Hough HA Payloader Service Manual

I'm looking for a service manual for a Hough HA Payloader, SN #HA-331-204-U33507. I have a customer looking to pull the Waukesha engine out of the machine and he's looking for any information regarding the chassis on the machine.

We've contacted Komatsu as well as several other outlets and cannot locate any information on a service manual.

Any information would certainly be helpful.

Thanks in advance.