Repair Service Manual

REPAIR MANUAL
1
LOMBARDINI 523 MPI engine
TIGHTENING TORQUES
Table of tightening torques for the main components
DESCRIPTION
DIAMETER x PITCH
(mm)
TIGHTENING TORQUE (Nm)
Connecting rod
8x1
40
Rocker cover
6x1
9
Casing (crankshaft fastening screws)
M 10
50
Casing (one-piece fastening screws)
M 6
10
Timing belt roller nut
M 10
40
Rocker stud holder nut
10x1.5
40
Oil sealing ring flange screw (flywheel side)
M 6
12
Crankshaft pulley screw (timing side)
16x1.5 sin
180(1)*
Camshaft pulley screw
10x1.25
50
Timing shaft bearing panel
M 6x1
10
Camshaft holder flange
M 6x1
10
Small closing flange
M 6x1
10
Suction manifold fastening screw
M 6x1
10
Revolution sensor holder fastening screw
M 6x1
10
Revolution sensor fastening screw
M 8x1.25
10
Oil pressure switch
25
Oil plug
12x1.5
40
Engine cylinder head screw
12x1.5
(2)*
Flywheel screw
80
Coolant thermostat
10x1.5
30
(1)* Lubricate the lower part of the screw and pulley centre with some « Molysilp »
(2)* For more precise information see « Fitting the cylinder head »