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Open Roads Forum  >  Fifth-Wheels

 > Lippert shock absorber replacement options

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Cummins12V98

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Posted: 12/02/19 11:32am Link  |  Quote  |  Print  |  Notify Moderator

ivbinconned wrote:

Ok Cummins about to install the number on the old is 122108.
The Munroe number 5550001 seems to be about 1/2 inch longer compressed.
Might this be a problem?


Monroe has a chart showing connection types and compressed/extended lengths. I doubt it would matter but check specs to be sure.


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ivbinconned

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Posted: 12/02/19 12:16pm Link  |  Quote  |  Print  |  Notify Moderator

Did you see my second post?


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sayoung

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Posted: 12/02/19 12:36pm Link  |  Quote  |  Print  |  Notify Moderator

I used a Monroe 555025.

ivbinconned

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Posted: 12/02/19 12:48pm Link  |  Quote  |  Print  |  Notify Moderator

How did you arrive at that? Was your original a 122108?

ivbinconned

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Posted: 12/02/19 01:24pm Link  |  Quote  |  Print  |  Notify Moderator

That shock would be even longer.
I phoned Monroe. The 555001 has 4 inches of play.
With new springs installed about 10,000 miles ago (and I added an extra leaf)
Now with the suspension bearing the weight of the trailer there is only about 3/4 inch of compression left!!
This can not be good. I phone Monroe. They tell me they like to see 60% possible compression left !!

ivbinconned

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Posted: 12/02/19 02:17pm Link  |  Quote  |  Print  |  Notify Moderator

My Conclusion is this. Not enough distance was provided by brackets for original shocks. There for I am welding a new bracket on old one to add travel for the new shocks.
All original shocks show damage from collapsing to 0 plus.
Very poor quality work by manufacture.

ivbinconned

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Posted: 12/03/19 08:53am Link  |  Quote  |  Print  |  Notify Moderator

In fact drivers side rear the shock was with in 1/4 inch of full compression.
Shock absorber in looks only.

ivbinconned

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Posted: 12/03/19 09:05am Link  |  Quote  |  Print  |  Notify Moderator

So in effect the shock has acted as a limit to how high the axel can react to a bump up.

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Posted: 12/03/19 12:23pm Link  |  Quote  |  Print  |  Notify Moderator

ivbinconned wrote:

How did you arrive at that? Was your original a 122108?

Tape measure. No OEM shocks just brackets . My axles are under Springs.

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