I was incorrect. They redesigned the mainline truck in the late 90s not the late 80s. You have one of the last C500s. It's hard to tell on the hours, some trucks are used up in 1500 hours, others are still good at 15,000. TVH parts has a good selection of parts for this series of truck. If you are a dealer you can get a log in. They have some service info also. If you want a service and or parts manual you will need to contact your local Clark dealer.