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u persedes page 04
15, c
lass
1.
ENGINE
CYLINDER
HEAD
·
REFITTING
PREPARATION
Clean the face of the block• (including the
threaded holes in the
block)
taking care
:
10
place an old piston ring on tup of all four
pistons,
· 10
seal off the oil return holes.
-
10
clean out the petrol jrain hole
(1)
on XM
KF 6 and KF 5 blocks,
(2)
on XN1 - XN2 and
XM7
blocks.
WARNING · Do
not scrape
the
carbon fro
m
the
piston crowns.
- Clean and
check
the cam followers.
Remove all burrs trom the face of XN1 • XN2
and XM7 blocks.
Clean
:
the face of the cylinder head.*
•
1
he cylinder head bolts,
•
the push rods (check them for distorsion).
Check the surface condition of the cylinder
head
:
maximum out of true
:
0.05
mm.
If the
cl
istortion is more, skim the faf'e
norrral cyl ndl·' head hPight
(a)
•12.5
±
0.
15
mm
.
height after skimming (a) :
mtn.
92 ± 0. 15
mm.
•
Use MAGISTAIP
wear
protective gloves
- apply t he product using a brush (do no; let the
Mag1strip run down into the block)
- leave it tor ten minutes then scrape off the
deposit using a plastic
or
wood
scraper.
WVIW. E. CJ llCJ .OrG
12
12 E
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