Thrust Plate Alignment - Specialty Products Company

[@paulovictordsantos]

it is the best video about rear alignment on youtube!!!

[@SPCAlignment]

Thank you so much.

[@abhishekganeshan8855]

i have doudt that ,you are putting plate on one side of axle what about other side.. ??? if u r not putting plate on other side there should b misalignment again??

[@tonymai1844]

thrust angle needs only side to be moving to be changed. so you do one side and that will bring thrust angle back to 0 degree. if other side got hit, got damaged you remove the plate and re-adjust again after the damaged got repaired.

[@victoranderson8606]

I have a hummer h3 I notice the passenger side rear tire is back further than the driver side. The vehicle seems to be running sideways. What could cause this? I'm I endanger of having a accident if I continue to drive?

[@mynameisjehff2178]

How about side to side from left to right? My truck has, as you look from the rear, the rear axle shifted just an inch to the right and the right tire is sticking out of the wheel well more than the left. Thank you for your time.

[@SPCAlignment]

It sounds like you have axle sideset. You may have bent springs or a frame problem. A good body shop that can measure vehicle dimensions would be advised.

[@chrisventris6650]

U ever figure out what was wrong with ur truck my truck doing the same

[@abhishekganeshan8855]

hey.. can u explain me whole process that how align axle with respect to front axle i.e to achieve zero thrust angle. i want to achive zero thrust angle in low commericial vehicles like small trucks n bus

[@SPCAlignment]

You'd probably get the best answer by calling one of our techs. You can reach them by calling our toll free number 1-800-525-6505. They are available M-F 8am-5pm Mountain Standard Time.

[@ROCKSTAR9808]

My truck has 20* of thrust angle. Does that mean i have to pull the right side front?

[@SPCAlignment]

I am assuming the measurement is .20 degree of thrust. It depends if the thrust is positive or negative to determine which way the vehicle may pull. .20 degree is minimal and normally should not cause much of a problem.

[@mrbimbo3917]

My f150 2018 now has a thrust of 0.51 it shifted when it was at -0.1 i tried moving the axle but couldnt because theres a small plate with the leaf spring bolts that hold them together and u rings go around it and cant move forward or backwars ig

[@SPCAlignment]

Sorry the thrust plates illustrated in this video will not fit the 2004-2020 Ford F-150 because of the 2 pin design.

[@mrbimbo3917]

@@SPCAlignment oh ok, can i still move the axle somehow?

[@SPCAlignment]

@@mrbimbo3917 Without fabricating custom parts, you can loosen all the U-bolts and try to take advantage of manufacturing tolerances by pulling one side forward while pulling the other side back. Once the tolerances are removed in opposite directions, tighten all the U-bolts.

[@Mrjack-yn2dj]

Will this be able to remove -2 degrees of thrust angle?

[@specialtyproductscompanysp8027]

Mr. Jack, Probably not. For an axle with 50" of spring separation, it takes about 1-3/4" of motion on one side to make up for 2°. You can't move the axle under the spring that much. There must be something pretty well bent or broken under the truck. Has the centering bolt of the springs sheared allowing the axle to pivot? Some springs do not have the hole in the direct center of the spring. Is one of the springs mounted backwards? Are the spring brackets or the frame visually distorted? Is the frame "diamond" shaped? Almost 2" of deflection should be visible. We don't want to Band-Aid the issue but rather fix it. Do you have an alignment report with wheelbase and setback information? Most modern aligners collect this information during an alignment; they just need to be searched for. This information can be very useful. If you are in the US, please feel free to call me at 800-525-6505. Thanks, Tom

[@Mrjack-yn2dj]

@specialtyproductscompanysp8027 Unfortunately, the vehicle was hit on the side, and I went and did the alignment, and it was about 2 degrees off

[@specialtyproductscompanysp8027]

Mr. Jack, Unless the springs shifted on the axle, it sounds like the truck may have frame distortion. Having wheelbase and setback info would be useful.

[@nickcrane8329]

Would this work between rear blocks from a lift kit. I have a 2006 Silverado 1500 and I installed a rough country 4.5 lift kit and I'm having a problem with the thrust angle now

[@SPCAlignment]

If you have a single spring locating pin which I think you do put it under the spring. Make sure the thrust angle problem is not axle sideset.

[@adriantrejo6696]

Did you ever figure out what the problem was?

[@nickcrane8329]

@@adriantrejo6696 Turns out I had the blocks facing the wrong way. Assumed they were flat and didn't need to be oriented with the peak of the slope towards the rear of the truck. I guess that's what happens when you drink too many beers while installing a lift kit outside in the middle of the summer in Phoenix, AZ lol

[@mercury591]

I have a positive thrust angle of .23* oem specs are -.15* to .15*. Would this cause the Jeep to drift in its lane? Also can this thrust alignment plate be used if the vehicle has axle shims installed?

[@SPCAlignment]

Positive thrust angle will push the rear of the Jeep to the right, which should cause the Jeep to drift to the left (like steering a forklift.) This should be a steady drift unless the U-bolts are not tight and the axle shifts around. Your readings are at the marginal point. It would probably drive better with less thrust. The SPC thrust plates can be used with axle wedges IF the locating pins still locate. Sometimes replacement spring center bolts have taller bolt heads than the OE ones if needed. You can't rely on just the U-bolts if the locating pins don't make contact. On the other hand, a little positive thrust might counteract road crown. At least the thrust angle is in the potentially "right" direction. (Unless you are in a country with left-hand driving!)

[@mercury591]

Okay so I live in the USA with left hand steering therefore positive thrust angle would make It more difficult with road crown? My leaf spring center pins do have a metal sleeve to help the center pins protrude into the axle perch more. However the metal sleeve can easily be removed if I take the center pin out of the leaf and remove the sleeve from the pin. If the head is still too long I could always grind It a little so that It doesn’t prevent adjustment of the plate or not allow the plates to fully seat in each other. Does this all sound correct?

[@mercury591]

Oh I see what you’re saying now with forklift like steering, positive thrust would help on a right-hand lane road like the USA. I misunderstood and thought you meant if my Jeep was right hand steering.

[@SPCAlignment]

@@mercury591 Correct. It is better to a have positive thrust angle in the USA than negative thrust. I can think of at least one application where the factory INTENTIONALLY adds positive thrust in the rear to counteract an intrinsic drifting issue. Again, as long as there is good locating all the way through the wedge and plate to both the axle pad and the spring, you'll be OK.

[@n1ckga7cia]

Does the kit affect rear ride height? One side taller than the other?

[@SPCAlignment]

The thrust plate will change ride height by about 1/2". Since it only needs to be installed on one side check ride height first and install it on the appropriate side. If the leaf spring is on top of the axle it will raise ride height on that side. If the leaf spring is located under the axle housing it will lower on that side.

[@mikeswanson88]

If it causes one side to be higher after install you can always put a piece of plate steel (with a.hole drilled into it) on the other side to level it out

[@aux1z11]

Why would I want to do this when i just can use the pin and hole as it comes from the factory

[@SPCAlignment]

The rear spring pin and hole are in a fixed position. This kit allows the axle to shift forward or rearward to align the thrust angle to the vehicle centerline.

[@EdBert]

Take your factory vehicle in and checked with lasers. If it is more than 10 years old odds are good your thrust-angle is off. This allows it to be put where it belongs.

[@ClayAutery]

@@EdBert Mine actually came from the factory with a 15/16" fore/aft location difference from side-to-side. Had I known these kits existed, I would have fixed it many years ago.

[@hadtocheathimtobeathim6549]

@@SPCAlignmentwhy couldn

[@joshsutcliffe6099]

Would this work on 01 Silverado?

[@SPCAlignment]

Yes. Please measure the width of the rear leaf springs. If 2 3/8" to 2 3/4" wide then part # 63020 is correct. If 3" to 3 5/8", then 63030. You only need one kit per truck to be installed on the lower ride height side. Please call 1-800-525-6505 with any questions.

[@joshsutcliffe6099]

@@SPCAlignment would it allow me to adjust it forward or back? I need to bring the driver side forward about 2 inches

[@SPCAlignment]

That seems like a LOT. What is your thrust angle? Is the rear toe equal but opposite sign? Is the center pin through the spring sheared? Accident damage? To answer your question, 2" is about the farthest this kit should be used.

[@adamlotte7138]

why not just grind off the locating pin entirely and shift the axle into proper alignment without this kit? what's the difference?

[@thearcher1740]

huh? if you grind off the locating pin on the leaf spring, how is the leaf spring going to be attached to the axle? The axle-to -leaf-spring combo is held together both by the compression forces provided by the U bolts as well as the static force provided by the male-female pin-hole. What this kit does so provide a way to "offset" the holes.

[@SPCAlignment]

The U-bolt clamps are not designed to hold the axle in place by themselves. Over time with torque and twisting the axle can shift or slide creating more problems.

[@hadtocheathimtobeathim6549]

@@thearcher1740how does this kit locate the rear end to the spring when the locating pin is ground down to not protrude into the the lower plate and the lower pin doesn’t protrude into the upper plate? There is no locating pin essentially anymore even with this kit.

[@hadtocheathimtobeathim6549]

@@thearcher1740there’s no offset hole. The top affixes to the rear end and the bottom affixes to the spring. Then the 2 plates just slide on each other. The only thing holding the rear end to the spring at this point is the u bolts. I too want to know why a person couldn’t just slot the rear end saddle, move the rear end and then tighten the u bolts.

[@traxxastmaxx2.5r75]

I’m pissed...I just had a 300 dollar install and alignment of camber bolts on the front and my ranger still dog walks...I’m assuming it’s this now...I’m jus pissed beyond return and need a vehicle god to save me...I hate rangers beyond imagination like how tf did ford make these so bad

[@SPCAlignment]

Do you have an alignment report? If yes, what is the thrust angle? Most trucks have a wider front track than rear so there can be some optical illusion going on. The thrust angle is what's important. Please call me at 1-800-525-6505 for more discussion. Thanks, Tom

[@traxxastmaxx2.5r75]

SPCAlignment I’m not mad at u lol I’m mad at les schwab because I told them to align it and 300 dollars later they said my tuck was good...I had someone follow me down the road and it looked like it was trying to go left and had to steer slightly left...it’s my rear axle I think because it sits to the right slightly but I figured les schwab woulda helped me out

[@traxxastmaxx2.5r75]

Had to steer slightly right not left

[@traxxastmaxx2.5r75]

SPCAlignment also my truck is a ranger and it seems like it’s way to common for these damn trucks

[@SPCAlignment]

No worries! I would like to have some info from an alignment report. Please call me at 1-800-525-6505. Tom