i'm still having problems raising the top....mainly it is raising very slowly...takes 45 seconds ...it was going up alot faster until i fixed a leak in the hydraulic system and added fluid....i put type f trans fluid in it...the pump sounds as if it needs bled....maybe it just doesnt like ford fluid..lol...anyway i'd like to change the fluid but not sure of the best way to do it ...maybe just pull the pump and turn it upside down?...it seems like everyone here is using dexron 3 fluid....would hydraulic fluid be better or stick with dexron 3?

Doesn't the system call for Dexron?

If that's correct (calls for Dexron) and you put Type F in there, you're heading for a Bad Time.

The materials used in hydraulic system seals are compatible with specific fluids - using the wrong fluid can destroy the seals (I grew up in an auto shop - seen a few transmissions wrecked this way).

I'd drain the system, refill w/dexron, drain and refill again to ensure you get all the Type F out.

Hopefully there's no damage, and you're just seeing a difference in fluids handling pressures.

if i do end up needing a pump...does anyone know the specs on these pumps?...there are alot of new pumps on ebay but i need the specs on mine to match it up

just get model numbers off old 1 and manufacturer if not same cross reference or get same gpm and /psi. with same inputs and out puts ! hope this helps that is if pump is bad most likely impeller seal could be leaking maybe? id fush it out first use siphon hose if hard to get to i not sure bout new hi-los tho i have hand crank no hydraulics to mess up and fix!

mine is an 85....no hand crank...i looked for a model number and didnt see one

no wont have a hand crank at all! imeant model num on hydraulic pump

mines 1964 b4 they had hydraulics just sayin easy way to remove top from hyd unit! i think lucas makes good flush for trannys would work good on pump.

hi-lift for 9n tractor or come along on tree branch or ratchet staps on tree or 12vdc winch on tree outta do it! easily! 4 point hook up to roof! cut cables bleed hydraulics come right off maybe bad idea compared to othrs? idk? just my 2 cents since i'm dumb!

You should be able to match it up with a suitable replacement from Northern Tool. Or....

Web Store

Home - JR REPAIR

Or contact this guy. Has one for $300.00
http://www.hilotrailerforum.com/f12/...975/#post41223

__________________
"Ruben"
2404T, 2003 2500HD 4X4 GMC Sierra SLT Crew Cab w/Astro camper shell and 2003 Chevy Tahoe LE 4X2
Far West Texas

This should be a match up NorTrac 12 Volt DC Hydraulic Power Unit — Single Acting, Model# YBZ5-F2.1B1W2/WUAAT1 | Hydraulic Power Units| Northern Tool + Equipment

thanks...thats what i needed...i wasnt sure if it was single or double acting...i'm going to pull mine apart and see if i can fix it... if not i'll buy the one from northern

i removed the hydraulic pump and popped the reservoir tank off...immediately i could see why it wasn't able to raise the top....the pickup screen was plugged up tight with sludge...the tank also had about a half pound of sludge..i cleaned everything up ..put it back together and re installed the pump...works like new..only takes 6 seconds to raise the top now

Glad you were able to solve your problem. A little TLC goes a long way.

cool way to go glad for you!