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I need help with the hydraulic system.


The hydraulic system is the problem either the PTO is leaking or not pumping this controls all of the switches lights .Check your fluid levels and all filters in line look for leaks

Aug 27, 2016 | Seat Cars & Trucks

1 Answer

I added diesel to the hydraulic tank in my bobcat and never an it. I drained the tank, refilled it, and now the hydraulic system wont work.


You should use hydraulic oil, not diesel, drain it, refill it and if necessary bleed all the air from the system (some are self bleeding) Dependant on the type of hydraulic system you may have damaged the seals by using diesel oil, that, unfortunately is expensive.

Mar 05, 2015 | Bobcat 773

1 Answer

Hyraulic brake pump is bad i need a replacement


Are you sure the hydraulic motor is bad?....as it's usually a problem with a relay and/or the pressure switch.

LEARNING ABOUT THE "TEVES" BRAKE SYSTEM
The hydraulic brake booster on a late model Mark VII and early Continental is very different from most. It is equipped with something known as a "TEVES" brake system.
The main parts in the system that we will discuss include an ACCUMULATOR, a HYDRAULIC PUMP, a hydraulic pump RELAY, and a PRESSURE SWITCH. These are the key players in this operation.

THE LOCATION OF THESE PARTS ARE AS FOLLOWS:
HYDRAULIC PUMP MOTOR= Underneath the brake assembly (2 pin connector) Hydraulic pump motor
RELAY = On the drivers side strut tower
PRESSURE SWITCH = 5 pin connector facing the # 7 or 8 spark plug(drivers side)
ACCUMULATOR = Round black ball on the drivers side

WHAT THESE ITEMS DO:
HYDRAULIC PUMP MOTOR is an electric hydraulic pump used to "boost" pressure for the brake assembly. This pump is $900 new!
hydraulic pump motor RELAY is just what its sounds like. It gives the hydraulic pump motor power to come on.
PRESSURE SWITCH is the "brains" in the system. It senses how much pressure is "on line", and when the system needs more pressure, it tells the relay to "power up" the hydraulic pump motor.
Another one of its jobs is to turn on the RED BRAKE LIGHT, then the ANTI-LOCK lights to alert the driver that the pressure is dangerously low. (The reason the anti-lock light comes on, is because the ABS cannot function if there's a problem with the manual brakes)
ACCUMULATOR stores energy or pressure like a reservoir. Its there so the hydraulic pump motor only has to come on every 3rd or 5th time. Its design is more complicated, but basically the same principle as an air tank on a compressor.

WHAT NORMALLY HAPPENS:
What usually happens is, in time, the accumulator gets weak with age and can't hold the pressure like it was designed too, and therefore, the hydraulic motor comes on every time the brakes are applied....rather than every 3rd or 5th time. This means all these parts are working 3 or 5 times more than they were designed to. This puts an extreme amount of pressure on an already old system.
What we know from this is, the accumulator needs replacing because it's what started all this, but now the pressure switch and relay needs replacement also because it has worked overworked.
NOTE: always replace the relay when replacing the pressure switch. The relay came on every time the pressure switch told it too, so if one is worn out....the others not far behind!
hyraulic-brake-pump-bad-need-replacement-q5d1cnsm5fkb13bp03i0fxgj-5-0.gif

Sep 09, 2012 | 1990 Lincoln Mark VII

1 Answer

Jeep cherokee limited 1991 (with abs) brakes wont work


I don't see why not.
Technically, the hydraulic brake system works independently from the ABS. The ABS system uses the regular hydraulic system to function.
So your regular hydraulic system should work even with the ABS system in place.

Sep 01, 2012 | 1991 Jeep Cherokee Limited

1 Answer

Vw pasat 1.9 tdi. Car has become difficult to get into gear but drives perfectly when in gear no great difficulty changing gear when car in motion. Does the 1999 Pasat operate on a clutch cable or...


The clutch is operated by hydraulic system. before you change gears, press the clutch pedal few times to increase the pressure in the hydraulic system. if it improves it then there is a leak in the hydraulic system. comen component to fail are Slave cylinder or masture cylinder. Good luck.....

Jun 12, 2011 | 1999 Volkswagen Passat

1 Answer

How to replace 1989 gmc slave cilynder


Disconnect the negative battery cable.
raise the vehicle and support it safely.
disconnect the hydraulic line from the secondary cylinder.
disconnect the hydraulic line from the master cylinder.
on all models except the 1988-90 C/K series, remove the nut retaining the hydraulic line and the speedometer cable to the cowl, than install the nut to hold the speedometer cable in place.
cover all hydraulic line to prevent dirt and moisture from entering the system.
installation is the reverse of removal. bleed the clutch hydraulic system.....
Hope this helps ????

Jun 01, 2011 | GMC Sierra Cars & Trucks

1 Answer

My clutch is not angaging need to see how can i bleed


Hydraulic Clutch System BLEEDING The clutch system can be bled using a pressure bleeder. Follow the instructions that come with the pressure bleeder for the proper pressure bleeding procedure. The maximum line pressure while pressure bleeding must not exceed 36 psi (248 kPa). NOTE: To bleed a clutch manually requires the assistance of a second person, a section of hose that is compatible with brake fluid (preferably clear) and fits the slave cylinder bleed screw snugly and a container to catch the fluid that is bled through the system. As brake hydraulic fluid easily absorbs moisture, always use fresh fluid when bleeding a hydraulic system.
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. To bleed the system perform the following:
    1. Top off the hydraulic fluid reservoir using a fluid that meets the standards of the vehicle's hydraulic system.
    2. Open the clutch slave cylinder bleed screw and press the clutch pedal to the floor and hold the pedal down.
    3. Close the clutch slave cylinder bleed screw.
    4. Release the clutch pedal.
    5. Check the hydraulic fluid level and top off as necessary.
  3. Repeat the above steps until the discharged fluid is clean and no air bubbles appear during the bleeding process.
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Aug 03, 2010 | 1998 Audi A4

1 Answer

Hydraulic system develops a loud squealing noise when under load


Hydraulic system to the brakes means that the brake pads needs to be replaced. Hydraulic system to the clutch means that the throw out bearing needs to be replace.

Good luck

Nov 17, 2009 | 1998 Volkswagen Jetta

2 Answers

Hydraulics Question


Heating of hydraulic fluid in operation is caused by inefficiencies. Inefficiencies result in losses of input power, which are converted to heat. A hydraulic system's heat load is equal to the total power lost (PL) through inefficiencies and can be expressed as: PLtotal = PLpump + PLvalves + PLplumbing + PLactuators If the total input power lost to heat is greater than the heat dissipated, the hydraulic system will eventually overheat.

Aug 27, 2008 | Black & Decker/DWLT DW2513 15-Piece Rapid...

1 Answer

Drill problem


Heating of hydraulic fluid in operation is caused by inefficiencies. Inefficiencies result in losses of input power, which are converted to heat. A hydraulic system's heat load is equal to the total power lost (PL) through inefficiencies and can be expressed as: PLtotal = PLpump + PLvalves + PLplumbing + PLactuators If the total input power lost to heat is greater than the heat dissipated, the hydraulic system will eventually overheat.

Aug 27, 2008 | Bosch PC11PCM Power Change BiMetal Master...

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