Have you tried Ingersoll directly???

http://www.irtools.com/serviceandsupport/
http://www.irtools.com/partsandaccessories/

"You know how important your equipment is to your livelihood. At Ingersoll Rand, we know it too. That’s why for the past 100 years we’ve been setting the standard for not just powerful and durable products, but also for providing total solutions that help you get the job done right.



As tough as our equipment is, we also know that it needs to be maintained. If and when the time comes, let Ingersoll Rand meet your service and repair needs through our expansive Certified Service Network.



Each Certified Service provider has the specialized testing equipment, genuine parts, and skilled training to ensure you’re back up and running at Original Equipment Manufacturer (OEM) specifications.Work with us and you'll enjoy these other benefits too."