Question about Cars & Trucks

1 Answer

Hydraulic system mulfunction

Bucket is slow, one final drive ceased after changing seal and bearing, boom up but will not come down

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Cars & Trucks Master
  • 40,646 Answers

You may have to get specialist hydraulics for this. ON most boom and cylinder systems there is a flow control valve on the bottom side of the cylinder to stop uncontrolled fall in the event of hose failure. If the flow rate is too high the valve closes off and locks the ram in the position that the hose failed in. To unlock it you have to extend the ram in question and lower it slowly. Bent rams will also cause the fault as there is normally no downward hydraulic action as the ram moving back in relies on weight so any bent /jamming bush will not result in a ram return or slow ram return

Posted on Nov 19, 2013

3 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

SOURCE: Leak from Drive shaft output seal

Does it leak from off the driveshaft?
If yes , thn check the diameter of the driveshaft where the seal lip touches.

Posted on May 22, 2009

wesleygolden
  • 59 Answers

SOURCE: ABS MULFUNCTION

I agree with RazFL but there is an adjustment procedure when replacement of this switch. It could still produce the same results with-out doing it. Gap between the switch is 1.5mm closed or between the switch and the switch reasting/support bracket with pedal not depressed. FYI

Posted on Jul 13, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Cat 336 d implement boom swing bucket moving fast


Been sometime since I worked on hydraulics. But isn't the swing(or any action) controlled by how far you move the handle? Hydraulic handle? If that's your case the the block at the handle has a stuck valve. If yours is electronic Then it is a bad servo switch or stuck valve/ solenoid at the block for the swing.

Jan 08, 2017 | Cars & Trucks

2 Answers

Change bucket seals and bucket still seep down


Seals are gone in pump and allowing flow back into holding tank if it is not seeping onto the ground

Mar 03, 2016 | Cars & Trucks

1 Answer

Replace cylinder in bottom boom on hiranger bucket truck


ive heard of folks doing it without a crane but i would not try it , alignment is too critical with getting guides and stops back in and with nothing to move boom that would be too difficult

anyways: suspend boom end with double straps from crane , disconnect hydraulic/electric swivels/plugs at truck end lift end of boom slightly with boom all the way extended straight out , remove acess panel (both sides) at jct of upper/lower boom section . remove C clip one side drive out pin oppisite side (wiggle boom to clear pin) locate stops in lower section boom end unbolt , slowly pull upper boom with crane away take care of hydraulic lines and electric wires set on floor on wood cribbing , locate bottom of cylinder truck end find C clip and pin Might be behind a trim cover that might need to be remove drive out pin also remove bottom cylinder hyd hose connect crane to cylinder end move out a foot or so remove top cyliinder hydraulic hose then carefully slide out cylinider with crane , Note if your valves are not tight and new oil will leak back and cause boom base to sag when you unhook hydraulic hoses , your gonna need to block this up with wood cribbing just in case

reverse removal process to install new one , also i would not just install a new seal (you can) with out having cylinder recromed I'll bet it's rusty thats what tears the seals up
and allways replace entire oil volume in hydraulics your old seal is in old oil not good for the new one

Apr 26, 2014 | 1985 Chevrolet Chevy

1 Answer

I have a 97' daewoo dsl601 skid steer that the boom and bucket won't move


You most likely have a defective hydraulic control valve, I would start the testing there.

Dec 07, 2011 | Daewoo Cars & Trucks

1 Answer

The plow will work fine for a hour. After that the plow gets real slow. Note older stlye hydraulic under the hood cables. I changed the fluid a couple of times. Everything is tight.


It may be the seals swelling as the fluid heats up from use. Are you using trans. fluid or the 'blue stuff' designed for hydraulic systems? I had a similar problem with my 1st plow truck, I found that spraying the seals at the shafts of the up/down piston and angle pistons seemed to help, although only for a while, requiring spraying every few driveways. Some fluids (trans.) can cause the seals to swell, although I can't recall what type. Unfortunately, to really fix this you probably need to drain the system again, and replace all the seals, and refill with the 'blue' fluid.

Feb 25, 2010 | 2000 Dodge Ram 1500 Truck

2 Answers

The whells lock while you are driveing ive changed the master cylender they still lock


this problem is caused by a defective ABS hydraulic control valve, it is leaking pressure to the brakes,.

Nov 23, 2009 | 1993 Jeep Grand Cherokee

2 Answers

03 Windstar makes a whining noise when idling and turning. Sounds like it is coming from steering column. Power steering fluid level is good.


When you checked the power steering fluid level were there any indications of excessive foaming? There are three things that would cause a whining noise from the power steering. 1- low fluid (you checked that so that is not the culprit), 2- loose steering drive belt (you should not be able to press down on the belt more that about one inch between the steering pump pulley and the crankshaft pulley), 3- power steering pump bearing worn out.

Nov 02, 2009 | 2003 Ford Windstar

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

106 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

74896 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...