How Repair Coats 4050a Tire Changer

COATS 4050A Tire Changer User Manual

4050A

Tire Changer

For servicing single piece automotive and most light truck tire/wheel assemblies

Safety Instructions

Operating Instructions

Installation Instructions

Maintenance Instructions

READ these instructions before placing unit in service KEEP these and other materials delivered with the unit in a binder near the machine for ease of reference by supervisors and operators.

1601 J. P. Hennessy Drive, LaVergne, TN USA 37086-3565 615/641-7533 800/688-6359	Manual Part No.:	8111144 00
HENNESSY INDUSTRIES INC. Manufacturer of AMMCO®, COATS® and BADA® Automotive Service Equipment and Tools.	Revision:	02/97

Table of Contents
Definitions of Hazard Levels ................................	1
Owner's Responsibility ........................................	1
Principal Operating Parts .....................................	2
Operating Instructions .........................................	3
Bead Loosening and Demounting	................3
Mounting .........................................................	5
Inflation ..................................................................	6
Bead Sealing ...................................................	6
Bead Seating ...................................................	6
Inflation ...........................................................	7
Performance Tires/Custom Wheels ....................	8
Custom and Special Wheels ................................	9
Tube Type Tires ...................................................	12
Stages of Inflation ...............................................	10
Bead Seal ......................................................	10
Bead Seat ......................................................	10
Inflation .........................................................	10
Mis-Matched Tires and Wheels .........................	10
Maintenance Instructions ..................................	11
Installation Instructions .....................................	13
Critical Safety Instructions .................	Back Cover

Operator Protective Equipment

Personal protective equipment helps make tire changing safer. However, equipment does not take the place of safe operating practices. Always wear durable work clothing during tire service activity. Shop aprons or shop coats may also be worn, however loose fitting clothing should be avoided. Tight fitting leather gloves are recommended to protect operator's hands when handling worn tires and wheels. Sturdy leather work shoes with steel toes and oil resistant soles should be used by tire service personnel to help prevent injury in typical shop activities. Eye protection is essential during tire service activity. Safety glasses with side shields, goggles, or face shields are acceptable. Back belts provide support during lifting activities and are also helpful in providing operator protection. Consideration should also be given to the use of hearing protection if tire service activity is performed in an enclosed area, or if noise levels are high.

Failure to follow danger,

WARNING warning, and caution instructions may lead to

serious personal injury or death to operator or bystander or damage to property. Do not operate this machine until you read and understand all the dangers, warnings and cautions in this manual. Download a copy of the manual from our website at www.ammcoats.com, or for further information, contact:

Hennessy Industries, Inc. 1601 J.P. Hennessy Drive LaVergne, TN 37086-3565

(615) 641-7533 or (800) 688-6359 www.ammcoats.com

For additonal tire, wheel, and/or inflation information contact the following:

RUBBER MANUFACTURERS ASSOCIATION 1400 K Street N.W.

Washington, DC 20005 (202) 682-4800 www.rma.com

TIRE GUIDES, INC.

The Tire Information Center 1101-6 South Rogers Circle Boca Raton, FL 33487-2795 (561) 997-9229 www.tireguides.com

Definitions of Hazard Levels

Identify the hazard levels used in this manual with the following definitions and signal words:

DANGER

Watch for this symbol:

! DANGER

It Means: Immediate hazards which will result in severe personal injury or death.

WARNING

Watch for this symbol:

! WARNING

It Means: Hazards or unsafe practices which could result in severe personal injury or death.

CAUTION

Watch for this symbol:

! CAUTION

It Means: Hazards or unsafe practices which could result in minor personal injury or product or property damage.

Watch for this symbol! It means BE ALERT! Your safety, or the safety of others, is involved!

Owner's Responsibility

To maintain machine and user safety, the responsibility of the owner is to read and follow these instructions:

• Follow all installation instructions.

• Make sure installation conforms to all applicable Local, State, and Federal

Codes, Rules, and Regulations; such as State and Federal OSHA Regulations and Electrical Codes.

• Carefully check the unit for correct initial function.

• Read and follow the safety instructions.

Keep them readily available for machine operators.

• Make certain all operators are properly trained, know how to safely and correctly operate the unit, and are properly supervised.

• Allow unit operation only with all parts in place and operating safely.

• Carefully inspect the unit on a regular basis and perform all maintenance as required.

• Service and maintain the unit only with authorized or approved replacement parts.

• Keep all instructions permanently with the unit and all decals on the unit clean and visible.

DANGER

Explosion Hazard

Never exceed 40 PSI while seating beads.

DANGER

Explosion Hazard

Never inflate tire above manufacturer's recommended

pressure after bead is seated.

COATS 4050A Tire Changer • 1

Principal Operating Parts

Know Your Unit

Compare this illustration with the unit before placing it into service. Maximum performance and safety will be obtained only when all

Do It Now

Now is a good time to fill out the warranty registration card. This card must be mailed within 30 days of purchase or the warranty may be voided.

				Air-Flate Pedal — 3 position pedal for tire inflation
			13
			13
		Center Post Key — Rotates combination tool for		via air hose/chuck. Do not press without tire/wheel
2

		mounting and demounting operations.	assembly on unit.
		Centering Cone — Centers the wheel to the		Air-Flate Jets — Expands tire sidewalls to bead seat
			14
3
3		contoured table top.		portion of rim for the bead sealing process.

		Positioning Pin — Engages lug hole in wheel to	15	Air Chuck — Clip-on style.
4		Positioning Pin — Engages lug hole in wheel to	15	Air Chuck — Clip-on style.
4		prevent rotation during mounting and demounting.		Manual Release Valve — Allows for manual release
			16	Manual Release Valve — Allows for manual release
5		Contoured Table Top	16	of air pressure from the tire.
5		Contoured Table Top		of air pressure from the tire.
				Air Gauge — Registers tire pressure when air chuck
6		Upper Bead Loosener Shoe
			17
			17	is attached to the valve stem and inflation pedal is
				is attached to the valve stem and inflation pedal is
		Adjustable Upper Bead Loosener — Adjusts to	released.
7		Adjustable Upper Bead Loosener — Adjusts to	released.
		accomodate wide wheels.		Lower Bead Loosener — 2 shoes for lower bead
		accomodate wide wheels.
			18
8		Detent Control Knob — Controls the amount of travel		loosening.
8		Detent Control Knob — Controls the amount of travel		loosening.
		of the lower bead loosener to prevent damage to		Short Center Post Extension (Optional, Part
	large diameter narrow wheels and reverse mount wheels.		19	Short Center Post Extension (Optional, Part
			19	#8108313) — Lengtens center post for wheels
9				#8108313) — Lengtens center post for wheels
9		Rubber Lubricant Dispenser	between 10 an 14 inches wide.
		Serial Number Plate — Record the serial number on		Long Center Post Extension (Optional, Part
			20
10
10		the Owner's Registry Card and on your copy of the		#8108313) — Lengtens center post for wheels over
	warranty card. Provide this number with any warranty or		14 inches wide.
	service claim, and with all parts orders.			1/4" Shim — Installs on lower bead loosener to
			21	1/4" Shim — Installs on lower bead loosener to
	11	Combination Tool — Used in mounting and	21	prevent damaging aluminum and magnesium wheels
	11	Combination Tool — Used in mounting and		prevent damaging aluminum and magnesium wheels
		demounting operations.	with wide flanges.
		demounting operations.	with wide flanges.
		Foot Pedal — Operates the air valve for power bead		Hold Down Tube — Used with styled steel wheels to
	12	Foot Pedal — Operates the air valve for power bead	22	Hold Down Tube — Used with styled steel wheels to
		loosening, mounting, and demounting.		prevent the centering cone from touching the wheel.
		loosening, mounting, and demounting.		prevent the centering cone from touching the wheel.

2 • COATS 4050A Tire Changer

Operating Instructions

The unit must be properly operated and properly maintained to help avoid accidents that could damage the unit and injure the operator or bystanders. This section of the Operating Instructions manual review basic operations and use of controls. These instructions should be reviewed with all employees before they are allowed to work with the machine. Keep these instructions near the machine for easy reference.

Bead Loosening and Demounting

!	CAUTION	This	machine	may
!	CAUTION	from	machines	you
		operate differently

have previously operated. Practice with a regular steel wheel and tire combination to familiarize yourself with the machine's operation and function.

NOTE: Always review nicks and scratches with owners of expensive wheel and tire combinations prior to servicing.

IMPORTANT: Refer to the Performance Wheels and Tires section of this manual before servicing custom and performance wheel and tire combinations.

IMPORTANT: Refer to the Tube Type Tires section of this manual before servicing tires with tubes.

1. Determine the correct side of the wheel for tire removal. Remove the tire from the narrow side (tire mounting side). Tire will not mount or demount from the long side.

NOTE: On some wheels, the sides may be nearly equal. Measure carefully. Only the narrow side is used for mounting and demounting.

Narrow Side

Drop Center

Long Side

Figure 1 - Determining Tire Mounting Side

2. Remove the valve core and allow all of the air to escape from the tire. Remove all weights from rim.

3. Place the tire/wheel assembly over the center post and down onto the contoured table top, with the narrow side of bead seatup (figure 1). The positioning pin must engage a lug hole in the wheel. Position the tire/wheel assembly so that the valve stem is on the operator's side of the machine.

NOTE: Make fine adjustments to the lower bead loosener shoe with the shim kit before placing mag or alloy wheel assemblies on the table top. Refer to the instructions on bead loosener shoe and pages 8 and 12.

4. Thread centering cone clockwise onto the center post. As the tapered end enters the center hole of the wheel, the tire/wheel assembly will adjust itself on the table top. Be sure the cone is hand tight and is centered in the wheel's center hole (Fig. 2).

Figure 2 - Thread the Centering Cone onto the Center Post

5. Check the detent control knob for proper setting. Forward is used for all tire and wheel combinations except 15"x4", 16"x5" to 7", and 17.5"x5.5" to 7.5". To move the detent lever, push the knob down, move it to the proper setting, and release the knob (fig.3).

Figure 3 - Positioning the Detent Control Knob

6. Place the upper bead loosener shoe on the tire next to, but not on, the rim (fig.4). Press down on the foot pedal until both bead looseners complete their full stroke. If the top bead is not completely loosened, release the foot pedal until the unit has completed the full return stroke and press the foot pedal again. The ratchet effect on the loosener will deliver a deeper stroke. The repeat cycle is used only if the upper bead is not loosened.

Figure 4 - Positioning the Upper Bead Loosener Shoe

Note: If may be necessary to loosen the bead at different points around the wheel circumference to entirely free the bead.

COATS 4050A Tire Changer • 3