Jeep Cherokee 1999 Electronic Service Manual page 1172

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EXHAUST SYSTEM AND TURBOCHARGER
GENERAL INFORMA TION
EXHAUST HEAT SHIELDS . . . . . . . . . . . . . . . . . 1
EXHAUST SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 1
REMOVAL AND INSTALLA TION
EXHAUST MANIFOLD AND TURBOCHARGER
(LHD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
EXHAUST MANIFOLD AND TURBOCHARGER
(RHD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GEN ERAL I N FORM AT I ON
EXHAUST SYSTEM
Th e ba sic exh a u st syst em con sist s of a n en gin e
exh a u st m a n ifold, exh a u st
sh ield(s), m u ffler a n d exh a u st t a ilpipe.
Th e exh a u st syst em u ses a sin gle m u ffler.
Th e exh a u st syst em m u st be pr oper ly a lign ed t o
pr even t st r ess, lea ka ge a n d body con t a ct . If t h e sys-
t em con t a ct s a n y body pa n el, it m a y a m plify objec-
t ion a ble n oises or igin a t in g fr om t h e en gin e or body.
Wh en in spect in g a n exh a u st syst em , cr it ica lly
in spect for cr a cked or loose join t s, st r ipped scr ew or
bolt t h r ea ds, cor r osion da m a ge a n d wor n , cr a cked or
br oken h a n ger s. Repla ce a ll com pon en t s t h a t a r e
ba dly cor r oded or da m a ged. DO NOT a t t em pt t o
r epa ir.
Wh en r epla cem en t is r equ ir ed, u se or igin a l equ ip-
m en t pa r t s (or equ iva len t ). Th is will a ssu r e pr oper
a lign m en t a n d pr ovide a ccept a ble exh a u st n oise lev-
els.
CAUTION: Avoid application of rust prevention
compounds or undercoating materials to exhaust
system floor pan exhaust heat shields. Light over-
spray near the edges is permitted. Application of
coating will result in excessive floor pan tempera-
tures and objectionable fumes.
CON T EN T S
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pipe, exh a u st h ea t
EXHAUST SYSTEM AND TURBOCHARGER
EXHAUST PIPE . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INTAKE MANIFOLD . . . . . . . . . . . . . . . . . . . . . . 10
MUFFLER AND EXHAUST TAILPIPE . . . . . . . . . . 2
SPECIFICA TIONS
TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . 10
EXHAUST HEA T SHIELDS
E xh a u st h ea t sh ields a r e n eeded t o pr ot ect bot h
t h e veh icle a n d t h e en vir on m en t fr om t h e h igh t em -
per a t u r es (F ig. 1).
DO NOT a llow t h e en gin e t o oper a t e a t fa st idle for
ext en ded per iods (over 5 m in u t es). Th is con dit ion
m a y r esu lt in excessive t em per a t u r es in t h e exh a u st
syst em a n d on t h e floor pa n .
Fig. 1 Heat Shields
11 - 1
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