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The footrest fails to elevate when remote used: instead air blows out from near the footrest.? Hose connecting hydraulics loose or disconnected

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The O ring in the hydraulic pressure valve on John Dere 4720 keeps fail. What O ring size and material spec should I use to stop failures?


Hydraulic pump may be sucking air causing oring to blow out.. Air causes problems when mixed with oil under pressure. Check and tighten all fittings and connections to hydraulic pump. Be sure Full of fluid and filter clean.

Nov 20, 2016 | John Deere Garden

1 Answer

How do I replace hydraulic line from pump to right arm on my 96 753 bobcat


to replace hoses on hydraulic equipment you have to have all the parts in the relaxed position clean the area of the connections so that dirt will not get into the system.

that is the bucket on the ground, allowed to tilt forward

nothing can be held under hydraulic pressure

the engine should be shut off

use spanners to undo hose fittings (no hands)

ensure a safe work procedure and wear rubber gloves , eye ware ,face shield and keep hands away from connections ---oil under pressure can penetrate the skin and cause immediate death ---

once you have the hose disconnected replace it with a new hose

after fitting the new hose and tightening the fittings ,start the engine and cycle the hydraulics as this eliminates the air in the system

Jul 27, 2015 | Cars & Trucks

1 Answer

Precor error codes 53


Precor Error 53, Can't Read Target, Can't Find Home Switch Probable Cause 1. Blown F2 fuse.
2. Home switch wiring is damaged or has intermittent connection.
3. Gear (elevation/incline) motor wiring is damaged or has intermittent connection.
4. Home switch is bad.
5. Gear (elevation/incline) motor is bad.
6. Gear (elevation/incline) motor target is damaged.
7. Lower PCA is bad.
Corrective Action
  1. Disconnect power from the unit. Remove the F2 fuse from the lower PCA. Using an ohm meter, measure the fuse for 1 ohm or less. If the reading is considerably high, replace the fuse. If the fuse is blown, inspect further for the cause to avoid the fuse blowing again. Inspect for damaged gear motor wiring or a bad gear (elevation/incline) motor. Replace if necessary.
  2. Thoroughly inspect the home switch wiring for damage or intermittent connections. Repair or replace damaged wiring or poor connections as necessary.
  3. Thoroughly inspect the gear (elevation/incline) motor wiring for damage or intermittent connections. Repair or replace damaged wiring or poor connections as necessary.
  4. Ensure the moving arm is away from the home switch and disconnect power from the unit. Disconnect both wires from the home switch. Using an ohm meter, check for approximately 0 ohms. Continue to monitor the home switch resistance and activate the home switch by hand. The reading should change from approximately 0 ohms to open (infinite). If either reading is considerably incorrect, replace the home switch.
  5. With unit disconnected from power, disconnect both wires from the gear (elevation/incline) motor. Using an ohm meter, check for approximately 9 ohms through the gear (elevation/incline) motor wiring. If the reading is considerably high or low, replace the gear motor.
  6. Inspect the gear (elevation/incline) motor target for rips, tears, or bad scratches. If any of these are found, replace the target.
  7. During the start up sequence, check the voltage at the gear (elevation/incline) motor. Voltage should be approximately 12VDC. The voltage should only be present between the time the sequence was started and the error 53 occurred. If the voltage is considerably low or absent and the F2 fuse proved good, replace the lower PCA.
Precor Error Code 53

Nov 02, 2013 | Cars & Trucks

1 Answer

Block in line


Disconnect the power, release the air pressure with the release valve, disconnect the hose, get to a shop air compressor and stick an air chuck in one end of the hose and blow the debri out and if this doesn't work, then replace the hose.....



Hope this works for you....

May 17, 2013 | Cars & Trucks

1 Answer

Hose disconnected from valve near battery Cadillac catera 97


If its blowing air out you are dealing with your air injection system.These consist of a air pump, air pump check valve air pump relay,and of course your vehicle wont sound right,exhaust is leaking out and it will just get worse,your fix is a air check valve the hose and also have the air pump inspected because if it frozed or is non operational,it will take out the air check valve12_7_2012_4_17_31_am.gif12_7_2012_4_17_54_am.gif

Dec 07, 2012 | Cadillac Catera Cars & Trucks

1 Answer

I have a 1992 Crysler Imperial. The ABS light is on and the ABS pump runs all the time. Help.


Either the ABS Module is bad or the Pump is bad--- Pump REMOVAL & INSTALLATION 1989-90 Models
  1. Disconnect the negative battery cable. Depressurize the hydraulic accumulator. CAUTION
    Failure to depressurize the hydraulic accumulator, prior to performing this operation may result in personal injury and/or damage to the painted surfaces.
  2. Remove the fresh air intake ducts.
  3. Disconnect all electrical connectors to the pump motor.
  4. Disconnect the high and low pressure hoses from the hydraulic assembly. Cap the spigot on the reservoir.
  5. Disconnect the shift selection cable bracket from the transaxle and move it aside.
  6. Loosen the nuts on the 2 studs that position the pump/motor to the transaxle differential cover.
  7. Remove the retainer bolts that are used to mount hose bracket and pump/motor. The engine inlet water extension pipe is also held in position by these bolts. NOTE: Do not disturb the inlet water extension pipe, or engine coolant will leak out.
  8. Disconnect the wiring harness retaining clip from the hose bracket.
  9. Lift the pump/motor assembly off of the studs and out of the vehicle.
  10. Remove the heat shield from the pump/motor, if equipped and discard. To install:
  11. Place a new heat shield onto the pump/motor bracket, using fasteners provided.
  12. Install the pump/motor assembly onto the studs.
  13. Install the wiring harness retaining clip onto the hose bracket.
  14. Install the retainer bolts to the hose bracket and pump/motor. Tighten securely.
  15. Tighten the 2 nuts until secure.
  16. Install the shift selection cable bracket onto the transaxle.
  17. Connect the high and low pressure hoses to the hydraulic assembly and tighten to 13 ft. lbs. (17 Nm).
  18. Attach all electrical connectors to the pump/motor.
  19. Install the air ducts.
  20. Readjust the gearshift linkage, if it was disturbed.
  21. Connect the negative battery cable and check the assembly for proper operation.
1991-95 Models
  1. Disconnect the negative battery cable. CAUTION
    Failure to depressurize the hydraulic accumulator, prior to performing this operation may result in personal injury and/or damage to the painted surfaces.
  2. Depressurize the brake system.
  3. Remove the fresh air intake ducts from the engine.
  4. Remove the clip holding the high pressure line to the battery tray.
  5. Disconnect the electrical connectors running across the engine compartment in the vicinity of the pump/motor high and low pressure hoses. One of these connectors is the one for the pump/motor assembly.
  6. Disconnect the high and low pressure hoses from the hydraulic assembly. Cap or plug the reservoir fitting.
  7. Disconnect the pump/motor electrical connector from the engine mount.
  8. Remove the heat shield bolt from the front of the pump bracket. Remove the heat shield.
  9. Lift the pump/motor assembly from the bracket and out of the vehicle. Fig. 1: The pump/motor assembly mounts to the top of the transaxle case and is covered by a heat shield 86729g75.gif
    To install:
  10. Fit the pump motor assembly onto the bracket; install the heat shield and its retaining bolt.
  11. Install the pump/motor electrical connector to the engine mount.
  12. Connect the high and low pressure hose to the hydraulic assembly. Tighten the high pressure line to 145 inch lbs. (16 Nm). Tighten the hose clamp on the low pressure hose to 10 inch lbs. (1 Nm).
  13. Connect the electrical connectors which were removed for access.
  14. Install the high pressure line retaining clip to the battery tray if it was removed.
  15. Install the fresh air intake ducts.
  16. Bleed the brake system.
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Oct 07, 2010 | 1991 Chrysler Imperial

1 Answer

Trying to find the name of this hose or tube that is connected by the air filter and goes across the engine and reconnets by the brake fluid resevoir


The hose you are talking about might be a vacuum hose. A vacuum hose usually connects from somewhere near the air filter like on the intake manifold and to the brake assist device. If the tube is rubber and can be disconnected at the brake you can check to see if that is what it is by placing your thumb over the open end instead of the brake assist while the engine is idleing. If it is a vacuum hose then you will be able to feel the suction of the intake system. With the vacuum hose open to the air the engine will probably idle poorly. I hope this helps.

Aug 28, 2009 | 1998 GMC Yukon

1 Answer

Leaking in back and on sides of machine


the hose for your water pressure switch it clogged not allowing the air pressure in it to increase to the point that the switch tells your water to shut off at the proper level. Tkake the back loose and follow the clear hose up into the control panel, disconnect from pressure switch and either blow or use small blast of compressed air in this tube t clear the clogg. Powder detergents are famous for clogging this line.

Apr 06, 2009 | Whirlpool LSR5132PQ Top Load Washer

1 Answer

Attachments hose won't **** but blows out


the polarity on the motor mite change with use or low suctoin

Dec 20, 2008 | Bissell 3576 CleanView II Bagless Upright...

1 Answer

Air conditioner and heat only blowing through defrost vents and back only blowing hot air


Sounds like you have an a/c hose disconnected. Check for all loose connections.

Aug 04, 2008 | Heating & Cooling

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