hey guys i have been bleeding my dump truck cylinder while the bed is down .. i just open up the bleeder and let any air of fluid run out and close it...there most be a way to do it so that you dont have any air trapped in the system...cause after a mth or so i have air in the system again and again...how am i suppose to bleed it???? do you bleed it wiht the bed up on the pins..i have a site tub and its about 2" down from full and has been that way for years now...thanks mike
how to bleed the hydr. clyinder on a dump
Discussion in 'Trucks [ Eighteen Wheelers ]' started by earthmover, Jul 18, 2011.
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Automatic bleeders, thats what all the dumps I pulled had.
123456 Thanks this. -
The cylinder may need the packing rings tightened, but take the truck to a hydraulic shop to do this properly. If you try to do it yourself you can have problems in how the cylinder stages raises and lowers...........this can be very dangerous with the dump body dropping a complete stage of the cylinder while trying to raise it under a heavy load or the dump body not coming down properly after dumping a load -
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air in dump cylinder makes PTO pump work with zzzzz sound, but it is normal.
Dupm truck system is self bleeding system, like PS system, and do not use autobleeders, truck looks greazy! the only good thing with automatic bleeders - oil on frame inhibits rust))) -
But it did work. -
i think i found the problem when i let the bed down i can hear air under the truck so i got under the truck and think the line from the lever to the pum may have a small hole it it ill know for sure tomm.. getting dark now thanks oh my truck has a manual bleeder that i have to pull the cover and turn a small bolt with t hole in it...also it was repacked about 4yrs ago...now when it comes down sometime the last stage will go back up and hit kinda hard from time to time thats how i know it has air.. i bleed it and its good for a while but it is scary and dangerous.. thanks mike
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Good thing I already had it out of my pants! -
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