Is It Required to Change Install Hardware When Replacing Trailer Leaf Springs

Question

Question:

Hi etrailer! When replacing my leaf springs, should I also be replacing the ubolts and shackle bolts? If so, which would be correct to go with these springs for a 3inch diameter axel 4400lb? Thank you!

asked by: Stephen R

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Expert Reply:

It really just comes down to the condition of the hardware Stephen. It's not one of those things where if you are replacing one thing you HAVE to also replace other things at the same time. If your shackle bolts, etc. are all in good shape then I would just leave them be when you install the springs # e34SR.

expert reply by: Jameson C

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Answer 1

As long as the axle the won't exceed 5,000 lbs the trailer leaf spring #e44SR would work great since it has a 5k capacity. If you need the full capacity of your axles you'd have to move up to a 6k spring with the part #e34SR instead. This…

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Answer 2

I went to the warehouse and checked out the Fan-Tastic Vent Roof Vent w/ 12V Fan, part #FV802250. The fan motor on the vent has a 3-amp draw. This fan is designed to fit roofs that are up to 4-inches thick and the rough opening size you need for this…

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Answer 3

It looks like the WFCO 8935 is a 35 Amp converter, so you're not going to be able to install the Progressive Dynamics #PD9245C because it is rated for 45 amps. Adding a higher amp rating converter to your system could potentially cause…

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Answer 4

To correctly measure a leaf spring, you'll want to jack the trailer up on jack stands so the axle is hanging freely, then measure directly across from the center of one spring eye to the other, as shown in the provided diagram. The height of the…

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Answer 5

Yes, going from a 4 leaf to a 6 leaf spring would add slightly to your ride height. For example, if the current 4 leaf spring has 3/8" thick leaves, and you go to a 6 leaf spring with 3/8" thick leaves, you would be adding 3/4" of…

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Answer 6

Thanks for the picture of your build sheet! It does look like the etrailer 6-Leaf Double-Eye Spring item #e94SR you purchased is the correct replacement spring. Feel free to email me back a picture of your suspension but unless you are flipping your…

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Answer 7

Hey Philip so while we don't carry the exact spring you are looking for it does match the specs of the #e59SR so this would be a great solution. It's correct length at 23-1/8 inches and is for a 3,500 lb trailer axle like you have as well.

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Answer 8

The difference between the two models that you were researching is that the #PD9160A is designed for use with lead acid batteries and the #PD9160ALV is designed for use with lithium batteries. Choosing the incorrect battery profile can lead to issues…

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Answer 9

To change the battery mode on the Progressive Dynamics 9300 Series RV Converter Charger #PD79RR you'll need to insert the included CLAW tool into the small opening next to the battery type indicator light. Press and hold that button (using the…

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Answer 10

The amount of leaves won't make a huge difference on whether they will flatten out or not as what really matters is the capacity of the spring relative to the axle and trailer weight. I would go with at least ta 4,400 lb leaf spring or maybe…

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Answer 11

The number of leaves on a leaf spring does not dictate strength or capacity, so as you said, a 3000lb rated leaf spring (6,000lb axle capacity) can have various numbers of leaves since it is up to how the manufacture designed it. I wouldn't look…

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Answer 12

Yes, the Progressive Dynamics part #PD9260C will work great as a replacement for the Magnetek 900 series model 950 that you have currently.

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Is It Required to Change Install Hardware When Replacing Trailer Leaf Springs

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