After I replaced the power steering pump and reservoir on my 2002 Jeep, I still get air in the system. Where could it be coming from?
Your problem could be a pressure side hose that has a rupture that only leaks in extreme conditions. Inspect to replace with new to repair problem. First make sure you have removed the pump caps off of the hose fittings. If ok, it appears you may have a stuck valve in the rack assembly. Replacing the rack should solve your problem.
The new pump should be self-bleeding by turning the wheels left and right. Let sit over night to release air bubbles, recheck fluid level.------
Check the tension of the drive belts on the pump, as they may be loose.
The power steering pump and reservoir is located on the front of the engine driven by one of the fan belts. There is a removable cap on the top with a dipstick attached. With the engine off, fill this up to the full mark with power steering fluid. Replace the cap, start the engine and check for leaks. On the back of the pump are two hoses either one could be leaking.
1. Wipe the power steering cap and area free of dirt. Remove the power steering cap.
2. Use a siphon pump to remove as much fluid as possible from the power steering fluid reservoir.
3. With a helper in the vehicle, raise the vehicle on an appropriate hoist.
WARNING :POWER STEERING FLUID, ENGINE PARTS, AND THE EXHAUST SYSTEM MAY BE EXTREMELY HOT IF THE ENGINE HAS BEEN RUNNING. DO NOT START ENGINE WITH ANY LOOSE OR DISCONNECTED HOSES. DO NOT ALLOW HOSES OR POWER STEERING FLUID TO TOUCH HOT EXHAUST MANI FOLD OR CATALYST.
4. Locate the power steering cooler attached to the crossmember support plate. Slide back the clamp and disconnect one of the two power steering return hoses at the power steering oil cooler and drain fluid in an appropriate container.
5. Have the helper turn the steering wheel back and forth quickly several times to force as much fluid as possible from the steering gear.
6. Reconnect the hose at the oil cooler using the original clamp.
7. Lower vehicle so the vehicle tires are not contacting the ground.
9. For proper fluid fill and bleeding air from the power steering system:
a. Fill the power steering reservoir to the top of the fill range using Mopar power steering fluid (ATF+4) p/n 05013458AA.
b. With the engine OFF and the vehicles tires off the ground, slowly turn the steering wheel back and forth (lock to lock) slowly 20 times to force fluid into the steering gear.
c. Fill the power steering reservoir to the top of the fill range.
d. Start engine and let run for a few seconds, then turn oft engine.
e. Check fluid level and add if necessary.
f. Start engine, and slowly turn the steering wheel lightly contacting the left and right stops.
g. Stop the engine and check fluid level. Add fluid if necessary.
h. Lower vehicle, start engine and slowly turn steering wheel lock-to-lock.
I. Stop engine and check fluid level. Add fluid if necessary.
j. If fluid is extremely foamy, allow vehicle to stabilize a few minutes, then repeat steps "i" and "j" until the fluid level remains constant after running the engine and turning the steering wheel from lock to lock.
10. Inform the vehicle owner/operator that a steering vibration may be noted for a few hundred miles until the air is completely removed from the steering system.
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Jan 26, 2010 |
Jeep Grand Cherokee Cars & Trucks