JBA 40-1514 - Manual

INSTALLATION INSTRUCTIONS
**Inst allation recommendation:
JBA recommends in most cases that the vehicle be taken to a reputable exhaust shop.
Parts List
40-1514
A. Head pipe 1
B. Muffler 1
1997-99 Jeep Wrangler TJ L6-4.0L
C. Tail pipe with tip 1
D. 2-1/4" clamp 1 Compatible with most trailer hitches, rear exit
E. 2-1/2" clamp 1
F. 2-1/2" clamp 1
TOOLS RECOMMENDED:
Ratchet
9/16 std socket
15mm std socket
9/16 deep wall socket
7/8''open end wrench
Channel lock pliers 10''
Reciprocating saw or hack saw
Pry bar
Anti seize
Spray lube
Rubber mallet
D
B
F E
A
C
TO START:
2. Disconnect negative battery cable and
allow vehicle exhaust to cool.
1. Remove and inventory new JBA
exhaust.
3. With vehicle raised and properly sup­
ported, remove clamp at front of muffler,
using a 15mm socket.
4. Using a reciprocating saw or hack saw,
cut tail pipe off approximately 2'' behind
rear of muffler. SEE NOTE: #1
7. Remove tail pipe from rear of vehicle.
8. Remove oxygen sensor from catalytic
converter in front of muffler, using a
7/8''open end wrench. Using some form of
heat and force remove muffler assembly
without damaging catalytic converter pipe.
9. Reinstall oxygen sensor. Install JBA
head pipe (A) aligning notch with locating
pin. NOTE: You may have to tap on with
rubber mallet.
12. Install and position 2-1/2'' clamp (E)
over muffler front slip joint, and hand tight­
en only at this time. NOTE: USE ANTI
SEIZE ON THREADS. SEE NOTE #2
13. Install tail pipe (C) from rear of vehicle
and slip front hanger into lower hole of
rubber grommet. 19. After installation, retightened all
clamps.
20. Tack weld all slip joint connections in
3 spots.
17. Install and position 2-1/2''clamp (F)
over rear muffler slip joint, and hand tight­
en only at this time. NOTE: USE ANTI
SEIZE ON THREADS. SEE NOTE: #2
18. Rotate tail pipe (C) to desired position,
checking hanger alignment, and proper
clearance. Tighten clamp (F) completely
using a 9/16''deep wall socket, making
sure slip joint is bottomed out. NOTE:
USE ANTI SEIZE ON THREADS
SEE NOTE: #2
5. Spray lubricant on front and rear tail
pipe hanger rubber grommets at lower
holes.
10. Install 2 1/4''clamp (D) over head pipe
(A) slip joint, and tighten completely using
a 9/16''socket. NOTE: USE ANTI SEIZE
ON THREADS. SEE NOTE: #2
15. Install rear tail pipe hanger into
lower hole of rubber grommet.
14. Install tail pipe into rear muffler slip
joint.
21. Lower vehicle and reattach the nega­
tive battery cable.
NOTES:
1. If vehicle is raised with vehicle lift, step
#4 can be eliminated. The muffler assem­
bly can be removed in one piece by
removing right rear shock, and raising
right rear frame rail.
2. If anti seize is not use on threads of
clamps before tightening, the nut's will
gall, and clamp will break.
11. Install muffler (B) on head pipe (A)
with offset to rear and toward drivers side.
NOTE: make sure slip joint is bottomed
16. Align muffler (B) and tighten 2-1/2''
clamp (E) completely using a 9/16''
deep wall socket. NOTE: USE ANTI
SEIZE ON THREADS. SEE NOTE: #2
6. Using a pair of channel lock pliers,
remove front and rear tail pipe hangers
from lower hole in rubber grommets.
out.
17210
We recommend t aking the truck to a muffler shop and having all slip connections tack welded.
2/5/03