Miller GYRO BAIL GB-15/25 Owner's manual

Brand: Miller

Model: GYRO BAIL GB-15/25

Type: Owner's manual

This manual is also suitable for

July 1991 FORM:

Use above FORM number when ordering extra manuals.

OWNER’S MANUAL

OM-714

GB-15/25 Gyro Bail

SECTION 1 − SAFETY PRECAUTIONS AND SIGNAL WORDS

1-1 GENERAL INFORMATION AND SAFETY

A. General

Information presented in this manual pertains to equip-

ment design, installation, and operation which should be

read, understood, and followed for the safe and effec-

tive use of this equipment.

B. Safety

The installation, operation, maintenance, and trouble-

shooting of resistance spot welding equipment requires

practices and procedures which ensure personal safety

and the safety of others. Therefore, this equipment is to

be installed, operated, and maintained only by qualified

persons in accordance with this manual and all applica-

ble codes such as, but not limited to, those listed at the

end of Section 1 − Safety Rules For Operation Of Resis-

tance Spot Welding Equipment in the spot welder

Owner’s Manual.

1-2 SAFETY ALERT SYMBOL AND SIGNAL

WORDS

The following safety alert symbol and signal words are

used throughout this manual to call attention to and

identify different levels of hazard and special instruc-

tions.

This safety alert symbol is used with the signal

words WARNING and CAUTION to call atten-

tion to the safety statements.

WARNING statements identify procedures or

practices which must be followed to avoid seri-

ous personal injury or loss of life.

CAUTION statements identify procedures or

practices which must be followed to avoid minor

personal injury or damage to this equipment.

IMPORTANT statements identify special instructions

necessary for the most efficient operation of this equip-

ment.

1-3. DESCRIPTION

The Gyro Bail is designed for use with portable resis-

tance spot welders. Usually used with a boom and

counterweight or with a spring-loaded cable, the Gyro

Bail hangs the weight of the welder and enables the op-

erator to rotate the welder 360°.

The alpha-numeric model designation refers to the fol-

lowing:

GB − Gyro Bail

15/25 − Rating of resistance spot welder that Gyro Bail

is designed to be used with is 1.5 and/or 2.5 kVA.

SECTION 2 − INSTALLATION

WARNING: ELECTRIC SHOCK can kill.

• Do not touch live electrical parts.

• Shut down unit, and disconnect input

power employing lockout/tagging proce-

dures before beginning this installation.

Lockout/tagging procedures consist of

padlocking line disconnect switch in open po-

sition, removing fuses from fuse box, or shut-

ting off and red-tagging circuit breaker or

other disconnecting device.

IMPORTANT: All directions, such as left or right, are

with respect to the operator facing the front of the resis-

tance spot welder. Retain all hardware removed during

this procedure for reinstallation unless specifically told

otherwise.

CAUTION MOVING PARTS can cause injury.

• Keep away from pinch points.

1. Install and secure left mounting bracket (bracket

containing four holes) to left side of unit as shown

in Figure 3-1.

2. Install and secure right mounting bracket.

3. Install upper and lower bearings onto left mount-

ing bracket, securing each with the supplied

internal lock washer and nut.

4. Install gyro bail ring onto the bearings on the left

mounting bracket (bearings ride on inside of

ring).

5. Holding the ring in place, install the bearing onto

the right mounting bracket, aligning the bolt hole

in the bearing with the hole in the bracket. Slip the

supplied bolt through the bearing and bracket,

and secure.

OM-714 Page 2

6. Install side brackets onto suspension yoke as fol-

lows:

a. Align slot in side bracket with mounting hole in

end of suspension yoke. Position side bracket

so that when bracket is installed onto gyro bail

ring, length of bracket runs parallel to resis-

tance spot welding, and short leg of bracket

”points” toward spot welder (see Figure 3-1)

IMPORTANT: Placement of suspension yoke in slot of

side brackets determines the hanging position of resis-

tance spot welder in relation to the horizontal.

b. Secure side brackets to suspension yoke, mak-

ing sure that hardware is installed as shown in

Figure 3-1 to ensure proper motion of gyro bail.

7. Install and secure side bracket/suspension yoke

assembly onto gyro bail ring as shown in Figure

3-1.

8. Install and secure eye bolt onto top of suspension

yoke using supplied hardware.

9. Hang resistance spot welder assembly from ade-

quate suspension device, and, if necessary,

adjust its pivot point or tilt angle as follows:

a. Tighten self-locking nuts.

b. Loosen the self-locking nut at each end of sus-

pension yoke.

c. Slide spot welder along the side brackets until

welder is in the desired position.

OM-714 Page 3

SECTION 3 − PARTS LIST

ST-147 722

Figure 3-1. Complete Assembly

Description Quantity

Part

No.

Figure 3-1. Complete Assembly For GB-15/25

Item

No.

041 979

1 147 529 BRACKET, mtg RH bail 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 601 871 NUT, stl hex jam .375-16 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 602 221 WASHER, lock stl intl tooth .375 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 024 665 BEARING, ball pul sgl row .437 x 1.250U groove 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 601 965 SCREW, cap stl hexhd .375-16 x 1.000 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 147 527 YOKE, suspension 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 110 510 BOLT, eye shld thd stem .375-16 x 1.250 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 602 213 WASHER, lock stl split .375 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 605 181 NUT, stl slflkg hex hvy .375-16 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 602 243 WASHER, flat stl std .375 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 147 528 BRACKET, mtg ring gyro bail 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 079 240 SCREW, cap stl hexhd .375-16 x 1.750 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13 110 509 RING, gyro bail 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14 601 926 SCREW, cap stl hexhd .250-20 x .625 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15 602 207 WASHER, lock stl split .250 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16 147 530 BRACKET, mtg LH bail 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .