I just purchased a Class C 2003 Gulf Stream Ultra 24.5 with 9,500 miles. I've been going through all of the systems making repairs and doing some long overdue preventive maintenance before I head out on the road. The RV has sat for a long long time, as you can most likely gather from the year to milage ratio.....I want to change the hydraulic fluid in the slide out pump, but I cant find any manual or instructions on how to change the fluid, only how to add fluid. The pump is a Dewald single slide out pump. I found the parts and service manual online, but no instructions on how to change the fluid. Thanks for your time and any recommendation. Here is the link to the service manual, but again, it doesn't have any instructions on changing the fluid, it only says that you need to change it every 24 months.
Parts and service manual for Gulf Stream hydraulic slide o