If
set
is
LP-Gas fueled, the fuel vaporizer and regulator are
attached to the exhaust manifold. Purge the fuel system of LP
gas fuel before disconnecting the fuel line at the vaporizer.
See FUEL
SYSTEM
-
LP-GAS in this section for the recom-
mended purging procedures.
Assembly:
Obtain the required replacement parts
and then proceed as indicated.
1-
Exhaust gas presents the hazard of
severe Dersonal iniurv or death.
To
1.
2.
3.
4.
5.
6.
7.
8.
prevent exhaust leak, installal;g~skets, clamps,
straps, and hardware as speciiied.
Install the exhaust manifold using new gaskets
and tighten thefour manifold screws to thespeci-
fied torque.
Install the 5/16-18 screw, lock washer, and nut
that secure the manifold outlet flange to the mani-
fold support bracket and tighten securely.
Install the cooling system scroll and noise shield
(see Cooling System in this section).
If
no other service is required, install the generator set in the
vehicle before completing the remaining steps.
Install a new gasket between the exhaust mani-
fold and flange connector and secureflangecon-
nector to manifold using 5/16-18 inch screws,
lock washers, and nuts.
Attach the inlet of the muffler to the flange con-
nector using a U-bolt type automotive muffler
clamp
ONLY.
Make certain that muffler inlet pipe
overlaps flange connector a minimum of 1-1/2
inches
(38
mml.
Place muffler strap on muffler and position
it
below cutout in bottom of generatorset drip tray.
Fasten strap to set L-bracket using a 1/4-20 screw
and lock washer. Tighten strap around muffler
using a 1/4-20 screw, lock washer and nut.
If
replacing the original tailpipe, refer to Tailpipe
Recommendations in this section for selecting
and locating the tailpipe. Attach tailpipe to outlet
end of muffler and secure using a 1-1/2 inch U-
bolt type automatic muffler clamp
ONLY.
Support the tailpipe using a shock mounted sup-
port hanger with clamp.
-1
Angular mounting of muffler and
tailpipe hanger brackets can result
in exhaust system damage since excessive vibration
transfered
to
the vehicle is caused by angularmount-
ing. Mount muffler and tallpipe hanger brackets
directly above the component supporfed, not at an
angle.
9.
10.
Run the generator set for five minutes and check
entire exhaust system (visually and audibly) for
leaks or excessive noise. Correct as required.
Clean spark arrester muffler every 100 hours of
operation. Remove 1/8 inch pipe plug in bottom
of muffler and run set for five minutes. Then
replace pipe plug. Inspect exhaust system (visu-
ally and audibly) for leaks daily (at least every
eight hours
of
running time).
Underfloor Mount
Exhaust
System
Underfloor mount exhaust systems consist of the
exhaust manifold, muffler, clamps, hanger (if
re-
quired), and tailpipe. When service is required, disas-
semble and reassemble as specified in the following
steps.
Disassembly:
1.
2.
3.
4.
Loosen the muffler clamp at the muffler inlet (see
Figure 6-2) and remove the muffler support
bracket screws.
Loosen tailpipe hanger (if used) and remove the
muffler and tailpipe assembly.
Completion of the remaining steps requiresthat the generator
set be partially removed from the vehicle. Refer to the Prepar-
ing to Service section for the set removal procedures.
Remove the cooling system scroll and noise
shield (see Cooling System in this section) to
provide access to the exhaust manifold.
Remove the four exhaust manifold screws and lift
off the exhaust manifold and the two manifold
gaskets.
If set
is
LP-Gas fueled, the fuel regulatorlvaporizer must be
removed along with theexhaust manifold. See FUELSYSTEM
-
LP-Gas in this section for the vaporirerlregulator removal
and replacement procedures.
Assembly:
Exhaust gas presents the hazard of
@@&@I
severe personal injury or death.
To
prevent exhaust leaks, install all gaskets, clamps,
straps, and hardware as specified.
1.
2.
3.
4.
5.
6.
6-5
Install the exhaust manifold using new gaskets
and tighten the four manifold screws to thespeci-
fied torque.
Replace the noise shield and scroll (refer to the
Cooling System in this section).
if no other service is required, install the generator set in the
vehicle before completing the remaining steps.
Place a U-bolt type automotive muffler clamp in
position on the exhaust manifold (near elbow)
prior to installing muffler.
Place muffler in position on
set
making certain
that muffler inlet pipe overlaps exhaust manifold
a minimum of 1-1/2 inches
(38
mm).
Install the two 1/4-20 screws and lock washers
that secure the muffler support bracket to the set
and tighten muffler clamp.
If replacing the original tailpipe, refer to the Tail-
pipe Recommendationssection for selecting and
locating the tailpipe. Attach tailpipe to outlet end
Redistribution or publication of this document
by any means, is strictly prohibited.
Redistribution or publication of this document
by any means, is strictly prohibited.
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