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jheitman
08-24-2010, 06:45 PM
The only torque spec I could find in the owners manual was for the wheel nuts; 120 ft-lbs.

I would also like to occasionally check other main structural bolt tightness.

What is the specified torque for the 7/8" nuts on the U-Bolts that hold the axles to the frame?
What are the torque specifications for the bolts in the King Pin Box?
What's the spec for the bolts on the stairway?
What else should be checked from time to time on the Greystone 32RE?
Thanks,
jim

Bob&Patty
08-24-2010, 10:07 PM
120 ft-lbs is correct..if you have the aluminum wheels.
65 ft-lbs for the "U" bolts nuts
90-110 ft-lbs
what stairway....the entry steps?? I have no idea...but I just lowered mine. As tight as I could get a 3/8 bolt with a 10" ratchet without breaking it.

jheitman
09-10-2010, 10:36 PM
120 ft-lbs is correct..if you have the aluminum wheels.
65 ft-lbs for the "U" bolts nuts
90-110 ft-lbs
what stairway....the entry steps?? I have no idea...but I just lowered mine. As tight as I could get a 3/8 bolt with a 10" ratchet without breaking it.


I bought a torque wrench and checked the "U" bolt nuts that hold the axels to the frame. Most were tight, i.e. didn't move when wrench is set at 65 ft-lbs. However, two or three actually turned 1/8 turn or so before reaching the set torque. Good thing I checked them out. I didn't see any sign of springs flattening, they look nicely bowed upward.

Checked the wheel nuts and they were all up to spec.


Anyone know what torque to use on the hot water tank anode rod nut?
How about the bolts attaching the king pin box to the frame?
Any others I should check periodically?

jim

Rocky
10-06-2010, 07:51 PM
It appears the axle's U-bolt nuts for a 6-8K axle should be torqued to 90 ft-lbs. This information is in the new Lippert's Trailer Axle Operation and Service Manual, rev082710 (assume dated August 27, 2010), page 13.

Before, I have always seen in the forums the 65 ft-lbs for the U-bolts. The 65 ft-lbs is good for the 5.2K axles.

Rocky
10-07-2010, 09:37 AM
Re: What are the torque specifications for the bolts in the King Pin Box?

The current online Heartland Owner's Manual, on print page #22, states "Using a torque wrench, tighten kingpin box bolts to 60-70 ft. lbs".

This is a lot lower value than what I read in another forum post but that source was not from Heartland. After reading about a lot of problems concerning loose bolts in forum post, I am going to be vigilant about checking torque on the wheel bolts, kingpin box bolts and the axle U-bolts. I am disappointed that the Heartland factory did not respond to your question since it is very important and it was posted in "Ask The Factory"

FennerJ
10-07-2010, 02:18 PM
5.2K axle = 65 ft lbs
6 8K axle = 90 ft lbs
2K axle = 25 ft lbs
3.5K w/1/2 axle = 50 ft lbs
Pin boxes are all 100 110 ft lbs
Step have Ny-lock nuts. There is no torque value.

Rocky
10-07-2010, 05:20 PM
5.2K axle = 65 ft lbs
6 8K axle = 90 ft lbs
2K axle = 25 ft lbs
3.5K w/1/2 axle = 50 ft lbs
Pin boxes are all 100 110 ft lbs
Step have Ny-lock nuts. There is no torque value.

Thank You for verifying these values

jheitman
10-10-2010, 12:22 PM
Thank You for verifying these values


yes, thanks a lot. Its been quite a long time since I posted this question. Good thing I stopped back to see all this good information.

Thanks,