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9 - 4
ENGINE
GEN ERAL I N FORM AT I ON (Cont inue d)
P la st iga ge in pla ce be a ssem bled. Tigh t en t h e r od ca p
n u t s t o r equ ir ed t or qu e. (Refer t o t h e t or qu e specifi-
ca t ion s a t t h e r ea r of t h e en gin e's sect ion ). D O N OT
ro ta te th e c ra n k s h a ft o r th e P la s tig a g e m a y be
s m e a re d , g iv in g in a c c u ra te re s u lts .
(4) Rem ove t h e bea r in g ca p a n d com pa r e t h e widt h
of t h e fla t t en ed P la st iga ge wit h t h e sca le pr ovided on
t h e pa cka ge (F ig. 3). P la st iga ge gen er a lly com es in 2
sca les (on e sca le is in in ch es a n d t h e ot h er is a m et -
r ic sca le). Loca t e t h e ba n d closest t o t h e sa m e widt h .
Th is ba n d sh ows t h e a m ou n t of clea r a n ce. Differ-
en ces in r ea din gs bet ween t h e en ds in dica t e t h e
a m ou n t of t a per pr esen t . Recor d a ll r ea din gs t a ken
(r efer t o E n gin e Specifica t ion s).
(5) P la st iga ge is a va ila ble in a va r iet y of clea r a n ce
r a n ges. Th e 0.025-0.076 m m (0.001-0.003 in ch ) r a n ge
is u su a lly t h e m ost a ppr opr ia t e for ch eckin g en gin e
bea r in g clea r a n ces.
REPAIR DAMAGED OR WORN THREADS
Da m a ged or wor n t h r ea ds ca n be r epa ir ed. E ssen -
t ia lly, t h is r epa ir con sist s of:
• Dr illin g ou t wor n or da m a ged t h r ea ds.
• Ta ppin g t h e h ole wit h a specia l H eli-Coil Ta p, or
equ iva len t .
• In st a llin g a n in ser t in t o t h e t a pped h ole t o br in g
t h e h ole ba ck t o it s or igin a l t h r ea d size.
CAUTION: Be sure that the tapped holes maintain
the original center line.
H eli-Coil t ools a n d in ser t s a r e r ea dily a va ila ble
fr om a u t om ot ive pa r t s jobber s.
SERVICE ENGINE ASSEMBL Y (SHORT BLOCK)
A ser vice r epla cem en t en gin e a ssem bly (sh or t
block) m a y be in st a lled wh en ever t h e or igin a l cylin -
der block is defect ive or da m a ged beyon d r epa ir. It
con sist s of t h e cylin der block, cr a n ksh a ft , pist on a n d
r od a ssem blies. If n eeded, t h e ca m sh a ft m u st be pr o-
cu r ed sepa r a t ely a n d in st a lled befor e t h e en gin e is
in st a lled in t h e veh icle.
A sh or t block is iden t ified wit h t h e let t er "S"
st a m ped on t h e sa m e m a ch in ed su r fa ce wh er e t h e
bu ild da t e code is st a m ped for com plet e en gin e
a ssem blies.
In st a lla t ion in clu des t h e t r a n sfer of com pon en t s
fr om t h e defect ive or da m a ged or igin a l en gin e. F ol-
low t h e a ppr opr ia t e pr ocedu r es for clea n in g, in spec-
t ion a n d t or qu e t igh t en in g.
HYDROSTA TIC LOCK
Wh en a n en gin e is su spect ed of h ydr ost a t ic lock
(r ega r dless of wh a t ca u sed t h e pr oblem ), follow t h e
st eps below.
(1) P er for m t h e F u el P r essu r e Relea se P r ocedu r e
(r efer t o Gr ou p 14, F u el Syst em ).
(2) Discon n ect t h e n ega t ive ca ble fr om t h e ba t t er y.
(3) In spect
a ir
clea n er, in du ct ion
in t a ke m a n ifold t o en su r e syst em is dr y a n d clea r of
for eign m a t er ia l.
(4) P la ce a sh op t owel a r ou n d t h e spa r k plu gs t o
ca t ch a n y flu id t h a t m a y possibly be u n der pr essu r e
in t h e cylin der h ea d. Rem ove t h e plu gs fr om t h e
en gin e.
CAUTION: DO NOT use the starter motor to rotate
the crankshaft. Severe damage could occur.
(5) Wit h a ll spa r k plu gs r em oved, r ot a t e t h e cr a n k-
sh a ft u sin g a br ea ker ba r a n d socket .
(6) Iden t ify t h e flu id in t h e cylin der s (i.e. coola n t ,
fu el, oil, et c.).
(7) Ma ke su r e a ll flu id h a s been r em oved fr om t h e
cylin der s.
(8) Repa ir en gin e or com pon en t s a s n ecessa r y t o
pr even t t h is pr oblem fr om occu r r in g a ga in .
(9) Squ ir t en gin e oil in t o t h e cylin der s t o lu br ica t e
t h e wa lls. Th is will pr even t da m a ge on r est a r t .
(10) In st a ll n ew spa r k plu gs. Tigh t en t h e spa r k
plu gs t o 37 N·m (27 ft . lbs.) t or qu e.
(11) Dr a in en gin e oil. Rem ove a n d disca r d t h e oil
filt er.
(12) In st a ll t h e dr a in plu g. Tigh t en t h e plu g t o 34
N·m (25 ft . lbs.) t or qu e.
(13) In st a ll a n ew oil filt er.
(14) F ill en gin e cr a n kca se wit h
a m ou n t a n d gr a de of oil (r efer t o Gr ou p 0, Lu br ica -
t ion a n d Ma in t en a n ce).
(15) Con n ect t h e n ega t ive ca ble t o t h e ba t t er y.
(16) St a r t t h e en gin e a n d ch eck for a n y lea ks.
ENGINE OIL SERVICE
WARNING: NEW OR USED ENGINE OIL CAN BE
IRRITATING TO THE SKIN. AVOID PROLONGED OR
REPEATED SKIN CONTACT WITH ENGINE OIL.
CONTAMINANTS IN USED ENGINE OIL, CAUSED BY
INTERNAL COMBUSTION, CAN BE HAZARDOUS TO
YOUR HEALTH. THOROUGHLY WASH EXPOSED
SKIN WITH SOAP AND WATER. DO NOT WASH
SKIN WITH GASOLINE, DIESEL FUEL, THINNER, OR
SOLVENTS, HEALTH PROBLEMS CAN RESULT. DO
NOT POLLUTE, DISPOSE OF USED ENGINE OIL
PROPERLY.
ENGINE OIL SPECIFICA TION
CAUTION: Do not use non-detergent or straight
mineral oil when adding or changing crankcase
lubricant. Engine failure can result.
X J
syst em
a n d
t h e specified
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