Maserati 4200cc F136 UC - F136 UD

Engine Overhaul

Assembly Procedure

Positioning of big end bearings

The half-bearings and connecting rod must only be assembled after the necessary dimensional checks have been performed. For assembly of the half-bearings, refer to the following identification table.

CONNECTING ROD PIN TABLE Seat displacement =0.016

CONNECTING ROD PIN CONNECTING ROD SEAT

CONNECTING ROD PIN CONNECTING ROD SEAT

47.129 - 47.135 CLASS X RED: 1.730-1.735

47.136 - 47.142 CLASS Y

BLUE : 1.735-1.740

CONNECTING ROD PIN CRANKSHAFT

43.630 43.637 CLASS X

MINIMUM NOMINAL BACKLASH: 0.022 MINIMUM EFFECTIVE BACKLASH: 0.038 MAXIMUM NOMINAL BACKLASH: 0.045 MAXIMUM EFFECTIVE BACKLASH: 0.061 BLUE: 1.735-1.740 MINIMUM NOMINAL BACKLASH: 0.026 MINIMUM EFFECTIVE BACKLASH: 0.034

MINIMUM NOMINAL BACKLASH: 0.019 MINIMUM EFFECTIVE BACKLASH: 0.035

MINIMUM NOMINAL BACKLASH: 0.017 MINIMUM EFFECTIVE BACKLASH: 0.033 MAXIMUM NOMINAL BACKLASH: 0.041 MAXIMUM EFFECTIVE BACKLASH: 0.057 MAXIMUM NOMINAL BACKLASH: 0.042 MAXIMUM EFFECTIVE BACKLASH: 0.058 * BLACK: 1.740-1.745

CONNECTING ROD PIN CRANKSHAFT

43.621 43.629 CLASS Y

MAXIMUM NOMINAL BACKLASH: 0.050 MAXIMUM EFFECTIVE BACKLASH: 0.058

* Currently not available as a spare

Insert the half-bearings in their respective housings both on the connecting rod and on the cap. Note that the bearing has the same width as the connecting rod head. After fitting, the part not occupied by the bearing must face towards the bevelled part of the crankshaft shoulder.

Maserati Academy

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