Questions & Answers for: Jeep hydraulic oil

the pump to the Fan was replaced. Now the power steering and fan does not work. Inferior hydraulic oil was used by the mechanic. So I drained the oil and replaced it with the right oil. Problem solved

...oil and filter 4 run and check for tappet noise. This may improve things without opening things up. These engines are equipped with hydraulic valve lifters. No provision for adjustment is

...hydraulic lifters, but unless you dont change your oil every 5k miles and/or use some cheap oil, there should be no problems. You should have a real mechanic look at it, and verify that you have good ...

...measured, sounds like u may have a defective oil pump and the low oil pressure is allowing the hydraulic valve lifter to collapse, don't continue to drive this, u will burn out the engine

hydraulic lifters that pump oil up the push rods. I'm assuming you have the gas engine V-6 or V-8. When you changed the valve cover gasket(s), did you do anything else under the valve covers? It seems

...has an LSD differential it needs a special oil , if not it takes 80w-90 hydraulic oil. If the car has lsd diff . most of the cars hav a sticker with those initialls (LSD) just near the fill up

...oil in the hydraulic tappets drain the oil away and so when you restart the engine after you have changed the oil  the worn oil pump take some time to get new oil up and around the hydraulic ...

...oil pan. Now I have noise from lower part of engine I would think it is to do with your big end bearings or your small end bearings. Remember sound travel thru the engin. If it is a gasoline engine ...

it will crank over. It may have gotten a hydraulic lock due to the overfill of oil. With the spark plugs out it should purge out the hydraulic lock on oil if that is the case. Or it may be the starter

HYDRAULIC FAN CONTROL SOLENOID 6 - POWER STEERING OIL COOLER 7 - STEERING GEAR WK ENGINE 7 - 35 or pressure is reduced to within operating parameters the fan will ramp up, ramp down, or hold its speed