Jeep Cherokee 1999 Electronic Service Manual page 1173

11 - 2 EXHAUST SYSTEM AND TURBOCHARGER
REM OVAL AN D I N STALLAT I ON
EXHAUST PIPE
WARNING: IF TORCHES ARE USED WHEN WORK-
ING ON THE EXHAUST SYSTEM, DO NOT ALLOW
THE FLAME NEAR THE FUEL LINES.
REMOVAL
(1) Ra ise a n d su ppor t t h e veh icle.
(2) Sa t u r a t e t h e bolt s a n d n u t s a t t u r bo down pipe
t o exh a u st pipe wit h h ea t va lve lu br ica n t . Allow 5
m in u t es for pen et r a t ion .
(3) Discon n ect bolt s fr om exh a u st pipe t o t u r bo
down pipe (F ig. 2).
Fig. 2 Exhaust Down Pipe to Front Exhaust Pipe
(4) Rem ove t h e cla m p n u t s a t m u ffler (F ig. 3). To
r em ove t h e exh a u st pipe fr om t h e m u ffler, a pply h ea t
u n t il t h e m et a l becom es ch er r y r ed. Discon n ect t h e
exh a u st pipe fr om t h e m u ffler. Rem ove t h e exh a u st
pipe.
Fig. 3 Front Pipe to Muffler
INSTALLA TION
(1) Assem ble exh a u st pipe t o m u ffler, loosely t o
per m it pr oper a lign m en t of a ll pa r t s.
(2) Con n ect t h e exh a u st pipe t o t h e t u r bo down
pipe m a n ifold. Tigh t en t h e bolt s t o 22.5 N·m t or qu e.
(3) Use a n ew cla m p a n d t igh t en t h e n u t s t o 43
N·m t or qu e.
(4) Lower t h e veh icle.
(5) St a r t t h e en gin e a n d in spect for exh a u st lea ks
a n d exh a u st syst em con t a ct wit h t h e body pa n els.
Adju st t h e a lign m en t , if n eeded.
MUFFLER AND EXHAUST TAILPIPE
All or igin a l equ ipm en t exh a u st syst em s a r e m a n u -
fa ct u r ed wit h t h e exh a u st t a ilpipe welded t o t h e m u f-
fler. Ser vice r epla cem en t
t a ilpipes a r e eit h er cla m ped t oget h er or welded
t oget h er.
WARNING: IF TORCHES ARE USED WHEN WORK-
ING ON THE EXHAUST SYSTEM, DO NOT ALLOW
THE FLAME NEAR THE FUEL LINES.
REMOVAL
(1) Ra ise a n d su ppor t t h e veh icle.
(2) Rem ove t h e fr on t m u ffler cla m p fr om t h e
exh a u st pipe a n d m u ffler con n ect ion .
(3) Rem ove t h e r ea r exh a u st t a ilpipe h a n ger cla m p
a n d r em ove t h e exh a u st t a ilpipe fr om t h e fr on t
exh a u st t a ilpipe h a n ger.
(4) Rem ove t h e exh a u st t a ilpipe a ssem bly fr om t h e
m u ffler.
INSTALLA TION
(1) In st a ll t h e m u ffler on t o t h e exh a u st pipe.
In st a ll t h e cla m p a n d t igh t en t h e n u t s fin ger t igh t .
(2) In st a ll t h e exh a u st t a ilpipe in t o t h e r ea r of t h e
m u ffler.
(3) In st a ll t h e exh a u st t a ilpipe/m u ffler a ssem bly
on t h e r ea r exh a u st t a ilpipe h a n ger. Ma ke su r e t h a t
t h e exh a u st t a ilpipe h a s su fficien t clea r a n ce fr om t h e
floor pa n .
(4) In st a ll t h e r em a in in g cla m ps a n d t h e fr on t
exh a u st t a ilpipe h a n ger.
(5) Tigh t en t h e n u t s on t h e m u ffler-t o-exh a u st pipe
cla m p t o 43 N·m t or qu e.
(6) Tigh t en t h e n u t s on t h e m u ffler-t o-exh a u st pipe
cla m p t o 43 N·m t or qu e.
(7) Lower t h e veh icle.
(8) St a r t t h e en gin e a n d in spect for exh a u st lea ks
a n d exh a u st syst em con t a ct wit h t h e body pa n els.
Adju st t h e a lign m en t , if n eeded.
X J
m u ffler s a n d exh a u st