Ruggerini RY 50 - Piston Protrusion and Gasket Selection

35
17-04-2003
01
15-01-2004
DATE
COMPILER TECO/ATI
REG. CODE
1-5302-467
MODEL N°
50707
DATE OF ISSUE
REVISION
ENDORSED
48
VIII
49 50
DISASSEMBLY/REASSEMBLY
Piston protrusion check
To calculate the right thickness for the gasket, the protrusion
between the piston and the cylinder head surface must be
measured.
Use a dial indicator with base plate. Reset to zero while resting on
a surface plate, then position against the cylinder head base plane
as shown in the diagram, so that the dial indicator rod rests
against the piston. Now take the reading.
Repeat the operation in the other three points (going crosswise)
and take the readings.
Calculate the average of these four readings to get the precise
measurement of the protrusion between the piston and the cylinder
head base plane.
Choose the appropriate gasket according to the following table.
Only remove the head gasket from its protective wrapping just
before assembly.
See page 26 when tightening the cylinder head
Having chosen the required thickness, mount the gasket as shown
in the figure (see letter A).
Find the number of notches in zone B to find the thickness of the
gasket when the cylinder head is mounted.
The gasket thickness given in the table is the one obtained with the
gasket mounted and the head torqued.
Head gasket (mm)
05YRroF 57YRroF
noisutorpnotsiPssenkcihTteksaGsehctonforebmuNnoisutorpnotsiPssenkcihTteksaGsehctonforebmuN
054,0÷153,09,00 005,0÷563,010
055,0÷054,01hcton1006,0÷005,01,1hcton1
056,0÷055,01,1sehcton2007,0÷006,02,1sehcton2
057,0÷056,02,1sehcton3
952.0956.on.Ppmupnoitcejnihtiw07YRroF 301YRroF
noisutorpnotsiPssenkcihTteksaGsehctonforebmuNnoisutorpnotsiPssenkcihTteksaGsehctonforebmuN
054,0÷563,09,00 005,0÷014,010
055,0÷054,01hcton1006,0÷015,01,1hcton1
056,0÷055,01,1sehcton2007,0÷016,02,1sehcton2
057,0÷056,02,1sehcton3
182.0956.on.Ppmupnoitcejnihtiw07YRroF 011YRroF
noisutorpnotsiPssenkcihTteksaGsehctonforebmuNnoisutorpnotsiPssenkcihTteksaGsehctonforebmuN
004,0÷563,09,00 005,0÷014,010
005,0÷004,01hcton1006,0÷015,01,1hcton1
006,0÷005,01,1sehcton2007,0÷016,02,1sehcton2
007,0÷006,02,1sehcton3