Coats 5009937 Robo-Arm Retro Fit for 70X Series Tire Changer
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Coats 70X Tire Changer Robo-Arm Assist Arm
You've got an older 70X series rim clamp tire changer that still earns its keep, but the tough sidewalls are wearing you down. The Coats 5009937 Robo-Arm is the tire changer assist arm that bolts onto your existing machine and takes the fight out of stubborn mounts and demounts. It gives you 28 inches of reach and a redesigned ergonomic handle, so you hold the bead where you need it instead of muscling the tire by hand.
This is the upgrade that turns a manual changer into a press-assisted one. The arm holds the upper bead down through the rotation while you work the lower bead, which means fewer fights with low-profile and run-flat tires and a lot less strain across a full day on the floor. As a Coats tire changer accessory, it's a clean retrofit for the machine you already trust, not a reason to buy a whole new changer.
One important fit note before you order: this Coats 70x-3 rim clamp tire changer w robo-arm kit works with 70X series rim clamp changers, but it is not compatible with the 5030 or 5040 models. If your machine falls in that range, call us first so we get you the right setup. We stock Coats tire changer parts and accessories and back every order with direct phone support, so you're not guessing on fitment alone.
Coats X Series Tire Changer Specifications
| Model | Coats 5009937 Robo-Arm Kit |
| Type | Tire changer assist arm (retrofit kit) |
| Compatibility | 70X series rim clamp tire changers (not compatible with 5030 and 5040 models) |
| Reach | 28 inches |
| Handle Design | Ergonomic, redesigned for improved control |
| Function | Assists in mounting and demounting tough tires |
| Cylinder | 2.5 inch diameter cylinder assembly |
| Manufacturer | Coats |
What's Included
- Front and rear arm weldments
- 2.5 inch diameter cylinder assembly
- Robo-Arm 3-position valve assembly
- Swing arm pivot pin and pivot pin spacer
- Plastic hold down foot with rubber hand grip
- 10-1/2 inch and 14 inch hex cap mounting bolts
- Manifold, gauge and safety valve with barbed fitting
- 1/4 inch rubber hose and 1/8 inch plastic tubing
- Duckhead mount/demount tool bracket and hardware
- Bead roller assist storage tube
- Grease fitting, steel ball, roll pin and helper tool
- Installation and operating instructions with parts ID
Coats Tire Changer Parts Installation & Setup
This is a retrofit, so plan for shop time on the bench before it earns its keep. Start by clearing the area and disconnecting both air and electrical power, then bleed off any stored air through the inflate valve and confirm zero pressure on the tower gauge before you touch a fitting.
The kit swaps in a 10-1/2 inch long pivot bolt to support the new swing arm assembly, and two of the main joints torque to 240 ft-lbs. They're meant to be very tight while still rotating freely. You'll route the air hose and 1/8 inch nylon control tubing from the robo cylinder to the valve, install the Duckhead bracket on the vertical slide, then reconnect air and cycle the cylinder up and down several times to check operation and confirm no leaks. The included instructions walk every step with parts identification.
Clean, dry shop air matters here. The cylinder and valve components depend on it, and contaminated air is the fastest way to shorten the life of any add on tire changer robo arm.
Applications
Already own a 70X series changer? Add press assist without the cost of replacing the whole machine.
Cut operator fatigue across back-to-back changes so your tech stays productive through the afternoon.
Stiff sidewalls and tight beads are where the assist arm pays for itself, holding the bead so you don't have to.
The 28 inch reach gives you control over bigger wheel and tire packages that are awkward to handle by hand.
Product Video
Shipping
Free shipping to the lower 48.
Our team coordinates the shipment and helps manage scheduling details. Need a delivery window, residential delivery, or liftgate service? Contact us before ordering so we can confirm the best delivery setup and any accessorial charges.
Warranty
Covered under the Coats Tire Changers Limited Warranty. Tire changer and inflation accessories carry a 1 year parts warranty with no labor warranty. Coverage applies to defects in materials and workmanship and begins on the date of delivery to the first retail buyer or date of first use, whichever is earlier.
The warranty does not cover misuse, abuse, neglect, alterations, lack of maintenance, or failures caused by air system contamination such as water, rust, or debris. Wear items are excluded. Coverage applies to equipment sold and used in the United States and Canada.
Warranty registration may be required after purchase. Refer to included documentation for details.
Questions Before You Buy?
Not sure if this Robo-Arm fits your machine, or want help confirming your 70X model? Call us at (855) 498-2147 and we'll get you sorted.
Frequently Asked Questions
Will this Robo-Arm fit my tire changer?
It's built for Coats 70X series rim clamp tire changers. The one exception you need to know about is that it is not compatible with the 5030 or 5040 models. If you're unsure which 70X machine you have, call us before ordering and we'll confirm fitment.
How much reach does the arm give me?
The Robo-Arm provides 28 inches of reach, which gives you better control over larger diameter wheel and tire packages and keeps the bead where you want it during mounting and demounting.
Do I need to buy a new tire changer to use this?
No. This is a retrofit kit that installs onto your existing 70X series rim clamp changer. It's a way to add press assist to a machine you already own instead of replacing it.
What does the Robo-Arm actually do during a tire change?
It acts as an assist arm that holds the bead down through the rotation while you work the tire. That reduces the physical strain of mounting and demounting tough tires like low-profile and run-flat sizes.
Is installation something I can do in my own shop?
Yes, but plan for bench time. You'll disconnect air and power, swap in the included 10-1/2 inch pivot bolt, torque two main joints to 240 ft-lbs, route the air and control tubing, and install the Duckhead bracket. The kit ships with full installation and operating instructions.
Does it run on shop air?
Yes. The 2.5 inch diameter cylinder is air operated and controlled through a 3-position valve. Use clean, dry air. Contamination like water or rust isn't covered under warranty and shortens component life.
What's included in the kit?
You get the front and rear arm weldments, the cylinder and valve assembly, all mounting hardware and pivot pins, the air hose and nylon control tubing, the Duckhead tool bracket, the bead roller assist storage tube, and the instruction manual with parts identification.
How is it covered under warranty?
As a tire changer accessory, it carries a 1 year parts warranty with no labor warranty under the Coats Tire Changers Limited Warranty. Coverage starts at delivery or first use, whichever comes first, and applies to defects in materials and workmanship.
What does shipping cost?
Shipping is free to the lower 48 states. Our team handles the shipment and can help coordinate scheduling. Reach out before ordering if you need a specific delivery setup.
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