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Old 07-09-2010, 10:39 AM   #1
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Powerwashing Underbelly?

Google can't seem to get me an absolute yes or no here, so I thought I'd ask. Is it alright to power wash the underbelly of a TJ, minus the engine compartment? The undercarriage of mine is so caked with dirt and mud that I feel like a hose with a sprayer just isn't going to cut it.

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Old 07-09-2010, 10:42 AM   #2
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Should be fine, Nothing under there to hurt much afaik. Just don't have it running in gear when you do it... breather tubes and junk.... I've done mine, as have several others.

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Old 07-09-2010, 10:53 AM   #3
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Oh my gosh YES!!!!
Every time I take mine out I pressure wash the underside of it. I make sure to get it good in all of the nooks and crannies, around any bushings and joints and in the stinky spots too.
Also, under the hood doesn't hurt a thing.. I use lots of soapy water & suds on (of all things) a webster to get inside my hood compartment.

This weekend I had a brainstorm and decided to wash his underbelly while he was still up on the trailer. Man that was SO much easier!

Yea, a Jeep with a clean belly is a happy Jeep! Clean parts don't wear out as quickly and don't rust as quickly. Once you get it all scrubbed up be sure to run around with a grease gun and give it a little love.
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Old 07-09-2010, 10:59 AM   #4
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Once you get it all scrubbed up be sure to run around with a grease gun and give it a little love.
Yes, a little lube makes everything better.
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Old 07-09-2010, 11:17 AM   #5
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Another method is to park over a lawn sprinkler for a couple hours. You have to be careful with the tip you use with a power washer depending upon how powerful it is. Mine could strip the paint off.
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Old 07-09-2010, 11:31 AM   #6
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I've tried that sprinkler thing, and it might be just the nasty red clay we have out here but all it did was to run my water bill up.
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Old 07-09-2010, 11:31 AM   #7
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Just for gitts and shiggles take a flashlight and see how much mud is sitting on top the skidplate.
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Old 07-09-2010, 11:45 AM   #8
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Hah!
You'd be proud of me, I got it all out of there.
The one that worrys me a little is the gas tank skid.
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Old 07-09-2010, 01:34 PM   #9
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I turn on the sprinkler under it to soften it all up, and rinse off the easy stuff, then go after it with the power washer to help get what's left, cuss, and vow to never take her in the mud again...... till next time.
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Old 07-09-2010, 01:50 PM   #10
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Once you get it all scrubbed up be sure to run around with a grease gun and give it a little love.
What else are you greasing besides all the zirk fittings?
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Old 07-09-2010, 02:03 PM   #11
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That answers my question. Thanks all, good deal.
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Old 07-09-2010, 09:32 PM   #12
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I've tried that sprinkler thing, and it might be just the nasty red clay we have out here but all it did was to run my water bill up.
Watch it Kate. Not all red clay is nasty...
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Old 07-10-2010, 04:33 AM   #13
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Well out here it sure is.
Nothing grows in it, it gives trouble with septic tanks, sticks to my Jeep like concrete and on and on.

Hey! I'll sell it to you!
10 acres, nice little house, shop and a pond out in the country.
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Old 07-10-2010, 04:41 AM   #14
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What else are you greasing besides all the zirk fittings?
Pretty much the zerks. They're on everything that moves except a couple of ujoints in the front driveshaft. My door hinges, OBM has started using a special needle on the grease gun to put a little in my front driveshaft, it shoos off the angry sparrows.

Eventually I'll replace my ujoints with some that can be greased as well, but whenever the front shaft comes out I sneek a little in them when I can.

We always use a marine grade synthetic grease. Seems to hold up a little better. OBM is a retired heavy equipment mechanic so when it comes to this sort of thing I just get out of the way and let him do what he does best.
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Old 07-10-2010, 05:55 AM   #15
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Living in the snow belt I power wash all my vehicles. If i drive a car I'll dio the same weekly. Not much different as driving in the rain.
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Old 07-10-2010, 09:26 AM   #16
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Living in the snow belt I power wash all my vehicles. If i drive a car I'll dio the same weekly. Not much different as driving in the rain.
What are you talking about? We NEVER get snow in Iowa! haha. but yeah, with the amount of salt they use around here if you don't wash the underbody you won't have one for very long. You're not gonna hurt anything by washing under there.
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Old 07-10-2010, 09:29 AM   #17
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I mean green and power wash mine all the time.
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Old 07-10-2010, 10:08 AM   #18
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If you spray the engine compartment make sure the Jeep is not hot. I know this can be difficult, but spraying a hot engine with cold water is a big no no as the thermal contraction of the metal can cause cracks which runs into a very big problem. Dawn is a great degreaser.
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Old 07-10-2010, 11:32 AM   #19
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My red clay comment was a Gumby joke. I knew you youngsters wouldn't get it. ( I AM red clay !)
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Old 07-10-2010, 11:55 AM   #20
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My red clay comment was a Gumby joke. I knew you youngsters wouldn't get it. ( I AM red clay !)
Nice name drop!
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Old 07-10-2010, 12:11 PM   #21
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My red clay comment was a Gumby joke. I knew you youngsters wouldn't get it. ( I AM red clay !)
LMAO!
I'm no youngster! I used to watch Gumby & Pokey when I was a youngin' but don't remember much of it any more.
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Old 08-03-2010, 09:54 AM   #22
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Actually, one other question. I have a crane in my barn. The Jeep has an upside down V-shaped bumper guard in front. If I loop some straps around it an try lifting her up from there could I risk bending/breaking something? I'd just like to get the front end up a little bit so I don't have to powerwash it laying on my back :P
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Old 08-03-2010, 09:58 AM   #23
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i would say thats a no-no....post pix of the front bumper to be sure, but i would not.
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Old 08-03-2010, 10:30 AM   #24
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If its an aftermarket bumper thats made to handle loads like winch recovery, strap recovery, and using a hi lift....then why not. Just dont go underneath it.

Post a pic of the bumper, Im sure someone will be able to determine whether your bumper is made from a quality company that will hold up.
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Old 08-03-2010, 10:45 AM   #25
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and if you do dangle your jeep from a crain .. PLEASE PLEASE PLEASE POST PICTURES!!! It would be like catching the ultimate big one! SHARK WEEK! ROFL!
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Old 08-03-2010, 08:43 PM   #26
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What is the capacity on the crane? Some don't lift all that much really. I woud be very careful trying something like that. I think the worse case scenario jeep wise is you damage the bumper. That is if you don't pull the crane out of the rafters on top of you. Maybe some of them rhino ramps would be the best bet for getting under there a bit better. I have a manual low rise lift that I use and it works great. Good luck.

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