fuel pressure FIAT 127 1979 2.G Workshop Manual
[x] Cancel search | Manufacturer: FIAT, Model Year: 1979, Model line: 127, Model: FIAT 127 1979 2.GPages: 34, PDF Size: 6.87 MB
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Camshaft bearing bore diameter in head:
Valve gear end 1.1807 to 1.1817 29.990 to 30.015
Centre 1.0648 to 1.0657 27.045 to 27.070
Flywheel end 0.9860 to 0.9870 25.045 to 25.070
Camshaft journals fit clearance 0.0012 to 0.0028 0. 030 to 0.070
Cam lift (C, L and CL) 0.3425 8.700
Cam lift (Sport):
Inlet 0.3622 9.200
Exhaust 0.3642 9.250
Standard tappet bore diameter 1.4567 to 1.4577 37.0 00 to 37.025
Standard tappet outside diameter 1.4557 to 1.4565 36.975 to 36.995
Tappet fit clearance 0.0002 to 0.0020 0.005 to 0.05 0
Shim thickness 0.1279; 0.1299; then
0.0039 steps to 0.1850
3.2b; 3.30; then
0.10 steps to 4.70
Auxiliary shaft inches mm
Diameter of bush bores in crankcase:
Front 1.6339 to 1.6350 41.500 to 41.530
Rear 1.5733 to 1.5745 39.962 to 39.992
Fitted bush internal diameter:
Front 1.5143 to 1.5151 38.464 to 38.484
Rear 1.4553 to 1.4561 36.964 to 36.984
Diameter of shaft journals:
Front 1.5115 to 1.5125 38.393 to 38.418
Rear 1.4525 to 1.4535 36.893 to 36.918
Bush fit There must always be an interference fit
Shaft/bush fit clearance (front and rear) 0.0018 to 0.0036 0.046 to 0.091
Lubrication system
Oil pump Four lobe rotor type
Pump drive Through auxiliary shaft
Oil pressure relief valve Incorporated in pu mp
Pump rotors endfloat 0.0018 to 0.0047 0.045 to 0.120
Outer rotor to body clearance 0.0006 to 0.002 2 0.016 to 0.055
Inner to outer rotor clearance 0.0010 to 0.00 39 0.025 to 0.100
Oil pressure at 212°F (100°C) 50 to 70 Ibf/in
2 (3.5 to 5 kgf/cm2)
Cooling system
Radiator fan thermal switch
Cuts in . 194° to 201°F (90° to 94°C)
Cuts out 185° to 192°F (85° to 89°C)
Engine coolant thermostat
Starts to open 176° to 183°F (80° to 84°C)
Fully open 205°F (96°C)
Impellor vanes to pump body fit clearance 0.0315 to 0.0512 in (0.8 to 1.3 mm)
Radiator cap relief pressure 11.4 Ibf/in
2 (0.8 kgf/cm2)
Fuel system
Weber 32 ICEV 16/150 carburettor (C, L and CL model s)
Venturi diameter 0.8465 in (21.5 mm)
Main jet . 0.0453 in (1.15 mm)
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Air correction jet 0.0728 in (1.85 mm)
Slow running jet 0.0177 in (0.45 mm)
Emulsion tube type F74
Accelerator pump jet 0.0157 in (0.40 mm)
Needle valve seat 0.0591 in (1.50 mm)
Accelerator pump output (10 strokes) 2 to 3 cm
3
Cold starting device Automatic choke
Float level 1.4016 to 1.4213 in (35.6 to 36. 1 mm)
CO level 2.5%
Solex C32 TDI/4 carburettor (C, L and CL models)
Venturi diameter 0.8465 in (21.5 mm)
Main jet 0.0453 in (1.15 mm)
Air correction jet 0.0768 in (1.95 mm)
Slow running jet 0.0177 in (0.45 mm)
Emulsion tube type 71
Accelerator pump jet 0.0177 in (0.45 mm)
Needle valve seat 0.0630 in (1.60 mm)
Accelerator pump output I10 strokes) 3 to 5 cm
3
Cold starting device Automatic choke
Float level 0.8661 to 0.9449 in (22.0 to 24. 0 mm)
CO level 2.5%
Weber 34 DMTR 47/250 carburettor (Sport models) Primary venturi Secondary venturi
Venturi diameter 0.8661 in (22.0 mm) 0.9449 in (24.0 mm)
Main jet 0.0421 in (1.07 mm) 0.0500 in (1. 27 mm)
Air correction jet 0.0728 in (1.85 mm) 0.086 6 in (2.20 mm)
Slow running jet 0.0177 in (0.45 mm) 0.0276 in (0. 70 mm)
Slow running air bleed 0.0413 in (1.05 mm) 0.027 6 in (0.70 mm)
Accelerator pump jet 0.0157 in (0.40 mm) ---
Needle valve seat 0.0689 in (1.75 mm)
Accelerator pump output (10 strokes) 8.55 cm
3
Cold starting device Manually operated strangler ch oke
Float level 0.2657 to 0.2854 in (6.75 to 7.25 mm)
Fuel pump
Output 75 litres/hr (16.5 gal/hr)
Actuating lever stroke (C, L and CL) 2.4 to 2.6 mm (0.0949 to 0.1024 in)
Actuating lever stroke (Sport) 2.4 to 2.9 mm (0.09 49 to 0.1142 in)
Delivery pressure at 4000 engine rpm 0.17 kgf/cm2 (2.55 Ibf/in2)
and fuel temp 30°C (86°F)
lgnition system
Distributor
Type and code Magneti Marelli S155HX
Automatic centrifugal advance 25° ± 2° at 4500 rpm
Condenser capacity (50 to 1000 Hz) 0.20 to 0.25 µF
Clutch
Lining outer diameter 181.5 mm (7.146 in)
Lining inner diameter 127.0 mm (5.0 in)
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Lamps
Headlamps (C, L and CL)
Headlamps (Sport)
Brake and rear light
Turn indicators
Reversing lights
Parking lights
Number plate
Courtesy light
Boot light
Turn repeaters
Cigar lighter light
Instrument panel
Ignition warning
Turn indicator warning
Headlamp warning
Coolant temperature warning (L models)
Oil pressure warning
Fuel warning
Hazard warning
Sidelamp (out) warning (Sport only)
Brake warning (Sport only)
Heated rear window warning (Sport only)
40/45 watts
55/60 watts (Halogen)
5/21 watts
21 watts
21 watts
5 watts
5 watts
5 watts
5 watts
4 watts
4 watts
3 watts
3 watts
1.2 watts
1.2 watts
1.2 watts
1.2 watts
1.2 watts
1.2 watts
3 watts
1.2 watts
1.2 watts
Fuses
For fuse details (127 Special, L, C, CL and Sport) see Sections 23 or 24
Steering and suspension (Sport only)
Steering angles
Inner wheel 34° 50’
Outer wheel 32° 10’
Front wheel alignment (toe setting)
Laden 0.079 in (2.0 mm) toe-in to 0.079 in (2.0 mm) toe-o ut
Unladen 0.138 in (3.5 mm) to 0.217 in (5.5 mm) toe-in
Roadwheels
Size 4½ B x 13
Tyres 135 SR-13 or 155/70 SR-13
All 1049 cc models Ibf ft kgf m
Main bearing cap bolts 59 8.2
Engine mounting securing bolts 43 6
Cylinder head to block bolts and nuts:
1 st stage 30 4.1
2nd stage 45 6.2
Final stage 61 8.5
Manifold to head nuts 20 2.8
Connecting rod big-end nuts 38 5.2
Flywheel to crankshaft bolts 61 8.5
Driven gear (Plastic) to camshaft retaining bolt 87 12
Driven gear (steel) to camshaft retaining bolt 87 1 2
Camshaft cap nuts 14 2