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Case david brown 885 hydraulics. need a diagram of hydraulic system/valve block to show valves and adjustments etc. Rear arms were working fine then will not go down. tractor belongs a friend who has had valve block in bits several times so i need to start from scratch.

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Jack_Dawson
  • 287 Answers

SOURCE: where can I find the system hydraulic diagram for

check this link :
http://www.ioffer.com/i/CASE-580C-580-C-LOADER-BACKHOE-TRACTOR-SERVICE-MANUAL-117272901

Posted on Jan 01, 2010

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blueextc3221
  • 15935 Answers

SOURCE: system creeps down even when tractor is operating.

There are 2 potential problems -
1. Leaking spool on the control valve - rebuild the vale.

2. Cylinder blow-by. Disassemble piston and replace the seals.

To test if its the cylinder - retract the cylinders all the way... remove the hoses on the blind end (non rod end) of each cylinder, and again pull the valve to the retract position.

If fluid continues to pour out of the cylinder - the piston seal is damaged, and the affected cylinder must be repaired.

To test if the valve spool is faulty - disconnect the a and b ports just after the valve. Turn on the system and check for seepage from the disconnected lines (without moving the lever).

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Posted on Apr 19, 2009

housejess
  • 317 Answers

SOURCE: Ford TRactor 1710 hydraulic problem

raise front loader....loosen hyd. line a little lower loader till all air is released and only fluid is coming out and retighten.....its like bleedig brakes on a car

Posted on Nov 17, 2009

c7121
  • 160 Answers

SOURCE: Business in Australia urgently requires hydraulic

CRUSHTEK IS NO LONGER IN BUSINESS...THIS SHOULD HELP:
for calls outside of the USA 001-775-356-9554
Postal Address:
Ericson Industries Inc.
260 Freeport Blvd,
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USA 89431

IF THIS HELPS MAYBE U COULD SPONSOR ME. I REALLY DESIRE A JOB IN AUSTRALIA.
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JOHN

Posted on Jan 14, 2010

  • 172 Answers

SOURCE: 1967 case 990 tractor. My hydraulics raise but I

On the right hand side of the axle on top is a cover with 2 slotted bolts holding it on. Pull this and you will see additional linkage, and a heavy cable which conrols the rockshaft. There should also be 2 valves under this cover. Pull the valves out, inspect for damage, clean them up real good and reinstall. If it continues to leak off at the rockshaft with hand pressure, Then readjust the linkages. NOTE: There are 7 adjustments to the linkage to get this to operate properly, each adjustment affects the sensitivity of the rockshaft and need to be done in sequence. Yours is a David Brown 990 tractor. Your Case dealership will have the manuals for the adjustment procedure. If after adjustment, it continues to leak off, you will need to pull the rockshaft cylinder inside the axle and have it rebuilt.

Posted on Jan 21, 2010

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1996 camery station wagon , 4 wheel disc brakes. need to replace brake lines in the rear. what is the name of the junction block , with the actuator in the rear? All 4 rear lines go to and leave this...


Hello, first you Toyota has dual braking system. It goes like this: Left front brake with right rear brake, the right front brake with left rear brake. This a braking safety system that has been incorporated in auto/trucks for a few years now. If brake line is broken. loose wheel caliper, blow caliper piston, any thing that happens to the brake system. You will still have two wheels that have their hydraulic system. Also, the emergency brake will a manual system for the rear wheels.


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Another thing to remember about this rear load valve, they will get plugged. and the vehicle will not have enough braking pressure for the rear wheels. I hope I answer you question about this load portion valve in the rear of Toyota. GB...stewbison

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I need the engine valve spec for a 1984 chevy 6.2 diesel. We are adjusting the valves.


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1967 case 990 tractor. My hydraulics raise but I can push them down by hand. I just purchased the tractor when I noticed water in the oil. I would like to test system pressure but I'm not sure at what...


On the right hand side of the axle on top is a cover with 2 slotted bolts holding it on. Pull this and you will see additional linkage, and a heavy cable which conrols the rockshaft. There should also be 2 valves under this cover. Pull the valves out, inspect for damage, clean them up real good and reinstall. If it continues to leak off at the rockshaft with hand pressure, Then readjust the linkages. NOTE: There are 7 adjustments to the linkage to get this to operate properly, each adjustment affects the sensitivity of the rockshaft and need to be done in sequence. Yours is a David Brown 990 tractor. Your Case dealership will have the manuals for the adjustment procedure. If after adjustment, it continues to leak off, you will need to pull the rockshaft cylinder inside the axle and have it rebuilt.

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There is a ticking sound coming from teh drivers side of the motor top end when i start it up when i drive it goes away but its there when i start it or ideling


In order to give you a solution to your problem, I need to explain a little bit about the valve train in your engine, the engine itself, and how it works.

1.You have an Internal Combustion engine. It is a Four Stroke engine. The engine has a Cylinder Block with cylinders inside. There is a piston for each cylinder which goes up, and down. The piston/s are connected to a crankshaft. The crankshaft turns the transmission, which in turn turns the driveshaft, to the rear differential. The rear differential has axles, which the rear wheels are bolted to. The four strokes are , Intake Stroke, Compression Stroke, Combustion Stroke, and Exhaust Stroke.

The piston goes down the cylinder drawing the fuel/air mixture in. (Intake Stroke) The Intake valve opens. The piston comes back up the cylinder, and Compresses the fuel/air mixture. (Compression Stroke) Both the Intake and Exhaust valve are closed. The spark plug fires igniting the fuel/air mixture, and shoves the piston down. (Combustion Stroke) Finally the Exhaust valve opens, and expels the burnt gases. (Exhaust Stroke)
This page on Wikipedia.org, may help explain the process. The third 'photo' down on the right is an animation showing the process.
http://en.wikipedia.org/wiki/Internal_combustion_engine
The animation shows an engine with an Overhead Camshaft. Your camshaft is located in the Cylinder Block, and not in the Cylinder Head, as shown.

2.Your Camshaft is a shaft with egg shaped lobes on it. As the tip of the egg shape comes to the top, it pushes up on a Hydraulic Lifter. This lifter in turn pushes up on a Pushrod, which pushes up on a Rocker Arm. The Rocker Arm in turn pushes down on either the Intake Valve, or the Exhaust Valve, opening them.

A Rocker Arm is shaped a lot like a See-saw. Just like the one's at a child's playground. As one side goes up, the other side comes down. The Pushrod pushes up on one side of the Rocker Arm, and the other side of the Rocker Arm pushes down on the valve, opening it.

A Hydraulic Lifter is a small cylinder that has a piston in it. Oil goes through a tiny hole in the side of the lifter, and this keeps the piston in a certain position. (That's why this lifter is named 'Hydraulic', because it uses oil inside) The Pushrod rests on this piston. The hydraulic action of the Hydraulic Lifter, keeps slack out of the valve train. The pushrod to rocker arm distance, and the rocker arm to valve distance.

What you are hearing, is a clicking sound from clearance being created, in-between the pushrod to rocker arm, and/or rocker arm to valve stem. A metal to metal clicking sound.

Solution? Depends on how mechanically inclined you are, or you may want to refer this job to an auto repair shop. The valve cover needs to be removed, and the nut on each rocker arm needs to be adjusted. Adjusting the nut down, (Clockwise), pushes the rocker arm down on the rocker arm stud, a little. This removes the slack, and makes things nice, and quiet again. Your engine will also run better, and you'll get better gas mileage.

DON'T do this, or have it down, and eventually the slack that is in there will increase. This will break parts! There IS a technique in doing this. If you know of someone who is good at adjusting valves, they can do it. They MUST be good however. If you adjust the Rocker Arm Nut too far down, you will lose power, and the exhaust valve face will burn. Not far enough down, and you get the clicking sound you hear now. About 1/4 turn down, to 1/2 turn down, should do it.

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