Creative Engineering ROCK-A-FIRE EXPLOSION - Page 71

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Hinges

Cont.

4.

If

you

must

replace

a

bearing

while

the

hinge

is

still

attached

to

the

character,

for

time

reasons,

or

the

hinge

is

welded

to

the

frame

and

is

unremovable,

(See

pages

3-042

thru

3-093)

or

if

an

Arbor

Press

is

unavailable.

a.

Tap

out

the

defective

bearing

using

a

7/16"

steel

pin

and

a

Hammer.

b.

Place

a

piece

of

wood

on

top

of

the

new

bearing

and

tap

it

into

place

using

a

hammer.

It

is

critical

to

the

operation

of

the

hinge

that

the

bearing

has

a

tight

fitting

press,

and

is

pressed

in

straight,

so

be

very

careful.

c.

If

you

cannot

get

a

good

press

on

the

bearing,

mar

the

inside

of

the

hole

using

a

Awl.

If

you

still

cannot

get

a

tight

press,

replace

the

hinge.

H.

For

a

drawing

of

the

new

style

hinges

used

in

the

show

refer

to

Pages

3-038

thru

3-041.

You

will

notice

that

in

the

assembly

drawings

of

all

the

hinges,

their

are

2,

5/16"

Load

Washers

(Part

#28-085-125)

and

2,

5/16"

Flat

Washers

used.

The

Flat

Washers,

have

2

types

used

one

is

a

5/16"

Stainless

Steel

Washer

(Part

#28-045-960)

and

the

other

is

a

5/16"

Ground

Thrust

Washer

(Part

#28-045-961).

In

the

case

of

all

hinge

assemblies

except

the

M.U.M.

(Male

Uni-Mount)

to

the

F.U.M.

(Female

Uni-Mount)

and

the

F.U.M.

to

the

Stud

mount,

the

washer

to

use

is

the

5/16"

Ground

Thrust

Washer.

For

the

M.U.M.

and

F.U.M.

type

hinges

use

the

Stainless

Steel

Washer.

The

purpose

of

these

load

and

flat

washers

is

to

decrease

the

side

play

in

an

assembled

hinge

to

a

minimum,

so

the

use

of

the

washers

may

vary

with

each

hinge,

assemble

using

your

own

discretion.

The

assembly

of

the

hinges

takes

practice

and

is

difficult,

use

an

Awl

or

small

pin

to

align

the

washers,

be

careful

and

always

grease

the

needle

bearing

before

assembly.

3-034