 Disassembly / Reassembly VALVES T
- Page 40 and 41: 4 Disassembly / Reassembly Valve se
- Page 42 and 43: 4 Disassembly / Reassembly PISTON R
- Page 44 and 45: 4 Disassembly / Reassembly 91 92 Pi
- Page 46 and 47: 4 Disassembly / Reassembly CONNECTI
- Page 48 and 49: 4 Disassembly / Reassembly Central
- Page 50 and 51: 4 Disassembly / Reassembly Cranksha
- Page 52 and 53: 4 Disassembly / Reassembly . ......
- Page 54 and 55: 5 LUBRIFICATION CIRCUIT Danger - At
- Page 56 and 57: 5 Lubrification circuit Oil pressur
- Page 58 and 59: 6 COOLANT CIRCUIT Danger - Attentio
- Page 60 and 61: 7 FUEL SYSTEM Fuel feeding / inject
- Page 62 and 63: 7 Fuel system Plunger barrel ring n
- Page 64 and 65: 7 Fuel system Setting of injector R
- Page 66 and 67: 7 Fuel system Static injection adva
- Page 68 and 69: 8 ELECTRIC SYSTEM Alternator, 14V 3
- Page 70 and 71: 8 Electric System STARTER MOTOR - B
- Page 72 and 73: 8 Electric System Oil pressure swit
- Page 74 and 75: 9 SETTINGS SPEED SETTINGS Setting t
- Page 76 and 77: 9 Settings Pump/injector unit deliv
- Page 78 and 79: 10 STORAGE ENGINE STORAGE - When th
Disassembly / Reassembly<br />
4<br />
Governor springs<br />
Unscrew the pin that attaches it to the cylinder head.<br />
To remove it as shown in the figure it is necessary to dismount the<br />
camshaft. It could also be removed from the accelerator box side by<br />
unscrewing the torque gearing device.<br />
Before reassembling it, check value A (45 to 46 mm) and the<br />
parallelism of the two levels B that must not exceed 0.05 mm.<br />
31 32<br />
Speed governor - Limiting speed governor<br />
With applications for the automotive sector the regulator spring (C,<br />
fig. 31) is replaced by a device (plunger barrel) that only enables a<br />
constant speed at the minimum and maximum rpm rating.<br />
Components:<br />
33<br />
1 Nut<br />
2 Idle speed spring<br />
3 Max. speed spring<br />
4 Case<br />
5 Register<br />
6 Spring ring<br />
7 Actuation rod<br />
Speed governor - Reassembly<br />
Caution – Warning<br />
While reassembling, check the integrity of the components<br />
and check that they operate correctly.<br />
Bad operation of the speed governor can cause serious<br />
damage to the engine and to people being near to it.<br />
Remount in reverse order to Fig. 30.<br />
When inserting the bearing in the camshaft, do it so that the four<br />
blocks enter opened, so that they can receive the hose and close<br />
over it.<br />
Check the integrity of the sealing rings of the cover.<br />
34<br />
<br />
Tighten the three screws at a torque of 10 Nm.<br />
Note: With the speed governor mounted the camshaft axial<br />
clearance should be zero.<br />
FOCS Workshop Manual_cod. 1.5302.858_1° ed_ rev. 00<br />
- 31 -
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