The Maintenance assembly is a complete unit that comes with everything ready to bolt in. If you received a Maintenance Assembly with no drive gear, then you got ripped.
I have attached a picture of a complete unit. I dont see that CMYKPARTS sells a complete Maintenance Assembly they sell all of the parts individually.
If you need Mutoh parts check out our site. We ship directly from Mutoh, so your getting the correct most current part. All of our pumps are current style pumps that can handle the solvent inks.
Just beware of the pumps you get from places other than Mutoh dealers. The new style pumps have a solvent based tubing inside with metal unions connecting to a softer exterior tubing. The old pumps used the softer tubing and the result was pinched tubing in the gears causing no ink flow.
I have installed pumps for custoomers recently that have just purchased the old style pumps. I dont know where they are getting them from, but I can assure you that we sell the new updated pumps that will last longer.
The first picture attached is a 48"/62" complete maintenance assembly which is mounted on a bracket ready for install with new capping assembly, pump & pump motor, all you have to do it take your old one out and replace the new one. Much easier than trying to change just the pump or the caps.
www.wideformatcolorparts.com