Anyone elses truck rock?
#11
Senior Member
Thread Starter
Have Sumo springs and Bilstien 5100's, and the truck barely drops with the small trailer on. Bringing the truck in to service on Thursday to have the front end checked.
How is it possible to have the truck move once the parking brake is engaged? Trying to hook up either of my trailer, I get the ball under the socket, put in neutral, set the brake and release the service brakes and the truck rolls. I never had that happen with the 14, in fact if I dont use the parking brake the truck will roll back almost 2 inches. So much slop in the drive train.
How is it possible to have the truck move once the parking brake is engaged? Trying to hook up either of my trailer, I get the ball under the socket, put in neutral, set the brake and release the service brakes and the truck rolls. I never had that happen with the 14, in fact if I dont use the parking brake the truck will roll back almost 2 inches. So much slop in the drive train.
#12
5.0 DOHC V8
Join Date: Apr 2017
Location: The southern California sardine can
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How is it possible to have the truck move once the parking brake is engaged?
Remember, the leaf spring pack is softer than in years past to accommodate a modern ride quality standard, and possibly as well as the lighter weight aluminum body and bed... which is one reason you went with the Sumos to aid your towing efforts.
I'm looking at Roadmaster for my truck.
#13
Senior Member
Rear suspension leaf wrap. In other words, the long leaves are still flexing.
Remember, the leaf spring pack is softer than in years past to accommodate a modern ride quality standard, and possibly as well as the lighter weight aluminum body and bed... which is one reason you went with the Sumos to aid your towing efforts.
I'm looking at Roadmaster for my truck.
Remember, the leaf spring pack is softer than in years past to accommodate a modern ride quality standard, and possibly as well as the lighter weight aluminum body and bed... which is one reason you went with the Sumos to aid your towing efforts.
I'm looking at Roadmaster for my truck.
#14
Blunt
Your truck shouldn't rock when stopping... Have you tried changing the trailer brake gain?
As for the truck rolling with the park brake, that shouldn't happen! I do exactly what you said (neutral, park brake) when hooking up. My truck doesn't roll at all when I take my foot off the brake, and my driveway is sloped.
As for the truck rolling with the park brake, that shouldn't happen! I do exactly what you said (neutral, park brake) when hooking up. My truck doesn't roll at all when I take my foot off the brake, and my driveway is sloped.
#15
5.0 DOHC V8
Join Date: Apr 2017
Location: The southern California sardine can
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First off I would like to say I am no engineer but with the Sumo springs or the active suspension I wonder long term how that is going to effect the springs...
The Roadmaster doesn't stress the leaf spring pack, it assists it by holding through more of it's travel to it's designed semi-elliptical shape. Granted, the front half (axle forward) of the spring pack is not assisted, but does it need to be? If the lack of assist forward of the axle is at all a determining factor in the overall service life of the leaf spring assembly as a whole, I would think it is so small as to not be a concern.
#16
Senior Member
Thread Starter
Your truck shouldn't rock when stopping... Have you tried changing the trailer brake gain?
As for the truck rolling with the park brake, that shouldn't happen! I do exactly what you said (neutral, park brake) when hooking up. My truck doesn't roll at all when I take my foot off the brake, and my driveway is sloped.
As for the truck rolling with the park brake, that shouldn't happen! I do exactly what you said (neutral, park brake) when hooking up. My truck doesn't roll at all when I take my foot off the brake, and my driveway is sloped.
Trailer doesn't have brakes, its a 2500# GVWR enclosed cargo trailer with a single axle.
The Sumo springs aren't touching the axle when empty, which is the majority of my drive, and really don't do much of anything until there is a load back there. What I do notice is when I come to a stop and the front end dips, raising the rear, when the rear comes down it will bounce a couple times from the Sumo's.
That being said, the truck did the fore/aft roll prior to adding the Sumo's, so they aren't the cause.
I take it in on Thursday to have the front checked and also mentioned the extra rolling when stopping with the trailer along with the truck rolling after applying the brake.
#18
Senior Member
Thread Starter
Not much mass to it.
There is a large AGM battery up front as well. When I first got the trailer, i could sit on the tail and raise the nose, but not anymore.
There is a large AGM battery up front as well. When I first got the trailer, i could sit on the tail and raise the nose, but not anymore.
#19
Have Sumo springs and Bilstien 5100's, and the truck barely drops with the small trailer on. Bringing the truck in to service on Thursday to have the front end checked.
How is it possible to have the truck move once the parking brake is engaged? Trying to hook up either of my trailer, I get the ball under the socket, put in neutral, set the brake and release the service brakes and the truck rolls. I never had that happen with the 14, in fact if I dont use the parking brake the truck will roll back almost 2 inches. So much slop in the drive train.
How is it possible to have the truck move once the parking brake is engaged? Trying to hook up either of my trailer, I get the ball under the socket, put in neutral, set the brake and release the service brakes and the truck rolls. I never had that happen with the 14, in fact if I dont use the parking brake the truck will roll back almost 2 inches. So much slop in the drive train.
#20
Senior Member
Thread Starter
I notice this truck has a LOT more roll than my 14 did. Put it in park and it will roll enough that I need to make sure there is enough clearance between the truck and whatever I park in front of.
Today I was doing some shopping, my dealer sent me a letter saying they will pay 115% of Black book value for my wifes car, so I looked around at 2013-14 F150 and found an FX4 with 7700# GVWR. Where the heck was one of these back in January? Would have snapped it up.
Today I was doing some shopping, my dealer sent me a letter saying they will pay 115% of Black book value for my wifes car, so I looked around at 2013-14 F150 and found an FX4 with 7700# GVWR. Where the heck was one of these back in January? Would have snapped it up.