Figure 5 figure 6, Air silencer modification – Banks Power Ford Motorhomes: (Gas ’93 - 98 7.5L Class-A) PowerPack System (Class-A, JD_OK chassis) For Use w_ 460 EFI Engine User Manual

Page 8

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the removed section. Join the tube halves with

the 1-inch I.d. silicone hose and two no. 16 hose

clamps, provided. Make sure the tube ends are

pushed about one inch into the hose.

reinstall the catalytic converter and air

injection tubes on y-pipe flange. use new

gasket provided.

bolt the air injection tube to the tabs on the

right hand torquetube and y-pipe assembly

using four

5

16

-18 x 1” hex bolts, eight

5

16

sae washers

and four

5

16

-18 crimp-lock nuts. See Figure

4.

carefully remove the oxygen sensor from the

original head-pipe assembly and reinstall in

the banks y-pipe. re-connect the wiring. If wiring

will not reach sensor connector, trace wire loom

forward to locate excess wire bundle in engine

compartment. untie bundle and route wire as

required.

install the banks dynaflow muffler to the

catalytic converter. The stainless-steel

adapter supplied mounts between the converter

and muffler. note the alignment notch on the

adapter. use one 2

1

2

-inch and 3- inch u-clamp to

complete the assembly. See Figure

1.

attach the existing front muffler hanger

bracket to the 3-inch u-clamp to support the

front of the muffler.

Install the Monster tailpipe assembly. use

existing hangers in vehicle to support tailpipe.

the following combinations of tailpipe components

should be used to cover the wheelbases listed. do

not snug u-clamps until you are satisfied with pipe

alignment.

A. if the coach is a 178” wheelbase model, install

the tailpipe bend directly into the muffler outlet.
B. if the coach is a 208” wheelbase model, install

a 32

1

4

” intermediate pipe between the muffler and

the tailpipe. If the wheelbase is between 178” and

208”, shorten the intermediate pipe as necessary.
C. if the coach is a 228” wheelbase model, install

a 52

1

4

” intermediate pipe between the muffler and

tailpipe. If the wheelbase is between 228” and

208”, shorten the intermediate pipe as necessary.

an additional u-clamp is provided with this pipe for

hanging.

install the chrome tip and chrome tailpipe

heat shield on the tailpipe as shown in

Figure 1. tip may be slid in or out on the tailpipe to

match the body width.
NOTE: If possible, leave tailpipe within 2” of end

of chrome tip inside the tip. This will protect the

chrome from changing color from high exhaust

heat. Shorten tailpipe if required.

cut the 6 x 14” foil heat blanket, provided,

lengthwise to form two 3” x 14” strips. Wrap

one strip lengthwise around each brakeline tube

where the brakeline tube is closest to the exhaust

manifold tubing on each side of the engine. secure

foil strips with wire ties provided. dO nOT wrap the

foil heat blanket material around the TorqueTubes.

the heat blanket will not survive if it is in direct

contact with the manifold tubing.
NOTE: Brake lines may be bent somewhat to

provide additional clearance to the TorqueTubes.

Be careful not to kink brake lines. Vapor recovery

line on right side of engine may also need to be

bent back if it is within 1

1

2

” of TorqueTubes.

29.

28.

27.

26.

25.

24.

23.

22.

8

figure 5

figure 6

cut off tapered

portion here

air silencer modification

p.n. 96347

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