Main bearings

Make

Fiat

Model

Seicento Factory Service Manual

Year

1998–2010

Section

Operative data › Main bearings

00 General information and technical dataMain bearings

(Continued)

Main bearings

Main bearing thickness (mm)			Validity
CL.1	CL.2	CL.3
1.832 - 1.838	1.837 - 1.843	–	899
		1108
	1.836 - 1.840	1.841 - 1.845	1.846 - 1.850

Main bearing undersizing (mm)	Validity
0.254 - 0.508	899   1108

Main bearing - journal clearance			Validity
CL.1	CL.2	CL.3
0.026 - 0.061	–	–	899
0.025 - 0.043	0.027 - 0.045	0.029 - 0.047	1108

Half thrust ring thickness (mm)	Validity
2.310 - 2.360	899   1108

Half thrust ring oversizing	Validity
0.127	899   1108

Axial play (mm)	Validity
0.060 - 0.260	899
0.055 - 0.265	1108

1028 CONNECTING ROADS AND PISTONS

Pistons

Outer diameter *(mm)			Validity
CL.A	CL.B	CL.C
64.955 - 64.966	64.965 - 64.975	64.975 - 64.985	899
69.960 - 69.970	69.970 - 69.980	69.980 - 69.990	1108

CL.D	CL.E	Validity
64.985 - 64.995	64.995 - 65.005	899

(*): to be measured perpendicularly with respect to the pin from a distance from the lower edge of: 14 mm (899 engine ); 8 mm (1108 engine)

Weight difference between pistons (g)	Validity
±5	899   1108

Piston oversizing	Validity
0.4	899   1108

Piston - cylinder lining clearance (mm)	Validity
0.040 - 0.060	899
0.030 - 0.050	1108

Piston pin seat (mm)	Validity
19.986 - 19.991	899
17.982 - 17.986	1108

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01 General