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Old 05-08-2016, 10:18 PM   #1
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New Seismic Wave Brakes Weak

Just purchased a Seismic Wave 355W and the braking seems weak to me. TV is a 2013 Ford and when I slide the brake control to all on, I can feel some grab but not much. Feels like light braking.

My previous toyhaulers would lock up the trailer brakes or at least brake hard.
Any ideas what might be the issue?

I plan on taking it in for some warranty work and will bring this up along with a few other small issues I have found.
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Old 05-08-2016, 10:43 PM   #2
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Quote:
Originally Posted by Turtle Tim View Post
Just purchased a Seismic Wave 355W and the braking seems weak to me. TV is a 2013 Ford and when I slide the brake control to all on, I can feel some grab but not much. Feels like light braking.

My previous toyhaulers would lock up the trailer brakes or at least brake hard.
Any ideas what might be the issue?

I plan on taking it in for some warranty work and will bring this up along with a few other small issues I have found.
If this is a brand new trailer, it will take some driving (and braking, of course) for the trailer brakes to 'seat.' I believe it was mentioned somewhere in the owners manual. I know it was true for our trailer and it has been mentioned from time to time in this forum.
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Old 05-08-2016, 11:08 PM   #3
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I read that in the manual too. Any idea how many miles, or better yet, how much braking needed to seat new brakes?
I bought this 2300 miles away and drove back on the Interstate with minimal braking, and just got back from a weekend camping trip (first outing) of about 100 miles of winding roads with plenty of average braking and no noticeable improvement.
I have had 2 other toyhaulers, but this is the heaviest and maybe I'm expecting too much?
Don't want to have to brake hard and feel like the tail is wagging the dog!
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Old 05-09-2016, 05:41 AM   #4
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I'd check the wiring on the axles to be sure no connections are loose. You may only be braking with one.
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Old 05-09-2016, 06:15 PM   #5
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I had dealer check brakes and hubs prior to taking my 2016 out for first time this season. Purchased last year. It was $ out of pocket but for me, I will do it every year for maintenance. When it comes to these big rigs, I mitigate all risk as much as possible for towing. That's just me though. I'm a federal safety inspector for a transportation agency, Maybe it's just the way I'm programmed.
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Old 05-09-2016, 08:26 PM   #6
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I agree on good maintenance. Don't ever want to break down along the road.

I will check the wiring. I crawled underneath the entire unit during the PDI and found a couple items that needed addressed, but at first glance, the brake wiring looked ok. Maybe I need to do a more thorough inspection, hook up the TV and use my meter to check. Good suggestion.
How much grab should I be feeling with this larger hauler?
My last hauler was 32' and I could nearly lock up the wheels, they grabbed hard.
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Old 05-09-2016, 08:58 PM   #7
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If I recall, you can check the brake continuity by using a meter, if your savvy, by applying full brake control and measuring the current draw. Jayco or dealer should be able to tell you about what it should be for 6 brakes fully applied. Whether or not they do, another story. Talk to your dealer they may create a warranty ticket for it based on how you describe your concern. Let us know how you make out and congrats on your 355. That's a nice unit.
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Old 05-09-2016, 09:01 PM   #8
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I'm jealous of that 355. I want that model myself.

As for brakes, no matter how big the unit, the brakes should be able strong enough to lock up. You certainly have an issue somewhere.
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Old 05-10-2016, 05:09 PM   #9
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I've been running through the weak brake mill for a while now. Never could LOCK them. Towed at full power (10) with my Ford IBC. Still had weak brakes.
Dealer went crazy trying to make me happy. They had confirmation from Lippert to replace all brake components, until the service manager at my dealership had me come in on a Sunday for a final brake "shakedown".
He didn't like how the cord kept pulling out of his truck (because it is a little too short) so he jammed his truck key into the cord plug end, to make the contacts tighter.
Guess what...now I set my brake controller at 7.5 because the connection is tighter.

Long story short.. Try squeezing the brake tabs in the cord end tighter before you drive to the dealer.
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Old 05-18-2016, 09:49 PM   #10
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Ok, picked the trailer up from storage today to get ready for a trip this weekend. Squeezed the tabs on the trailer plug as suggested and no dice.
Crawled underneath and had the wife apply the brakes using the brake controller. I could hear the brakes work on both axels. I checked voltage and had 10.7 volts at the axels. Checked at the plug, and it was 13.6 volts at the plug.
So, is the loss of 2.9 volts enough to cause the weak braking?
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