In addition, the manuals contain parts lists and detailed engineering drawings of systems and select parts. The manuals cover operations, maintenance, service, and troubleshooting. Bucket Truck Versalift Vo 350 Xmhi Overcenter. UEP offers manuals for most makes and models of bucket trucks. Troubleshooting guides can offer as many as ten or so checks to make, ruling out the most obvious things first. Duh! If the PTO is engaged, check the level of the hydraulic oil supply. Your first thought should be to make sure the PTO is engaged. Versalift Customer Support team is available at all times to guide customers into choosing the part needed if they don’t have access to the website. Maybe I can get one more in before you hit the delete button … I get no response when trying to operate the upper control valves. In each unit’s equipment service manual, complete parts and accessories are listed for all models of bucket truck, cable placer or digger derrick. Again, it may be necessary to replace the valve. It’s possible there is a problem with pilot pressure to the holding valve, or maybe the valve is malfunctioning. Running a close second in frequency is that the upper boom raises, but will not lower. There aren’t many options here – the valve probably needs to be replaced. The most probable cause here is a defective counterbalance valve. Troubleshooting guides give a couple of possible causes and remedies. Depending on where the truck is, this can be especially troublesome. Here’s a common one: My lower boom raises, but I can’t get it down. We get a lot of questions about the boom circuits. With that comes our disclaimer: we are not professional mechanics, but we did stay at a Holiday Inn last night! ? Actually, our disclaimer states that we are not professional mechanics, but if we have the unit’s manual handy, we can look it up and hopefully we can be of some help. We want to take this opportunity to review some of the more common questions we get. For that type of call we open the unit’s manual and turn to the utility vehicle manual as our main troubleshooting guide. From time to time a customer will ask us for help with a mechanical/hydraulic issue … mostly for bucket trucks, but also for digger derricks.