Section 04 ENGINE
Subsection 07 (EXHAUST SYSTEM)
04-07-6 SMR2000-049_04_07A.FM
Test
– Use compressed air at 124 kPa (18 PSI) to pres-
surize tuned pipe.
NOTE: Prior to verifying leaks, plug all holes and
pressurize tuned pipe while immerging it in water.
CAUTION: Always ensure water passages are
not blocked partially or completely while weld-
ing tuned pipe.
INSTALLATION
Installation is essentially the reverse of removal
procedures. However, pay particular attention to
the following.
Exhaust Manifold
Make sure gasket(s) no. 17 are properly posi-
tioned prior to finalizing manifold installation.
Apply Molykote 111 on threads of Allen screws
no. 12.
Install and hand tighten Allen screws no. 12 as per
following picture.
1. M10 x 60 Allen screws
2. M10 x 110 Allen screws
Torque Allen screws to 24 N•m (17 lbf•ft) as per fol-
lowing illustrated sequence. Repeat the procedure,
retightening Allen screws to 40 N•m (30 lbf•ft).
Tuned Pipe
Make sure to install the sealing ring no. 15 on
tuned pipe cone if it was removed.
TYPICAL
1. Sealing ring
Apply a thin layer of Ultra Copper heat resistant
sealant (P/N 413 710 300) all around sealing ring
no. 15.
CAUTION: It is very important that the threads
are free of debris before installing new self-
locking fasteners. Refer to removal procedure
for the proper thread cleaning procedure.
Clean the “Y” manifold and tuned pipe surfaces.
Screw stud no. 21 into the “Y” manifold. Torque
to 47 N•m (35 lbf•ft).
Install gasket no. 15 on the “Y” manifold.
Install the new bushing no. 18.
F06D1YB
7 4 1 5
8 2
3 6
F01D69A
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