Creative Engineering ROCK-A-FIRE EXPLOSION - Page 119

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Props

and

Looney

Bird

J.

The

High

Hat

and

Base

Drum

mechanism:

(See

Drawing

Page

3-093)

1.

For

any

problems

in

the

cylinder

refer

to

Pages

3-009

thru

3-011,

and

all

drawings

referred

to

by

that

text.

If

replacement

of

a

cylinder

is

required

refer

to

the

Parts

Catalog

for

part

numbers.

2.

There

are

four

set

screws

used

to

hold

the

rear

mount

pin

(A)

into

place,

keep

them

tight.

Also

keep

the

Shaft

Collars

(B)

tight

against

the

cylinder.

If

the

Shaft

Collars

are

not

kept

tight

the

cylinder

will

mis-align,

and

rebuilding

it

will

be

necessary.

If

the

set

screw

holes

are

striped,

you

can

drill

and

re-tap

the

holes

to

the

next

larger

size

tap.

a.

Detach

the

cylinders

front

mount

from

the

block

attached

to

the

Foot

Pedal.

b.

Unscrew

the

four

bolts

(C)

holding

the

frame

to

the

welded

mount

pieces

(D)

•

c.

The

original

set

screws

used

in

the

assembly

are

8-32

x

1/4"

or

3/8"

long.

So

drill

out

the

hole

or

holes

for

a

10-32

screw.

Run

the

Tap

and

re-assemble

the

mechanism.

Set

the

critical

adjustments.

3.

The

front

mount

of

the

cylinder,

is

attached

to

a

welded

mount

block

(E).

The

cylinder

is

attached

using

a

Fas-Pin

and

set

screws.

The

welded

Mount

Block

(E)

is

then

bolted

to

the

Foot

Pedal.

a.

If

the

weld

breaks,

replace

the

part.

Simply

detach

the

cylinder

and

the

Pedal

from

the

front

mount.

b.

Keep

the

set

screws

tight,

if

the

pivot

hole

elongates

or

enlarges

replace

the

mount.

c.

Drill

out

and

re-tap

the

set

screws

holes

to

the

next

larger

Tap

size,

if

necessary.

3-082