Font axle mount bushing parts ebay - Jeep Commander Forums: Jeep Commander Forum
Suspension / Lifts This is the place to discuss the suspension, lift systems, and other stuff underneath your Jeep Commander

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post #1 of 32 (permalink) Old 02-16-2017, 05:53 PM Thread Starter
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Font axle mount bushing parts ebay

Is this what we need to reolace the bushing clunK?

New Front Differential Mount Set for Jeep Commander Grand Cherokee 52089516AB | eBay
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post #2 of 32 (permalink) Old 02-16-2017, 07:21 PM
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Yep. That's it. Or you can check out Jeeperf's site and get some SERIOUS polyurethane ones. Maybe we can talk him into a group buy....hmmmmmmm......
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post #3 of 32 (permalink) Old 02-16-2017, 11:07 PM Thread Starter
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Link to his site please
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post #4 of 32 (permalink) Old 02-17-2017, 01:05 AM
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Link to his site please
http://www.jeeperf.com/


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post #5 of 32 (permalink) Old 02-17-2017, 11:10 PM Thread Starter
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I definatly would be using the poly ones. The problem im having is deciding whether to pay to get them replaced or tackle them myself. Its more than I want to do on my own and its more than I want to spend if I pay a shop lol.
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post #6 of 32 (permalink) Old 02-18-2017, 12:06 PM
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Originally Posted by Tahiti Steve View Post
I definatly would be using the poly ones. The problem im having is deciding whether to pay to get them replaced or tackle them myself. Its more than I want to do on my own and its more than I want to spend if I pay a shop lol.
Well just a couple weeks ago I had the dealer replace mine (under lifetime powertrain warrantee) and it took them 2 days. The front differential has to be removed and what that entails I don't know. My commander was from Detroit as a lease and then me in Ohio for 5 years so the rust was fun for the mechanic. I would take it to a local mechanic instead of dealer and it may not be very expensive.

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post #7 of 32 (permalink) Old 03-01-2017, 08:59 PM Thread Starter
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So I went ahead and ordered the poly bushing kit for the front differential from Jeep Performance. They better be worth it for the money I paid to get them to Canada...exchange and shipping costs. My mechanic said the Chrysler kit will maybe only last 5 years so i can only assume that these will last longer.
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post #8 of 32 (permalink) Old 03-02-2017, 08:18 AM
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Be careful ordering parts off of eBay, some or just really poor quality. Having said that, this particular auction states they are "Crown" brand, which is know to be quality stuff, so if they seller has a good rating and is being honest in the brand of parts he's offering that might be a good deal.

I have not done the bushing replacement. It does require dropping the front axle which means removing the CV shafts, which means dissembling the suspension quite a bit to do it. But a professional should be able to do it in a day.

The problem is removing the two pressed in bushings, they are a bear to get out and most common tools just won't fit to press them out. There are some youtube videos of folks doing the job, remember the job is exactly the same for the same years Grand Cherokee's, and the fastest way seems to be using an air chisel to chisel the old bushing sleeves out of the axle.
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post #9 of 32 (permalink) Old 03-02-2017, 08:27 AM
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Quote:
Originally Posted by RickTheMick View Post
Yep. That's it. Or you can check out Jeeperf's site and get some SERIOUS polyurethane ones. Maybe we can talk him into a group buy....hmmmmmmm......
The Polyurethane versions removes the voids in the bushings, the primary reason the OEM bushings wear out and tear, but also the reason why they provide smoothness and damping.

So logically, the solid poly bushing would last much longer, i.e. you won't have to do the job another time.

But, how do they feel with NVH and smoothness on the driveline? Anyone with some experience can comment?

I have seen plenty of warnings of poly bushings increasing the NVH/Harshness/Roughness and some do and some don't when I've tried them. I guess most do, but its a matter of degree, and some I've found its hardly noticeable and some almost all the time you can't tell a difference at all.

Other problem, they are expensive, compared to if you bargain shop a good quality brand that is direct replacement.
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post #10 of 32 (permalink) Old 03-02-2017, 03:13 PM
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Quote:
Originally Posted by Mongo View Post
The Polyurethane versions removes the voids in the bushings, the primary reason the OEM bushings wear out and tear, but also the reason why they provide smoothness and damping.

So logically, the solid poly bushing would last much longer, i.e. you won't have to do the job another time.

But, how do they feel with NVH and smoothness on the driveline? Anyone with some experience can comment?

I have seen plenty of warnings of poly bushings increasing the NVH/Harshness/Roughness and some do and some don't when I've tried them. I guess most do, but its a matter of degree, and some I've found its hardly noticeable and some almost all the time you can't tell a difference at all.

Other problem, they are expensive, compared to if you bargain shop a good quality brand that is direct replacement.
polyurethane comes in varying durometer ratings, plus yes, the voids in the oem design help quite a bit to dampen the transfer of sound and harshness as well. I have read comments regarding poly diff mounts in the past on jeepforum saying that while it may be a slightly noticable difference, it isn't a horrendous difference. IMHO it really depends on how long you plan to own the vehicle, and whether you'd like to save a few bucks now with an OEM style or spend twice as much time or labor cost having them installed more than once.
Quote:
A durometer scale is a type of measurement for rubber material hardness. The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application. Generally, most rubber materials fall under the rubber durometer scale of Shore A. Thus, if you need a rubber or O-ring durometer that feels like a running shoe sole, review our rubber hardness chart below, then pick Shore 70A. A rubber durometer of Shore 70A is the most commonly chosen material hardness for all applications.

a. Shore 20A = Rubber Band
b. Shore 40A = Pencil Eraser
c. Shore 60A = Car Tire Tread
d. Shore 70A* = Running Shoe Sole
e. Shore 80A = Leather Belt
f. Shore 100A = Shopping Cart Wheel
EDIT: of course it was Omelet's build thread that I read about this first... that guy has done everything:

Quote:
Originally Posted by Omelet View Post
Well great news! My front pinion bushing was starting to fail again..........yippy :brickwall So this time I hit up Wally at JeePerf for a set of his 05-10 Jeep WK/XK Poly Differential Bushing. Then it was time to get to work.




I grabbed a pneumatic chisel thinking that was going to make the job easier. FYI it really didn't. I found the easiest way to get the old bushings out was to use a sawzall and cut the center out, then cut a slit in the outer collar. At that point the collar will just pop out with minimal force. Here's what my first one looked like after using the chisel.






Yes that sucked! But once I popped the new one in it was worth it.






Then it was on to the next bushing which was much easier since I gave up on the chisel and grabbed the sawzal.











Now that I have been driving around with them for a while I can say they do increase road noise a little, but not too much. Just knowing I will never have to replace them again definitely makes the slight increase worth it though! The added noise sounds more like a bearing going out than anything else. So maybe I'm only hearing something starting to fail. I guess we'll see soon enough out:

Last edited by luckyse7ens; 03-02-2017 at 03:50 PM.
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