Wear on steering box doze high pressure hose go

Causes of Power Steering to fail.

• Contamination problems occur more frequently in rack and pinion power steering systems. Contamination can occur when pumps fail, hoses deteriorate, or moisture gets into the power steering fluid. All of these problems result in material contaminating the power steering fluid which can plug small orifices in the steering system, increase friction, and interfere with the fluids hydraulic characteristics, resulting in a failure of the power steering system.

Low fluid

• Low power steering fluid levels reduce the amount of hydraulic pressure created by the power steering pump, resulting in hard steering. Low fluid levels also cause increased wear of the power steering pump from inadequate lubrication and high fluid temperatures which further accelerates pump wear. Low power steering fluid can cause a power steering pump to wear out prematurely and can result in the eventual failure of the power steering system if not corrected.

Snapped belt

• Many vehicles use power steering pumps which are driven by a belt connected to the crankshaft of the engine. Worn belts can slip causing a reduction in the fluid pressure produced by the power steering pump, which increases the effort needed to operate the steering system. Power steering belts that catastrophically cause an immediate loss of power steering as the pump is no longer being driven by the engine.

Worn pump

• As power steering pumps are operated and age they wear out. The seals and internal parts of the power steering pump break down over time and lead to an incremental loss of fluid pressure. As the pump wears out, pump noise and steering effort increases. Worn out pumps will eventually fail, leading to a total loss of fluid pressure and a failure of the power steering system.

Leaks

• Power steering systems require hydraulic fluid to operate. Hydraulic power steering fluid can leak from worn or damaged hoses and failing seals. When enough fluid is lost, the power steering pump can overheat or wear out prematurely, resulting in a loss of hydraulic pressure and failure of the power steering system.

power steering hoses run from pump to the steering box, (high pressure) and from the steering box to pump (low side).. is a closed connection. pump to box, then from box back to pump. High pressure should have pressed on fittings, while low side may have normal water hose clamps or replaceable hose without pressed on fittings.

There may be an issue with a pressure control valve.

I just finished replacing mine.

It is much easier if you do these steps:

1. Remove the serpentine belt.
2. Remove the nuts holding the main fuse box over the battery.
3. Remove the reinforcing bar over the battery.
4. Remove the battery.
5. Remove the windsheild washer tank.
6. Now you have access to remove the pump pulley. Without removing the stuff, it may be possible, but it will be extremely difficult.
7. Remove the pump pulley.
8. Loosen the high pressure hose fitting.
9. Remove the return line clamp.
10. Remove the power steering pump mounting bolts.
11. Remove the high pressure hose fitting.
12. Remove the power steering pump while sliding off the low pressure hose.
13. Remove the clips holding the reservoir on the pump.
14. Remove the reservoir.
15. Install new o-ring on the reservoir.
16. Install reservoir on new pump.
17. Install clips to hold reservoir on pump.
18. Install new o-ring on high pressure fitting.
19. Place new pump in position while sliding on low pressure hose.
20. Loosely attache high pressure fitting.
21. Tighten pump to mounts.
22. Tighten high pressure fitting.
23. Install clamp on low pressure hose.
24. Install power steering pulley.
25. Install washer reservoir.
26. Install battery.
27. Install reinforcing cross member.
28. Install fuse panel.
29. Install serpentine belt.
30. Bleed the power steering system.

lines not in the correct ports

low pressure hoses are clamped
high pressure are screwed in some how there is a cross porting causing the lock up problem and that is putting high pressure into the low pressure port

I just finished replacing mine.

It is much easier if you do these steps:

1. Remove the serpentine belt.
2. Remove the nuts holding the main fuse box over the battery.
3. Remove the reinforcing bar over the battery.
4. Remove the battery.
5. Remove the windsheild washer tank.
6. Now you have access to remove the pump pulley. Without removing the stuff, it may be possible, but it will be extremely difficult.
7. Remove the pump pulley.
8. Loosen the high pressure hose fitting.
9. Remove the return line clamp.
10. Remove the power steering pump mounting bolts.
11. Remove the high pressure hose fitting.
12. Remove the power steering pump while sliding off the low pressure hose.
13. Remove the clips holding the reservoir on the pump.
14. Remove the reservoir.
15. Install new o-ring on the reservoir.
16. Install reservoir on new pump.
17. Install clips to hold reservoir on pump.
18. Install new o-ring on high pressure fitting.
19. Place new pump in position while sliding on low pressure hose.
20. Loosely attache high pressure fitting.
21. Tighten pump to mounts.
22. Tighten high pressure fitting.
23. Install clamp on low pressure hose.
24. Install power steering pulley.
25. Install washer reservoir.
26. Install battery.
27. Install reinforcing cross member.
28. Install fuse panel.
29. Install serpentine belt.
30. Bleed the power steering system.

hmmm..which high pressure hose the a/c or power steering hose...if its the a/c u need to take this to a service center. removing the high pressure hose without recovering the freon can cause serious injury.it is under extreme high pressure at all times even when the truck is not running... if its the power steering hose then start by removing the plastic shield in the steering staft at the steering box on the drivers side frame loosen the 18mm line nut then follow it to the other line nut on the back of the power steering pump....but sometimes the pump may need to be removed to to this, if this is the case i recommend u take it to a service center

RETURN TURN LINE GOES TO THE LEFT OF RACK PINION AND HIGH PRESSURE HOSE GOES TO THE RIGHT OF RACK PINION.LOOKING AT POWER STEERING PUMP HIGH PRESSURE HOSE THICK HOSE SCREWS INTO POWER STEERING PUMP.WHILE LOW PRESSURE HOSE HAS A HOSE WITH A CLAMP THE LOW PRESSURE HOSE HOOKS TO TOP OF POWER STEERING PUMP.LOW PRESSURE DONT SCREW INTO POWER STEERING PUMP IT IS HELD IN PLACE BY A HOSE SMALL CLAMP.

When you crank the engine, it rotates the pulley on the power steering pump. As the pump spins the fluid passes through the pump, rack and pinion and the high and low pressure lines. The high pressure lines are usually the culprit. The high pressure line can be identified as a metal line going into a rubber hose off of the power steering pump. Have someone crank the engine as you trace the leak. Be sure to wear safety equipment, like safety glasses and gloves to protect yourself from any squirting fluid.

YOU CANT USE A REGULAR FUEL LINE ON POWER STEERING AS A HIGH PRESSURE HOSE.BECAUSE POWER STEERING PRESSURE IS 1000 PSI.YOU HAVE TO BUY THE POWER STEERING HIGH PRESSURE HOSE IT HAS NUMBER OF PLIES MATERIAL WEAVES TO MAKE IT STRONG.IT WAS MADE FOR POWER STEERING HIGH PRESSURE.YOU DONT HAVE A BLOCKAGE .THE HIGH PRESSURE HOSE JUST WORE OUT.REPLACE IT .IT SHOULD FIX THE PROBLEM.