Skoda 105 s 1980 Workshop Manual page 32

Fig.2.3/6 - Position of Cylinder Liners, Pistons
ond Connecting Rods in Engine
1 - Proiectlon of cylinder liners obove the top
foce of the cylinder block (0.125 - 0.155 mm)
2 - Connecting rod splosh hole
'3 -
Arrow on the piston heod pointlng toword
the comshoft
4 - Comshoft
Fig.2.317 - Pilot Ring for Piston Rings
Dimensions of pilot ring to motch cylinder
liner diometer:
d i o . 6 8 D : 6 8 H 7
dio. 68.25
D :68.25 H 7
dio. 68.50
D :68.50 H 7
d i a . 7 2 D : 7 2
H 7
14. Hoving fitted the piston rings ond con-
nectlng rods on the pistons, turn the piston ring
gops so thot they ore stoggered through 120o.
Coot the entire surfoce of the piston with the
fitted rings with oll ond insert the pistons
ossembled with the connecting rods into the
liners in the sequence of the corresponding
numbers of cylinders ond connecting rods. Moke
sure thot the orrow in the piston heod points
toword the morking of the cylinder liners, l.e.
toward the comshoft, ofter the ossembly with
the cylinder block. This is importont in thot it
does owoy with odditionol turning of the pis-
tons in the liner ond o posslble displocement
of the piston ring gops.
Smeor the top surfoce of the cylinder block
with point or o seoling compound before instol-
ling the liners with the pistons ond connectlng
rods into the cylinders in the order of their
n u m b e r i n g .
It is odvisoble to prepore o sheet sleeve or
o pilot ring occording to Fig. 2.317 to com-
press the piston rings when fitting the piston
Into the cylinder liners. Force the piston into
the sleeve or pilot ring so thot the piston heod
is flush with its edge or protrudes sllghtly
over it, locote the piston on the liner, ond then
force down the piston through the sleeve or
pilot ring into the liner.
15. Ploce suitoble ouxiliory devices over two
holes for cylinder heod bolts, for exomple
lorge-diometer woshers, ond screw them down
Fig. 2.3/8 - Fitting Piston into Cylinder Liner
U s i n g t h e P i l o t R l n g
1 - p i l o t r i n g
2 - c y l i n d e r l i n e r
3 2