brady seal install

[davidbrady]

Hey Bruce,

I'm not sure how I stumbled upon this nugget, but the idea is meant to re-sync the synchronization cylinder before starting any movement of the slide. It's a safeguard that's probably more important if you have the slide extended for a prolonged period, months. In this case if there's leakage anywhere in the hydraulics then the slide body hydraulic rams may not articulate uniformly. HWH knows that overtime and with limited use the synchronization cylinder can become out-of-sync so they built in a method to ensure that it can resync itself. To re-sync, the synchronization cylinder has to hit its end-of-travel where bleed valves open allowing fluid to flow freely through the cylinder, thus re-syncing.

So, say you've had the slide extended for a few months. Instead of simply retracting the slide and risking an out of sync synchronization cylinder and a racked slide body, you push and hold extend which starts the hydraulic pump which forces fluid thru the synchronization cylinder (because the relief valves are open connecting all internal reservoirs forcing any air out of them), and you hold extend until the over current sensors shut off the hydraulic pump. (The slide doesn't move, it's already extended and we're just extending it a second time). Now you're sure that the synchronization cylinder will do its job and keep both rams tracking together. So, you now push retract and you bring the slide in. You can do the same thing when extending the slide; i.e., first push retract and allow the pump to push fluid thru the synchronization cylinder.