Replacing/Upgrading The Suspension On A 2007 Colorado Tandem Axle 5th Wheel With LRE Suspension

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Question:

I have a 2007 Colorado 32’ 5th wheel I want to upgrade the suspension. I believe it has the LRE suspension with rubber shear springs. My research shows I should get the MR79ZR and the MR79UR shear springs. I would also like to replace the leaf springs with the e34SR 5 leaf When I measured leaf springs they were 26” center of hole to hole while on the trailer .there are 4 leafs on springs I’m not sure if these are the correct parts I should order any help would be appreciated Thank you

asked by: David W

1

Helpful Expert Reply:

It sounds like you are definitely on the right track here. The # MR79ZR is indeed the correct suspension upgrade kit for your 2007 Colorado 5th wheel with LRE suspension. Moryde makes a fantastic suspension upgrade kit. The heavy duty shackles and wet bolts are highly durable and will last a very long time as long as you keep them properly greased. The shear spring # MR79UR is also correct for this setup.

The leaf springs might be a bit more tricky, since you are measuring them under a load. Leaf springs can extend up to 1" when flexed. So it certainly stands to reason that the # e34SR will be sized just right. In a perfect world, we would have you jack the trailer up and measure the spring without a load to get a more accurate measurement. That said, I believe it is safe to say that the # e34SR will fit nicely. This spring is a 5 leaf instead of a 4 leaf, but that will not be an issue at all. The spring will be 3/8" thicker, and it looks like your u-bolts will be plenty long to accommodate this. We do offer new u bolts # CE23003, if you would like to replace them while you're at it.

expert reply by: Jesse M

1

suspension pic 1
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suspension pic 2
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suspension pic 3
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camper tag
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Answer 1

All of the brake hoses, including the main brake line, are made of rubber on the 20 foot Kodiak Hydraulic Brake Line Kit - Tandem Axle #20TA-BLKIT. The hoses on the #20TA-BLKIT also have brass fittings with stainless steel flares.

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Answer 2

The only difference between a 4 leaf spring and a 5 leaf spring like the #e34SR is that the 4 leaf spring will use slightly thicker leaves and is 1/8 of an inch shorter. To get the best measurement of your existing springs, measure the center eye…

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Answer 3

The replacement leaf spring that I have available to fit your 6,000 pound axle is the 5-Leaf Double-Eye Spring, #e34SR. This spring measures 25-1/4 inches long by 1-3/4 inches wide. In order to ensure proper traction and a safe, level ride, we…

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Answer 4

Thanks so much for the photos they were super helpful. What they show is that you have the MORryde LRE suspension with the shear spring, and the part number you mentioned confirmed that as well. We do have the correct upgrade kit for your camper,…

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Answer 5

Based on the GVWR I was able to find for your 2009 Montana 3000RK and the axle capacity that would be needed for that the correct MORryde sheer spring you'd need would be the part #MR79UR which is correct for axle ratings between 6,501 and 7,500…

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Answer 6

Yes, both special trailer (ST) and light truck (LT) tires can be used on a 5th wheel trailer. They are actually the only two types of tires rated for this use. The reason for this is that tires on a trailer will be subjected to much harsher…

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Answer 7

The end plates on the MORryde X-Factor Crossmember for LRE, RE, or TRE Leaf Spring Suspension #MR99ZR measure 4" x 8". The mounting holes line up with the LRE, RE, and TRE brackets. See the dimensional drawing below.

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Answer 8

The Dexter Axle, #8327834, uses a 2.25 ID grease seal. This is the case for pretty much all 7K axles out there. You typically see the 2.125 ID seals with 5K to 5.2K axles. If you ever need to replace your hubs in the future, we have the Dexter 7K Hub…

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Answer 9

So it sounds like it is the "passenger's" side of the trailer which would be the right side. That would mean rear leg #LC344792 is the correct replacement for you.

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Answer 10

Yes it does, what you will need are 1/2"-20 self-tapping bolts in order to install the bracket you asked about: - Replacement I-Beam Jack Bracket for Lippert Ground Control 3.0 #LC349975

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Answer 11

If your Jayco Pinnacle was equipped with the Lippert Hydraulic Ground Control Leveling System (which should be listed on the control panel), then yes the #LC324269 you'd looked at would be the correct replacement foot pad. If you're unsure of…

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Answer 12

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Replacing/Upgrading The Suspension On A 2007 Colorado Tandem Axle 5th Wheel With LRE Suspension

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