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Topic: Shock ing news...  (Read 1944 times) previous topic - next topic

Re: Shock ing news...

Reply #25
I would not use a 3/4" torque wrench as a breaker bar. Use a good quality 3/4" breaker bar and a long pipe.
Otherwise if you have a adequate sized air compressor you could buy the cheaper 3/4" air impact from Harbor Freight, It should be able to spin the nut loose, you might even be able to return it or keep it as it works great for wheel removal and other HD bolt wrangling.
HF also makes a high output 1/2" electric impact that has over 1200# of nut busting power, for less than $85.
1995 U320C SE 40'
Jeep 4x4 Commander - Limited - Hemi
"The Pack"  Yogi and Diesel our Airedales -  Charlie our Boxer/Akita mix. Gone but NEVER forgotten Jake our yellow Lab.
NRA Law Enforcement Firearms instructor - Handgun/shotgun
Regional Firearms instructor for national Armored Transp. Co.

Re: Shock ing news...

Reply #26
I'm surprised that yours are worse than mine: Rear Shock Replacement -- DIY w/ 1 person

Mine's a 1997 with original shocks on the front part of the rear axle.

I used a 4' length of iron pipe on an 18" long 1/2" drive breaker bar with impact extensions to get back to the shock bolts.  Even with impact extensions, they torqued enough that the breaker bar depressed about 8-12" before the nuts broke.  They broke with a bang that sounded like I broke something.  It was pretty impressive.  Nothing broken -- they were on tight.

I _did_ spray penetrating oil beginning several weeks before the job.  Maybe that was the difference?

Don't get me wrong -- I love the fancy tools, I just didn't need them.  Maybe I was lucky.  I guess we'll see when I attack the front shocks.
Rick and Donna
1997 U320 4000 WTBI Build 5152 "Molesley"

Re: Shock ing news...

Reply #27
Lon,

I have both HF 1/2" 110V impacts and while they are good for some things, the $89 gun does not come anywhere close to the advertised 1050# torque. Perhaps one of their battery impacts might to the trick. I do have their 1" air impact and with a squirt of tool oil and a short 1/2" ID hose, it does a good job. But it's really heavy.

For lug nuts, the torque multiplier requires almost no effort to remove the nuts other than putting it in place as it's fairly heavy.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Shock ing news...

Reply #28
My HF Earthquake XT is pretty impressive and I bought it specifically to remove the shock nuts (it didn't even grunt).  I also use to remove the lug nuts and more recently to tighten 12" x 1/2" lag bolts for the bridge I'm building.  I can't guarantee that it will work, but would be surprised if it didn't.  Sounds to me like you have a good excuse to get one.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Shock ing news...

Reply #29
So yesterday I drove one and a half hours into town to get the harbor freight earthquake 3/4-in drive impact. By the time I got back it was kind of late and I was tired so I decided to wait until today to try it. It broke the nut loose no problem. So I was able to complete the driver side shocks I put the fender back on and went over to the passenger side. It broke the bottom not loose no problem on the forward shock but I could not get it to break the top nut loose. I hit it with some more PB blaster and then got out my 48-in pipe that I bought at Lowe's yesterday for $35 slipped it over the breaker bar and while I thought I heard something break it didn't so then I went over and got David and had him push down on it while I held the center even with the rotation of the pole and while it seemed like it broke it didn't. So more penetrating oil and I came in to hydrate cuz working out in the desert here can make you dehydrated fast even though it's not very warm out the air is very dry. Going to go out and try it again with the impact driver that I bought from harbor freight.
There's really no place on some of these nuts to apply heat because the airbags are right next to them and there's tubing that would not like to get hit with a torch. yeah I might be able to hit the backside of the night but still it's too close to air tubing that would definitely be damaged quickly with heat. I may try to tap it a few times with my 3 lb Hammer though. But appreciate all the suggestions. Also there's really no room to cut the nut off. And I couldn't find a nutcracker for 1 1/8 inch bolt at Lowe's or harbor freight. So I think it's just going to take time. I don't think there's any way I could get these off with a half inch drive set I just there's too much torque on these bolts. The three quarter inch drive is straining at times. Since I don't own a one inch drive and wouldn't want to be hauling that thing around I have no idea on that one but I'm sure it would make it much easier so if you have that kind of tool that's great I just don't have that.
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired

Re: Shock ing news...

Reply #30
That 3/4 will do it Bob just let it simmer some more in the oil. You got on the run now.
Dub McBride 1996 270

Re: Shock ing news...

Reply #31
Assuming your 3/4" Earthquake XT is an air impact. I took a stainless aircraft accumulator tank and welded on a fitting for the large diameter hose. I bring the coach/shop air to it with the regular hose and then plug in the 25 foot large diameter hose for my big impact. A propane tank will do the same thing but easier as it has the threaded openings out of the box and all you need is the right adapters. Out of date bottles are usually free online.

Propane bottles are rated for 960 psi so no problem with 120 psi. I give the gun a few drops of air tool oil and then go for it.

Friction loss is the problem for small and long air hoses. The static pressure might be 125 psi but when you push the trigger, the pressure drops like a rock. The big tank will keep the pressure higher for the few seconds it takes to loosen the nut.

Now that I have the torque multiplier, the tank stays home.

Here are the photos.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Shock ing news...

Reply #32
Im just finished my Airbag and FSD shock replacement...had the same issue trying to loosen the big nut ...bought the 3/4" Earthquake XT 20V and ratta tata taaa...kept hitting and they broke loose.

Keep at it..!
Hans & Marjet
1995 U300 "Ben" (#4719)
3176B Cat,4060HD,Jake
SKP#139131
Motorcade#17579
2006 Honda Element (towed)

Re: Shock ing news...

Reply #33
All 4 front shocks now replaced. Pb blaster ftw!
Only 1 bolt out of 8 came off easy. Will do rears in Mexico. Thanks for all the suggestions.
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired

Re: Shock ing news...

Reply #34
Think if the torque on the nut is 400 and you set the wrench to 600 it would work fine without damaging the wrench,just my opinion.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Shock ing news...

Reply #35
I'm sure John 44 AKA David is correct however I still don't think it would have taken a nut off without the cheater bar attached to it. And the problem with that is that along with the extension that you need and the one and 1/8 inch ratchet socket when you add the cheater bar you're not going to be able to center the angle of pull and it's going to be off center. I'm sure there's some terms in geometry that describe this exactly but in practical terms when you try to push down it's going to be crooked and it's going to fall off Time after Time. Unless you have someone to help keep it centered.
The impact gun keeps it centered nicely but it does weight a bit and is LOUD. I waited till past 11 am to use it and finished before 5.
For those that are interested in doing their own shocks know that it's not a huge job if you have the right tools like everything. And I'll second somebody else's advice to start spraying ahead of time each night with PB blaster or a good solvent days before it will make your job much easier. And on my coach taking off the fenders was well worth the effort. Not really sure how it would have gotten to the top bolt without it.
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired

Re: Shock ing news...

Reply #36
Just wondering if all those high torque values are good for the stud?
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: Shock ing news...

Reply #37
Yes, it will damage the fastener. The bolt and nut should match in type (class 5, 8, etc, etc) and the proper torque can be found at the Fastenal site here: https://www.fastenal.com/content/merch_rules/images/fcom/content-library/Torque-Tension%20Reference%20Guide.pdf

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Shock ing news...

Reply #38
I'm pleased to report that on the drive from Salome Arizona to Oregon pipe national monument that the shocks performed admirably. The usual porpoising that I get is eliminated. And the road from Salome to I-10 is a very bouncy road with lots of dips for flash floods to go past. Coming in I had a lot of it, leaving ... None.
I will replace the rears in Mexico over the next 2 months.
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired

 

Re: Shock ing news...

Reply #39
Finished the rears. What a job. Several bolts sized on coming out and had a time getting them off. Finally had to cut one off. But all 8 are in and saved a nice chunk of cash doing them myself.
Twig and I went to a local mom and pop hardware store and I purchased 6 grade 8 bolts, washers and nuts. Also got screws to replace the ones holding on the fenders. All were rusted out and bad. Not stainless. Also found that when the previous owner had the radiator replaced they didn't bother to put in screws... The things you find. That's why you should always do your own work if you can can. I'll post a final when I leave Mexico but that may not be for a month and a half.
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired