2500_Users_Manual- - 第249页

Repair and Replacement Procedures 6. Use a 9/64-inch hex wrench to loosen the four hex screws holding the front and rear carriage shafts to the left end plate. Note: Have an assistant hold the lead screw and shafts durin…

Repair

and

Replacement

Procedures

9.

The

right

lead

screw

bearing

assembly

will

come

away

from

the

right

end

plate

with

the

lead

screw.

Remove

the

bearing

assembly

and

replace

it

with

a

new

bearing

assembly.

10.

Reverse

the

procedure

to

reinstall

all

of

the

components.

Replacing

the

Left

Lead

Screw

Bearing

Assembly

Replacing

the

Lead

Screw

If

the

left

lead

screw

bearing

assembly

fails,

follow

the

steps

below

to

replace

it.

1.

Turn

off

the

2500

and

remove

the

power

cord.

Note:

This

procedure

requires

two

people

to

perform

the

steps

safely.

2.

Slide

the

beam

over

the

programming

station.

3.

Use

a

1/8-inch

hex

wrench

to

remove

the

four

screws

in

the

bearing

cover

plate

on

the

left

end

plate.

4.

Use

a

9/64-inch

hex

wrench

to

loosen

the

four

hex

screws

holding

the

front

and

rear

carriage

shafts

to

the

left

end

plate.

Note:

Have

an

assistant

hold

the

lead

screw

and

shafts

during

the

next

steps.

5.

Loosen

the

two

main

plate

corner

screws

and

lift

the

main

plate.

6.

Use

a

hex

wrench

to

remove

the

two

screws

holding

the

left

end

plate

to

the

main

plate.

7.

Lower

the

main

plate

and

slide

the

end

plate

off

the

shafts

and

lead

screw.

8.

The

left

lead

screw

bearing

assembly

will

come

away

from

the

left

end

plate

with

the

lead

screw.

Remove

the

bearing

assembly

and

replace

it

with

a

new

bearing

assembly.

9.

Reverse

the

procedure

to

reinstall

all

of

the

components.

If

the

lead

screw

is

damaged,

follow

the

steps

below

to

replace

it.

1.

Turn

off

the

2500

and

remove

the

power

cord.

2.

Slide

the

beam

over

the

programming

station.

Note:

This

procedure

requires

two

people

to

perform

the

steps

safely.

3.

Look

through

the

two

holes

in

the

top

of

the

beam

traverse

motor's

mounting

block

while

you

manually

rotate

the

lead

screw

until

the

heads

of

the

flex

coupler

set

screws

are

visible

through

the

holes.

4.

Use

a

7/64-inch

hex

wrench

to

remove

the

set

screw

on

the

left

side

of

the

flex

coupler.

5.

Use

a

1/8-inch

hex

wrench

to

remove

the

four

screws

in

the

bearing

cover

plate

on

the

left

end

plate.

7-24

ProMaster

2500

User

Manual

Repair

and

Replacement

Procedures

6.

Use

a

9/64-inch

hex

wrench

to

loosen

the

four

hex

screws

holding

the

front

and

rear

carriage

shafts

to

the

left

end

plate.

Note:

Have

an

assistant

hold

the

lead

screw

and

shafts

during

the

next

steps.

7.

Loosen

the

two

main

plate

corner

screws

and

lift

the

main

plate.

8.

Use

a

hex

wrench

to

remove

the

two

screws

holding

the

left

end

plate

to

the

main

plate.

9.

Lower

the

main

plate

and

slide

the

end

plate

off

the

shafts

and

lead

screw.

10.

Twist

the

lead

screw

until

it

pulls

away

from

the

beam

traverse

motor.

Walk

the

lead

screw

through

the

beam,

then

slide

it

away

from

the

2500

through

the

left

endplate.

Note:

Make

sure

the

anti-backlash

nut

remains

intact

when

you

remove

the

lead

screw.

1

1.

Reinstall

the

lead

screw

and

all

of

the

removed

components.

12.

Lubricate

the

screw

as

described

on

page

5-63.

Replacing

the

Anti¬

backlash

Nut

If

the

anti-backlash

nut

is

damaged,

follow

the

steps

below

to

replace

it.

1.

Remove

the

lead

screw

(as

described

in

steps

1

through

10

on

page

7-24)

and

carefully

set

it

aside.

2.

Use

a

5/64-inch

hex

wrench

to

remove

the

two

screws

that

hold

the

limit

bar

to

the

beam

shafts

(see

Figure

7-17).

3.

Pull

the

beam

up

and

away

from

the

beam

shafts.

Leave

all

of

the

cables

connected

and

carefully

set

the

beam

aside.

4.

Use

a

9/64-inch

hex

wrench

to

remove

the

four

screws

that

hold

the

front

carriage

shaft

in

place.

Note:

There

are

two

9/64-inch

hex

screws

at

the

front

of

the

left

end

plate

and

two

9/64-inch

hex

screws

at

the

front

of

the

right

end

plate.

5.

Support

the

carriage

while

you

slide

the

front

carriage

shaft

through

the

carriage.

Set

the

front

carriage

shaft

aside.

6.

Use

a

9/64-inch

hex

wrench

to

remove

the

four

screws

that

hold

the

rear

carriage

shaft

in

place

(this

is

similar

to

step

4,

above).

7.

Support

the

carriage

while

you

slide

the

rear

carriage

shaft

through

the

carriage.

Set

the

rear

carriage

shaft

aside.

8.

From

the

left

side

of

carriage,

insert

the

anti-backlash

nut

removal

tool

into

the

anti-backlash

nut

and

twist

it

counterclockwise.

As

you

twist,

the

anti-backlash

nut

will

protrude

from

the

right

side

of

the

carriage.

Guide

it

out

with

your

hand.

Note:

You

may

need

to

use

a

wrench

to

break

the

anti-backlash

nut

free.

ProMaster

2500

User

Manual

7-25

Repair

and

Replacement

Procedures

9.

Apply

a

small

amount

of

purple

Loctite

on

the

outer

surface

of

the

new

nut

where

it

contacts

the

carriage

during

operation.

10.

Twist

the

new

anti-backlash

nut

into

place

and

carefully

re-assemble

all

of

the

disconnected

components.

Replacing

the

Beam

Gasket

If

there

are

air

leaks

in

the

beam,

follow

the

steps

below

to

replace

the

beam

air

channel

gasket.

1.

Turn

off

the

2500,

remove

the

power

cord,

and

disconnect

the

air

supply.

2.

Disconnect

the

vacuum

sensor

cable

from

the

vacuum

sensor

switch.

3.

Disconnect

the

four

solenoid

cables.

4.

Use

a

3/32-inch

hex

wrench

to

remove

the

solenoid

cable

connector.

5.

Disconnect

the

beam

head

rotation

motor

cable.

6.

Disconnect

the

three

optic

cables.

Note:

Write

down

the

cable

positions

before

you

cut

the

tie

wraps

that

hold

the

cables

in

place.

7.

Use

a

1/8-inch

hex

wrench

to

remove

the

two

screws

that

hold

the

cable

harness

to

the

right

side

of

the

beam.

8.

Disconnect

the

gray

air

line

and

the

black

vacuum

line

from

the

two

quick

connects,

noting

their

location.

9.

Use

a

5

/

64-inch

hex

wrench

to

remove

the

two

screws

that

hold

the

limit

bar

to

the

beam

shafts

(see

Figure

7-17).

7-26

ProMaster

2500

User

Manual