Fiat 127 Service Manual
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Fiat 127 Service Manual

1049 cm3
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Fiat 127
3
1049 cm
opis části servisního manuálu

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Summary of Contents for Fiat 127

  • Page 1 Fiat 127 1049 cm opis části servisního manuálu...
  • Page 2 Engine - final assembly Engine removal – 127 Special and 127 from chassis number 1104290 onwards Fuel system ..............
  • Page 3 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 1. Introduction Since its first introduction in 1971 the FIAT engine with a twin choke carburettor. Apart from 127 has undergone a continuing programme of minor body styling changes, the Sport is...

  • Page 4: Specifications

    4.2 pints (2.4 litres) 1049 cc OHC engine General Type number ......… 127 A 000 (C, L and CL); 127 A1.000 (Sport) Bore ......…...
  • Page 5 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 Big-end bearing shell undersize range 0.01; 0.02; 0.03; 0.04 0.254; 0,508; 0.762; 1.016 Gudgeon pin interference fit in small-end: C, L and CL 0.0004 to 0.0017 0.01 to 0.042 Sport 0.0004 to 0.0006...
  • Page 6 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 Crankshaft inches Main bearing journal diameter 1.8972 to 1.898 48.189 to 48.209 Standard main bearing shell thickness 0.0721 to 0.0726 1.831 to 1.845 Main bearing shell undersize range 0.01; 0.02; 0.03; 0.04 0.254;...
  • Page 7 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 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...
  • Page 8 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 Air correction jet 0.0728 in (1.85 mm) Slow running jet 0.0177 in (0.45 mm) Emulsion tube type Accelerator pump jet 0.0157 in (0.40 mm) Needle valve seat 0.0591 in (1.50 mm)
  • Page 9 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 Maximum run-out of driven plate linings 0.2 mm (0.008 in) Travel of release flange, corresponding to a pressure plate displacement of not less than 0.067 in ~1.7 mm) 8.5 mm (0.3346 in)
  • Page 10 Brake warning (Sport only) 1.2 watts Heated rear window warning (Sport only) 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’...
  • Page 11 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 Ignition distributor clamp nut Oil pump to crankcase bolts Cylinder head outlet pipe bolt Water pump/alternator drive pulley nut Alternator bracket to crankcase bolt Alternator to lower bracket bolt Cylinder head upper bracket bolt...
  • Page 12 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3. Engine 1049 cc engine - general 5 If the cylinder head is to be dismantled, before withdrawing the camshaft, have a suitably divided 1 This engine is of overhead camshaft design, container ready so that the valve clearance using shims for valve clearance adjustment.

  • Page 13: Fiat 127 Internet Fan Club (Http://Fiat127.Okruhy.cz) Fiat

    Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 13.1. 1049 cc engine, longitudinal section (Sec.3) 13/34...
  • Page 14 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 13.2. 1049 cc engine, cross section (Sec.3) (The engine is installed inclined 6° rearwards) 14/34...

  • Page 15: Specifications

    Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 12 Refit the main bearing cap bolts and screw them up fingertight. Spin the crankshaft and, if all is well, tighten the bolts to the specified torque load and turn the crankshaft again to check freedom of rotation (photo).
  • Page 16 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.11A Fit the bearing shell ti the main bearing caps… 3.11B …and then fit caps to the crankcase after oiling the shells 3.11C Ensure that each cap is the right way round in its 3.12 Tighten main bearing cap bolts with a torque wrench...
  • Page 17 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.18 The valve depressions in the piston are adjecent to 3.20 Torque tighten the big-end cap nuts the cylinder head studs in the block 3.22A Firts fit outer rotor to the oil pump body…...
  • Page 18 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.25 …and the inner to outer rotor clearance 3.27A Fit the oil pump pressure relief valve plunger and spring… 3.27B …followed by the retainer plate and circlip 3.28 Refit the pump lower half body 3.29 Fit the oil pump to the crankcase...

  • Page 19: Engine

    Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.32 Fitting the crankshaft seal and carrier at flywheel 3.33 …and at the timing cover end and… 3.34 The timing indicator bracket is located behind the two 3.36 Fit the sump to the crankcase...
  • Page 20 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.39 Fitting the auxiliary shaft… 3.40 …and its seal and carrier 3.42 This face of the pulley fits towards the shaft 3.43 Fit the belt tensioner bracket a new gasket to the block …...
  • Page 21 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.46 The bevelled washer is fitted bevel outwards and is 3.47 …the crankshaft toothed pulley followed by… 3.48A Valve guide oil seal 3.48B Inserting a valve followed by… 3.48C …the lower spring seat and springs…...
  • Page 22 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.48E A magnet is useful for refitting the split collets 3.48F After assembly a sharp tap on the valve stem will help to bed the parts in 3.49A Use a small pointed tool to …...
  • Page 23 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 32 Carefully ease the lip of the seal onto the the bottom bolt through the kidney-shaped slot. spigot and secure the carrier with the bolts and Note that this latter bolt has an additional, large washers (photo).
  • Page 24 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 progressively until the bearing halves meet. 59 Set the crankshaft by using a spanner on the 53 Oil the camshaft seal and carefully fit it with pulley retaining nut and aligning the mark on the...
  • Page 25 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.50 Position the camshaft in the cylinder head … 3.51 …and fit the half bearings and bridge plates 3.53 Fit the camshaft seal in its carrier to the cylinder head.
  • Page 26 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 extension length and the torque wrench length and is calculated by using the formula: where A is the specified torque loading (Ibf ft or kgf m), B is the torque to be set, or read, when...
  • Page 27 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.60 The cylinder head gasket is fitted ALTO upwards 3.61 Lower the cylinder head onto the block 3.62A Tighten the cylinder head bolts and nuts to the 3.62B These cylinder head nuts might be difficult to torque...
  • Page 28 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 when initially inserted; then reinsert it into the engine. Ideally the contact points should be just breaking with the rotor opposite the correct numbered terminal in the cap. If this is not the case, repeat on a trial and error basis until this is achieved (photo).
  • Page 29 It is important that the FIAT agent. As well as having the right tools he clearances are set correctly, otherwise the...
  • Page 30 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 3.88A With the tappet depressed… 3.88B …the shim can be removed 3.91 Fit the camshaft cover with a new gasket 3.93A The two-pieces gasket for manifold joint… 3.93B …and the manifolds fitted 4.1 Weber 32 ICEV carburettor...

  • Page 31: Fuel System

    5 Disconnect the distributor vacuum pipe (photo). 6 Disconnect the fuel flow and return Engine removal - 127 Special and 127 hoses 7 Disconnect the coolant hoses from the from chassis number 1104290 onwards...
  • Page 32 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 altering the throttle speed screw. Weber dual venturi carburettor 16 On earlier carburettors, or if new components have been fitted to carburettors having a Removal and refitting tamperproof screw, then the slow-running and...
  • Page 33 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 22 To check the float setting, hold the is an economical proposition if the original one carburettor cover vertically with the float hanging has seen service to a high mileage. Very often a down.
  • Page 34 Fiat 127 Internet Fan Club (http://fiat127.okruhy.cz) Fiat 127 - 1050 …….. nedokončeno 34/34...

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