(Could be why I can't trim it to get up on plane). From the Bennett troubleshooting PDF available online- Dean Periodically, check fluid level in HPU. I took the plastic cover off but am not sure where to add it. Step 12 — Remove plug from filler stack located at the front left corner of the reservoir. Your Bennett Trim Tab system should not need refilling for several seasons. Mine is mounted on the stern, in the starboard hatch, near the drain lines for the deck. There does not seem to be a fill cap. ... Also, double check to make sure you have your tabs fully retracted to check and fill the fluid. With trim tabs completely retracted, fluid level should be about 2" from bottom of reservoir (approximately 22 ounces). Check to see if there is a relay in line on the wiring harness near the hydraulic power unit. Insta-Trim Boat Leveler Tabs operate in reverse of what you might think. Your Bennett Trim Tab system should not need refilling for several seasons. Note: Add fluid only with the trim tabs fully retracted (up). Bennett Marine . ... Look at the corner of the reservoir under the solenoid valve with the RED wire. NOTE: if a person wanted to the check the reservoir level for say their Bennett hydraulic trim tab pump/reservoir, they would want to trim the tabs all the way up first. Bennett 20ft Hydraulic Tubing This Bennett 20ft hydraulic tubing replace a damaged hose in an existing system. 550 Jim Moran Blvd. 6. The trim tab reservoir on my 1993 4588 is empty. If you know where the fill hole is, just use an oil can with a small hose on it, or whatever it takes to reach the fill hole. For that matter, it's normal to be almost impossible to get to. Anyone know offhand where you add fluid to the Bennett trim tabs? There is a little cap on the left front that pulls out. With the Bennett trim tab system the fluid level should be about 2 inches from the bottom of the reservoir with the tabs fully retracted in the “up” position. I pulled the smoked plastic top off (it's held on by 1 screw. Not everything on boats is easy to get to. The goal is to get the hydraulic cylinders to retract all the way before checking the oil level to ensure an accurate reading. When the trim tab rocker switch is released, the valve close, capturing the fluid in the actuators hydraulic cylinders. If your reservoir does not have a full line, add fluid so the fluid level is about 1 inch below the top of the reservoir with the trim tabs fully retracted (up). The following video shows the steps to add hydraulic fluid or trim and tilt fluid to your trim and tilt. Tom McGow Bennett … Bennett Marine continues to lead the way as the largest manufacturer of durable hydraulic and electric trim tab systems for a variety of boat styles and sizes. It prevents the system fuse from blowing if you try to actuate one trim tab … Fill with any type of automatic transmission fluid (AFT) like a Dexron. To refill, remove lexan cover and filler plug located at the front left hand corner of the reservoir. Thus trim tabs hold their position. If there is it is an Interrupter Relay (IR1000). To refill, remove the HPU’s Lexan cover and filler plug located at the front left hand corner of the reservoir. The port trim tab lifts the port stern which lowers the starboard bow. Bennett Trim Tab Systems carry a five year warranty. Re: Trim Tab Fluid Replacement Access Trim tabs are not engine related, so moving to boat topics. Note: Add fluid only with the trim tabs fully retracted (up). If your reservoir does not have a full line, add fluid so the fluid level is about 1 inch below the top of the reservoir with the trim tabs fully retracted (up). If the operator prefers different action from the control and tabs, it can be changed as desired.