Miller Travel Master SB-10D Kullanıcı El Kitabı - Sayfa 26

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If it should become necessary to replace part or all of the

hub assembly, reinstall the new hub assembly as fol-

lows:

Remove wire spool from hub.

Remove hub assembly and hub support shaft

from spool mounting arm.

Reinstall new hub assembly onto hub support

shaft in order given:

a. Spring

b. Keyed Washer

c. Fiber Washer

d. Brake Washer

e. Hub

Brake Washer

g. Fiber Washer

Reinstall hub support shaft through desired

mounting hole in mounting arm.

Reinstall and secure hex nut onto end of support

shaft.

Reinstall wire spool.

Fiber Washer

Brake Washer

Hub

Lock Nut

Brake Washer

Fiber Washer

Keyed Washer

Figure 8-1. Reinstallation Of Hub Assembly

8-4.

BRUSH INSPECTION AND REPLACEMENT

(Figures 8-2 And 8-3)

WARNING: ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Shut down Carriage control and welding

power source, and disconnect input power

employing lockout/tagging procedures be-

fore inspecting or servicing.

Lockout/tagging procedures consist of remov-

ing input plug from receptacle, padlocking line

disconnect switch in open position, removing

fuses from fuse box, or shutting off and red-tag-

ging circuit breaker or other disconnecting de-

vice.

OM-889 Page 22

Hub Support

Shaft

Spring

Retaining Ring

Ref. SD-122 293

CAUTION:

DISASSEMBLY OF MOTOR

FIELD MAGNETS can result in personal in-

jury and equipment damage.

Limit drive motor repairs to brush replace-

ment.

The field magnets are very strong. If disassem-

bly is attempted, injury to fingers and hands may

result from the rotor being drawn back into the

motor. The field magnets are matched sets and

operation may be affected if the magnets are

tampered with. Warranty is void if the motor is

tampered with.

Open brush cap by sliding screwdriver under

catch and lifting. Remove brush cap.

Grasp spring retaining bracket with long-nose

pliers.

Push spring retaining bracket in slightly, and

move towards brush. This should release the

spring assembly, and it can be removed.

Pull brush out using brush pigtail.

Spring

Spring Retaining Bracket

Figure 8-2. View of Spring Assembly And Brush

When Brush Cap Is Opened

If the brushes are less than 1/4 in. (6.4 mm) long,

replace them. Disconnect brush pigtail from

brush box tab, and remove brush.

Connect new brush pigtail to brush box tab.

Route pigtail through slot in brush box. Be sure

that the pigtail will not come into contact with a

metal surface.

Insert brush into brush box. Be sure that the low

end of the bevel on the top of the brush is towards

the spring.

Using long-nose pliers, insert spring assembly

beside brush, sliding the spring retaining bracket

along the brush box wall. The spring retaining

bracket hooks on the brush box wall as illustrated

in Figure 8-3.

10.

If the spring retaining bracket is in place, it will be

against the brush box wall when pliers are re-

leased.

11.

Be sure that the spring is in the proper position as

shown in Figures 8-2 and 8-3.

12.

Replace and latch the brush cap.

13.

Reconnect power to all equipment, and resume

operation.

Brush

Box

É É É É

Brush

É É É É

É É

Brush Pigtail

S-008