:agree:
It's also possible something in the drive train and not the engine. Loose brake shoe. Shock absorber mount, Spring bushing, etc. Been there and I know it can be a bi,,,er, difficult to pinpoint.
The hoses on all 2.5MJ-XJ should be the same. Also AC fittings are fairly standard. Take your two old hoses and hit the JY. Look for Jeep and GM vehicles. Any hose fabrication shop can make up a pair, for a price. If all else fails let me know. I probably got a set you can have.
Learn to use what ya got first. Then after learning a little bit you'll be in a better position to know what you need. Age of a welder has nothing to do with it. It's quality that counts. In 1958 I bought a 15 year old Craftsman with 100 ft of power cable and 50ft of welding cable, a helmet and a bunch of rod for $50. I'm still using it and it turns out some damn nice work. I also have a Millermatic Mig and a Lincoln Ranger. My father in law bought a shiney new Hobart gas powered in the '50's sometime. I inheireted it and it still works great.I prefer the ol Craftsman. You can go out and buy the latest rig with all the bells and whistles you want, but that's not going to make you a welder. Only practice will do that.
You either have something on or a short in the circuit. A dirty battery top will discharge a battery but if yours is new that shouldn't be problem. A bad diode in the alternator will kill a battery. Get a amp meter. Remove the negative battery terminal and insert the meter in the circuit. In a good circuit it will read zero. Note the reading. Now remove one wire at a time from the relay, the one right in front of the battery, and watch the meter. Also go to the fuse panel. Pull one fuse at a time until you find the shorted circuit. If you don't have a meter get one. They're cheap and you will be using it enough to justify the cost. In a emergency use a light bulb. A single element is best but a double element will work. Put it in in place of the meter. If the bulb lights you have a current flow, IE, a short.
My error. The jack does indeed mount behind the driver. Must of been thinking of a S10.Out of 11 Mj's 9 have the original jacks, jack handle and lug wrench. One has a broken spare tire winch cable. The other 10 works OK.
1994 Grand Cherokee.4.0l, 42RE, 4WD.It wasn't mine. Belonged to this idiot in town. Brought it out to me to see if I could fix it. Transmission was slipping. I test drove it. Transmission was slipping bad and oil pressure was around 10-15lbs. I suggested he not drive it any more until he got it fixed. He ignored me. Thing wouldn't go so he just floor boarded it until the engine went. I gave him $50 and a ride back to town for the thing. Got another motor and tranny at the JY. $700. That hurt. Got a dozen motors and trannys but different years. Got the drive train mounted and the accessories in. Just got the wiring left to do