Replacement - Acura 1994 Integra Service Manual

Replacement
1. As illustrated in the removal steps of this proce-
dure, use a commercially-available air-impact driv-
er attachment modified to fit the diameter of the
valve guides. In most cases. tho same procedure
c a n b e d o n e u s i n g t h e V a l v e G u i d e D r i v e r a n d a
conventional hammer.
COMMERCIALLY AVAILABI,I
VALVE GUIDE DRIVER
RGmov.l rnd In3tlllation
VALVE GUIDE DRIVER, 6.6 mm
0?942 - 6570100
S e l e c t t h e p r o p e r r e p l a c e m e n t g u i d e s a n d c h i l l
t h e m i n t h e f r e e z e r s e c t i o n o f a r e f r i g e r a t o r f o r
about an hour.
Use a hot plate or oven to evenly heat the cylinder
head to 300'F (150'Cl. Monitor the temperature with
a cooking thermometer.
CAUTION:
. Do not use a torch; it may warP the hgad.
. Do not get ths head hottq than 3OO'F 1150"C);
excessive hgat may loos€n thG valvs soat3.
. To avoid burns, usa hoavy glov93 whon handling
the heated cylinder hoad.
-----T_-
l r l
11.3 mm
lo.il,l in)
f
sz --
|
12.21i^l
6-25
4. Working from the camshaft side. use the driver and
an air hammer to drive the guide about 2 mm {0.1
i n ) t o w a r d s t h e c o m b u s t i o n c h a m b e r . T h i s w i l l
knock oft some of the carbon and make removal
eaSrer.
GAUTIOiI:
o Alwrys woar safety goggles or a face shiold
wh6n using tho Eir hammer.
. Hold ths air hammsr directly in lins with the
vrlvr guidc to prsvont damaging tho drivor.
Turn the head over and drive the guide out towatd
the camshaft side of head.
lf a valve guide still won't move, drill it out with a 8
mm (5/16 in) bit, then try again.
CAUTION: Drill guid$ only in oxtremo cases: You
could drmrgo tho cylinder hosd if ths guido br"akr.
VALVE GUIDE DRIVER,6.6 mm
07942 - 65701q)
Remove the new guide{s} from the refrigerator, one
at a time, as you need them.
{cont'd)
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