Valve Guide s
Replacemen t
1. As illustrate d below , us e a commerciall y - availabl e
air-impac t valv e guid e drive r attachmen t modifie d t o
fit th e diameter of th e valv e guides . I n mos t cases ,
th e sam e procedur e ca n b e don e usin g th e specia l
too l an d a conventiona l hammer .
VALVE GUID E DRIVE R(Commerciall y available )
VALVE GUID E DRIVER , 5. 5 m m07742-001010 0
2. Selec t th e prope r replacemen t guide s an d chil l the m
i n th e freeze r sectio n o f a refrigerato r fo r abou t a n hour .
3 . Us e a ho t plat e o r ove n t o evenl y hea t th e cylinde r
hea d t o 300° F (150°C) . Monito r th e temperatur e wit h
a cookin g thermometer .
CAUTION :
D o no t us e a torch ; i t ma y war p th e head .
D o no t ge t th e hea d hotte r tha n 300° F (150°C) ;
excessiv e hea t ma y loose n th e valv e seats .
T o avoi d burns , us e heav y glove s whe n handlin g
th e heate d cylinde r head . 4
. Workin g fro m th e camshaf t side , us e th e drive r an d a n
ai r hamme r t o driv e th e guid e abou t 2 m m (0. 1 in )
toward s th e combustio n chamber . Thi s wil l knoc k of f
som e o f th e carbo n an d mak e remova l easier .
CAUTION :
Alway s wea r safet y goggle s o r a fac e shiel d
whe n drivin g valv e guides .
Hol d th e ai r hamme r directl y i n lin e wit h th e
valv e guid e to preven t damagin g th e driver .
5 . Tur n th e hea d ove r an d driv e th e guid e ou t towar d
th e camshaf t sid e o f th e head .
VALV E GUID E DRIVER , 5. 5 m m0774 2 - 001010 0
6.
If a valv e guid e stil l won' t move , dril l i t ou t wit h a
8 m m (5/1 6 in ) bit , the n tr y again .
CAUTION : Dril l guide s onl y in extrem e cases : yo u
coul d damag e th e cylinde r hea d if th e guid e breaks .
Remov e th e ne w guide s fro m th e freezer , on e a t a
time , a s yo u nee d them .
ProCarManuals.com
Valve Guide s
Replacemen t
I
As illustrate d below , us e a commercially-availabl e
air-impact valv e guid e drive r attachmen t modifie d
to fi t th e diamete r o f th e valv e guides . I n mos t cases ,
th e sam e procedur e ca n b e don e usin g th e specia l
tool an d a conventiona l hammer .
VALVE GUID E DRIVE R(Commerciall y available )
or
VALV E GUID E DRIVER , 5. 5 m m
07742-001010 0
2 . Selec t th e prope r replacemen t guides , an d chil l the m
i n th e freeze r sectio n o f a refrigerato r fo r abou t a n
hour .
3. Us e a ho t plat e o r ove n t o evenl y hea t th e cylinde r
hea d t o 300° F (150°C) . Monito r th e temperatur e wit h
a cookin g thermometer .
CAUTION :
• D o no t us e a torch ; i t ma y war p th e head .
• D o no t ge t th e hea d hotte r tha n 30 0 F (15 0 C) ;
excessiv e hea t ma y loose n th e valv e seats .
• T o avoi d burns , us e heav y glove s whe n handlin g
th e heate d cylinde r head .
4.
5.
Workin g fro m th e camshaf t side , us e th e drive r an d
an ai r hamme r t o driv e th e guid e abou t 2 m m (0. 1 in )
towards the combustio n chamber . Thi s wil l knoc k of f
som e o f th e carbo n an d mak e remova l easier .
CAUTION :
• Alway s wea r safet y goggle s o r a fac e shiel d whe n
drivin g valv e guides .
• Hol d th e ai r hamme r directl y i n lin e wit h th e
valv e guid e t o preven t damagin g th e driver .
Tur n th e hea d over , an d driv e th e guid e ou t towar d
th e camshaf t sid e o f head .
VALV E GUID E DRIVER ,5.5 m m07742-001010 0
If a valv e guid e stil l won' t move , dril l i t ou t wit h a
8 m m (5/1 6 in ) bit , the n tr y again .
CAUTION : Dril l guide s onl y i n extrem e cases ; yo u
coul d damag e th e cylinde r hea d if th e guid e breaks .
6 . Remov e th e ne w guide s fro m th e freezer , on e a t a
time , a s yo u nee d them .
ProCarManuals.com
