General installation practices, Factory exhaust manifold bolt removal – 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

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general installation practices

for ease of installation and trouble-free operation

of your banks powerpack

®

, please read this 12-page

Owner’s Manual before starting any work. (If any pages

are missing from this package, please call gale banks

engineering immediately for a replacement). become

thoroughly familiar with all components and phases of

the installation before starting any work.
inspect all components supplied for any foreign

material that may have entered during shipping and

handling.
WarnIng: Motorhomes are very heavy. Whatever

methods are used to elevate the vehicle must be of

sufficient capacity for the vehicle weight involved.

neVer work under any vehicle supported only by a

jack of any kind. dO nOT use concrete blocks or other

masonry items that may collapse under the vehicle

weight.
pay particular attention to the routing of any wires.

keep them away from exhaust heat, moving parts and

sharp edges that may cause cuts or other damage.

route or tie wires away from critical areas as required.

keep all wires a minimum of 6” from hot exhaust parts,

8” or more is recommended whenever possible.
right-hand and left-hand designations refer to the

driver’s right or left, as seated in the vehicle, (i.e.: right-

hand refers to the passenger side of the vehicle, unless

noted otherwise.
the banks motorhome powerpack is designed to fit

class a 460 ford/oshkosh and john deere engine/

chassis combinations. because of different equipment

layouts used by various coach builders, some

accessories and components may have to be relocated

to accommodate the air-intake components of the

banks powerpack.

Notification
The Banks Ram-Air Filter comes pre-

oiled and no oiling is necessary for initial

installation. Service the filter as specified

in the Cleaning and Oiling the Banks Ram-

Air Filter Section of this manual.

facTOry exhausT ManIfOld bOlT reMOval

because of a condition inherent in the factory

design, the exhaust manifolds may crack the

manifold-to-head bolts as manifolds undergo

changes in length from expansion and contraction.

In some cases, these forces may also crack

the exhaust bolt bosses on the cylinder head.

cracked bolts will not show any external damage,

but bolt heads may break off upon removal.
We recommend that you do the following to

minimize the possibility of broken manifold

bolts.

apply a penetrating oil (such as liquid

Wrench) to the area where each exhaust

manifold bolt enters the cylinder head.

If some bolts turn more easily than others,

remove these bolts first. This may reduce

stress on the tighter bolts.

The use of an impact wrench is recommended,

when available. The hammering action of the

impact tool helps loosen the bolts better than the

steady pull of a wrench handle.

If a manifold bolt does break off, it may be

removed by one of the following methods.

1.

if there is enough thread remaining on the

broken bolt to install two nuts, it may be

possible to jam the nuts together to turn the bolt.

Tighten the nuts against each other, then turn the

bolt by turning the inner nut counterclockwise.

2.

if there is some thread protruding from the

head, but not enough to install double nuts,

it may be possible to grip the bolt with a tool such

as a vise-grip pliers.

3.

if the bolt has broken off near or below the

flange surface of the head, it may be drilled

and removed with a screw extractor, such as an

easy-Out. Make sure you drill the pilot hole in the

center of the broken bolt with the proper size drill

for the extractor used. If the hole is not on center,

it may cause the extractor to bite into the threads

in the head, preventing the extractor from turning.

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