Offroad Trailblazers and Envoys

Fixing my steering today...

BDS, ReadyLift, Smaxx... You name it, we know about it here.

by ErikSS » Sun Dec 29, 2013 3:25 pm

My driveshaft place has a 2nd location that does racks. He's going to try to get me better boots to help keep it clean in there. I've had problems keeping my boots sealed since I went to 2500hd TREs.
It's not how fast you go. It's how quick you get there. Lifted TBSS Build
User avatar
ErikSS
Lifer
 
Posts: 2041
Joined: Fri Apr 26, 2013 5:23 pm
Location: IL, Flossmoor
Name: Erik
Vehicle Year: 2008
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Limited Slip
Rank: Offroad Rated

by The Roadie » Sun Dec 29, 2013 3:33 pm

I had minor leakage behind the driver's boot, and the teflon seal shield was torn and floating around back there. Two of my tie rod end bending incidents were on the passenger side, but the one with the most energy behind it was on the driver's side. When the inner tie rod ball shaft hits the socket edge enough to bend the shaft, that's a huge side load on the hardened rack.

Image

In my case (and I haven't put my digital calipers on it yet to measure) the rack on the driver's side looks like it had been bent backwards a few thousandths a couple of years ago, but after most of my extreme wheeling days with Greg were over. Thus the loose seal and slight leakage.

Then when I went to install new inners last week, supporting the HF tool on a jack stand to make sure I wasn't putting additional side load on the rack, I must have put in a bit more than the rack case housing could take, and the threaded collar for the tensioner adjustment bolt popped off. That destroyed my core value for the replacement I ended up getting from Rockauto. New bellow boots are gorgeous - aftermarket "universal" ones fit badly when I tried them last year. I feel so much more confident about grit staying out of the seals now.

Here's the grain of the break

Image

When I measure the rack to see how concentric it is in the housing, I'll let you know

Image
User avatar
The Roadie
Founder
 
Posts: 5011
Joined: Mon Sep 07, 2009 11:29 pm
Location: CA, Vista, San Diego County
Name: Bill Carton
Vehicle Year: 2004
Vehicle: GMC Envoy
DriveTrain: 4WD w/ G80
Rank: Expedition Guide

by Trail X » Fri Apr 18, 2014 9:11 pm

I used the outer TRE from the 2007+ HD trucks, and used the inner TRE from our trucks. Same thread. All I needed to bridge the gap was a 7.5" long M16x1.5 threaded CrMo (class B7) rod.

It simplifies my trail spares, because all I need to stock is the threaded rod. Might pick up some amount of strength from the CrMo rod, but I'm not exactly certain of the stock TRE material to compare the material properties to.
Attachments
uploadfromtaptalk1397869661999.jpg
uploadfromtaptalk1397869630948.jpg
uploadfromtaptalk1397869581967.jpg
8-) Build Thread | ExPo Build | YouTube Videos
Not all who wander are lost. -Tolkien
User avatar
Trail X
Founder
 
Posts: 9935
Joined: Mon Sep 07, 2009 10:22 pm
Location: VA, Roanoke
Name: James Downing
Vehicle Year: 2005
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Aftermarket Locker
Rank: Expedition Guide

by ErikSS » Sat Apr 19, 2014 10:11 am

James, how are you adjusting them?
It's not how fast you go. It's how quick you get there. Lifted TBSS Build
User avatar
ErikSS
Lifer
 
Posts: 2041
Joined: Fri Apr 26, 2013 5:23 pm
Location: IL, Flossmoor
Name: Erik
Vehicle Year: 2008
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Limited Slip
Rank: Offroad Rated

by Trail X » Sat Apr 19, 2014 11:51 am

Same way you adjust stock TREs. Loosen the clamp on the steering boot, loosen the jam nut (I guess you could loosen either one) and then adjust by turning the 26mm inner TRE hex.
8-) Build Thread | ExPo Build | YouTube Videos
Not all who wander are lost. -Tolkien
User avatar
Trail X
Founder
 
Posts: 9935
Joined: Mon Sep 07, 2009 10:22 pm
Location: VA, Roanoke
Name: James Downing
Vehicle Year: 2005
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Aftermarket Locker
Rank: Expedition Guide

by TBYODA » Wed Jun 11, 2014 3:45 pm

Trail X wrote:I used the outer TRE from the 2007+ HD trucks, and used the inner TRE from our trucks. Same thread. All I needed to bridge the gap was a 7.5" long M16x1.5 threaded CrMo (class B7) rod.

It simplifies my trail spares, because all I need to stock is the threaded rod. Might pick up some amount of strength from the CrMo rod, but I'm not exactly certain of the stock TRE material to compare the material properties to.


Seen your update to you build thread on this nice mod. For those of us that are not a ME or have access to source/buyer at work. :mrgreen: Could you help out your fellow members with maybe a source or the best way to look it up with the right terminology.
2008 TB Radflo coil overs, Z71 rear springs, 2" spacer, skyjacker N8030 shocks, LT285/75R16E Goodyear MTR

My Build ----- MY Youtube Channel
User avatar
TBYODA
Moderator
 
Posts: 1759
Joined: Mon Apr 01, 2013 9:07 pm
Location: NY, Rochester
Name: Robert Sengillo
Vehicle Year: 2008
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Limited Slip
Rank: Offroad Rated

by mikekey » Wed Jun 11, 2014 4:57 pm

Surprised you did that James, I thought you were in favor os just using the stock TRE's. Did we all determine that the original bent shape was because of the tire position?
Once lifted 03 Trailblazer on 35's, gave it up to travel the USA with my family.
User avatar
mikekey
Lifer
 
Posts: 2585
Joined: Sat Jan 15, 2011 4:08 am
Location: North America
Name: Mike
Vehicle Year: 2003
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ G80
Rank: Expedition Rated

by Trail X » Wed Jun 11, 2014 5:07 pm

TBYODA wrote:Seen your update to you build thread on this nice mod. For those of us that are not a ME or have access to source/buyer at work. :mrgreen: Could you help out your fellow members with maybe a source or the best way to look it up with the right terminology.

B7 grade M16 threaded rod.

I had luck finding it on Mcmaster and Fastenal. I purchased 1m sections, and cut them down to size myself.

mikekey wrote:Surprised you did that James, I thought you were in favor os just using the stock TRE's. Did we all determine that the original bent shape was because of the tire position?


I don't think I was ever in favor of the stock TREs. As soon as I saw that the tires were no longer interfering with the tie rods, I wanted a better option. I was not in favor of upping their size too far though, because it would potentially push the stresses into the rack. The thread size I used is the same as stock (M16), the only increase in strength is from the material, and that property technically doesn't come into play when calculating buckling strength (which is how these generally fail).
8-) Build Thread | ExPo Build | YouTube Videos
Not all who wander are lost. -Tolkien
User avatar
Trail X
Founder
 
Posts: 9935
Joined: Mon Sep 07, 2009 10:22 pm
Location: VA, Roanoke
Name: James Downing
Vehicle Year: 2005
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ Aftermarket Locker
Rank: Expedition Guide

Previous

Return to Lifts / Suspension

cron