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OSHA Safety Hazard Information Bulletin on
Employees' Exposure to Possible Pinch Point Hazard on Certain Models of Bobcat Skid-Steer Loaders Equipped with
Either Loader or Backhoe Attachments Manufactured by the Melroe Company.
August 6, 1993
The Atlanta Regional Office has brought to our attention a serious safety hazard involving certain models of Bobcat skid-steer loaders. A fatality occurred when a worker was caught between the bucket and the front portion of the operator's cage on a Bobcat Model 7753 skid-steer loader while driving the loader onto a trailer.
The Area Office investigation concluded that the worker stood in front of the Bobcat's cage area, when the fatal accident occurred. As the worker got up from the seat, his left foot contacted the bottom edge of the pedal interlock causing the pedal interlock to unlock itself. This action also activated the foot control causing the bucket to rise. The worker's neck was then caught between the bucket and the operator's protective cage.
Access to the Bobcat cab is through the front between the lift arms. Located inside the cab are the hand and foot controls which operate the loader and the lift arms. Bobcat loaders are equipped with a safety system consisting of a seat bar connected to interlocks on the pedals. In order for the loader to function, the operator is required to be in the seat with the seat bar lowered across the lap. In this position the pedal interlocks are released, allowing the pedals to operate freely.
Tests at the site revealed that, under certain conditions, the seat bar interlock system could be defeated by simultaneously raising the seat bar (as when standing) and depressing the left pedal. Under these conditions the bucket can be elevated to its full height in one and one-half seconds, at full throttle. This accidental activation can trap the operator between the bucket and the cab, resulting in serious injury or death. Similar accidents are also possible when a backhoe attachment is employed.
The loader manufacturer, Melroe Company, a unit of Clark Equipment Company is aware of the safety hazard and has taken action by issuing safety notices identifying the models affected and notifying both owners and dealers of corrective action necessary to prevent the condition from occurring. Dealers will perform the corrective modification at no cost to the owners. (Copy of notices attached.)
Compliance and consultation personnel should be aware of the potentially serious hazard of certain models of Bobcat loaders (listed on the manufacturer's safety notice.) If these models are encountered during inspections or visits, advise the employer and operator of the hazard and the necessary corrective actions.
Please distribute this bulletin to all Area Offices, State Plan States, Consultation Projects, and appropriate local labor and trade organizations.
IMPORTANT SAFETY NOTICE PLEASE READ IMMEDIATELY
Dear Bobcat Loader Owner:
Our records indicate that you purchased a Melroe Bobcat skid-steer loader model ________________, serial number ___________________. That skid-steer loader is the subject of this Safety Notice.
THIS IS A SAFETY NOTICE TO WARN YOU OF TWO SERIOUS SAFETY CONCERNS WITH THE SEAT BAR "PEDAL INTERLOCKS" ON YOUR SKID-STEER LOADER.(*) THIS NOTICE APPLIES TO YOUR SKID-STEER LOADER LISTED ABOVE AND TO ALL MODEL 853, 753, 7753 LOADERS, TO ALL MODEL 742B LOADERS WITH A "50 SERIES" TRANSMISSION (SERIAL NUMBERS 18001-18134) AND TO ALL MODEL 743B LOADERS WITH A "50 SERIES" TRANSMISSION (SERIAL NUMBERS 18001-18869).
Dear Bobcat Dealer:
The attached Safety Notice is being sent to all owners of the affected machines. This Safety Notice affects all Model 853, 753, 7753 loaders, all Model 742B loaders with a "50 Series" transmission (serial numbers 18001-18134) and all Model 743B loaders with a "50 Series" transmission (serial numbers 18001-18869). The Safety Notice is alerting our customers to two safety concerns with the "pedal (or "control") interlocks."
Melroe Company engineers are currently developing an appropriate corrective modification to address these two safety concerns. Until that is accomplished, Melroe Company requests that you immediately:
1. Read the Safety Notice;
DATE: 28 October 1992Recently Melroe Company sent a Safety Notice to all affected owners and Melroe dealers warning about two serious safety concerns with the Seat Bar "pedal interlocks". In that Safety Notice, Melroe Company informed owners and dealers that it would provide a corrective modification at no cost. The Melroe Company has developed two field modification kits: the Interlock Shield Kit and the Transmission Cover Bolts Kit. You must install one or both of these kits on the affected machines.
Melroe Company now asks its dealers to take the following immediate actions:
1. Read this Service Letter for instructions about the appropriate field modification kit(s) to be installed on affected loaders;December 4, 1992
You recently received a Safety Notice from The Melroe Company informing you or two very serious safety concerns with the seat bar "pedal interlocks" on your Bobcat skid-steer loader, Model _______, serial number _______. A second copy of that Safety Notice is enclosed with this letter. As you may remember, the Safety Notice asked you to allow your local Bobcat dealer to make small modifications to your loader to remedy those two serious safety concerns.
We have learned, however, that you will not allow your local Melroe dealer to make those corrective modifications. The Melroe Company urges you to carefully read the Safety Notice, which we sent to you in an effort to protect you or another operator from serious injury or death. It is of the utmost importance that you reconsider your refusal to have your machine corrected.
Your machine needs one or both or the following corrective modifications:
1) a new shield over the left and right pedal interlock to prevent accidental foot contact with those interlocks;The Interlock Shield Kit (P/N 6705490) includes (two) new Interlock Shields (one for each interlock), mounting hardware and a new warning decal. Follow Installation Instructions (P/N 6722392) enclosed. This kit will prevent accidental foot contact with the pedal interlock. Install this Interlock Shield Kit (PIN 6705490) on the following machines:
753 (S/N 19609 BELOW) EXCEPT: 18614, 19135, 19374, 19475, 19523, 19526, 19528, 19530, 19532, 19538, 19540, 19557, 19558, 19561, 19566, 19571, 19572, 19575-19579, 19581-19587, 19589-19602, 19604-19606The Transmission Cover Bolts Kit (P/N 6705253) includes (three) new style shoulder bolts and a new warning decal. Follow Installation Instructions (P/N 6722343) enclosed. This kit will prevent the transmission cover from shifting. Install this Transmission Cover Bolts Kit (P/N 6705253) in the following machines:
742B (S/N 18001 - 18133)Melroe Company will compensate you for one (1) hour labor to install the new kit(s) On 753, 7753, 742B & 743B machines. One and one-half (1-1/2) hours labor is-allowed for 853 machines. One (1) additional hour is allowed for travel for retailed machines.
This field modification requires your immediate attention. It is of the utmost importance that you complete this corrective modification immediately to avoid serious injury or death.
FOOTNOTE (1) The Directorate of Technical Support issues Hazard Information Bulletins (HIB) in accordance with OSHA Instruction CPL 2.65 to provide relevant information regarding unrecognized or misunderstood health hazards, inadequacies of materials, devices techniques, and safety engineering controls. HIBs are initiated based on information provided by the field staff, studies, and concerns expressed by safety and health professionals, employers, and the public. Information is compiled based on a thorough evaluation of available facts, in coordination with the appropriate parties. (Back to Text)
FOOTNOTE (*) If your Bobcat loader has hand controls instead of pedals, this Safety Notice applies to your "control interlocks". (Back to Text)