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Zerk fitting on leaf spring attaching point

Flyer32RLS

Well-known member
Having had the RV for a couple of months and have taken some trips I was watching YouTube about axle servicing. The gentleman mentioned that the wet bolts should be serviced every 1000 miles or so. While this would be the first time, I thought it would be a good idea to make sure that they had in fact been serviced properly at the factory.
Well, other than being difficult to get the grease fitting off once serviced, I got them all done but one. The right rear single wet bolt holding the leaf springs appeared not to have any grease. Having greased all the others and there are quite a few, it would appear that they had been greased but not to the point of being able to see some grease come out around the bolt. They do now so I feel like they are greased properly. All but that one on the right rear, I checked by grease gun twice and both times when pumping the handle, grease came out the nozzle. But having put the nozzle on the zerk fitting and I pumped the grease gun 15-20 times, could not get any grease to protrude around the wet bolt. The zerk fitting is not a removable one but is part of the wet bolt.

Does anyone have any idea on how to get grease into the fitting? I know I can replace the wet bolt but not sure I have the skill or the tools to drop the leaf springs.
I can drop the springs but not sure I could get them back up to put the bolt thru,
Any help would be appreciated!
 

BryanValRox

Elite Member
Having had the RV for a couple of months and have taken some trips I was watching YouTube about axle servicing. The gentleman mentioned that the wet bolts should be serviced every 1000 miles or so. While this would be the first time, I thought it would be a good idea to make sure that they had in fact been serviced properly at the factory.
Well, other than being difficult to get the grease fitting off once serviced, I got them all done but one. The right rear single wet bolt holding the leaf springs appeared not to have any grease. Having greased all the others and there are quite a few, it would appear that they had been greased but not to the point of being able to see some grease come out around the bolt. They do now so I feel like they are greased properly. All but that one on the right rear, I checked by grease gun twice and both times when pumping the handle, grease came out the nozzle. But having put the nozzle on the zerk fitting and I pumped the grease gun 15-20 times, could not get any grease to protrude around the wet bolt. The zerk fitting is not a removable one but is part of the wet bolt.

Does anyone have any idea on how to get grease into the fitting? I know I can replace the wet bolt but not sure I have the skill or the tools to drop the leaf springs.
I can drop the springs but not sure I could get them back up to put the bolt thru,
Any help would be appreciated!
Morning folks, I would be very surprised if the Zerk was not removable. They normally screw into the bolt.

Zerks that don’t take grease can usually be traced back to two causes. 1. The little ball check isn’t opening or there is a restriction issue between the Zerk and the wet bolt exit holes.

I experienced one that wouldn’t take grease on our 310 RL and upon removal of the bolt found the exit holes plugged with bushing material. Fortunately, no major bushing damage and I was able to clean the bolt passage out and restored the functionality of the wet bolt.

What I didn’t know at the time was that the bolts are serrated (on the head side), This is to prevent bolt rotation and designed to keep the grease exit holes at the 3 and 9 o’clock position. So, if you ever try to remove one, make sure you are trying to rotate the nut and are holding the bolt head stationary.

Once the assemble is supported properly and the nut is removed, you can tap the bolt out, be sure not to damage the threads. You don’t have to remove the entire spring. If you have a tapered pin punch that is large enough it will enter the hole as the wet bolt is pushed out.
This will help maintain the alignment making installing the bolt much easier .
Just be sure you follow all safety measures if you tackle this project , things like chocking wheels, support the frame and axle with jackstands and never ever stick your finger in the spring or hanger holes.
Hope this helps.
 

WE3ZS

Active member
And to make those hard to access zerk fittings easier, you can replace them (yes, they do unscrew) with 45 or 90 degree ones which should make snapping the grease gun nozzle on/off a bit easier.
And I agree with the above post about probable causes to your issue.
 

Flyer32RLS

Well-known member
Thanks, I will look again but after cleaning the old grease off, it appeared that the bolt head and zerk fitting was one.
I shall look again.
I have a device that fits over the zerk fitting and has a small pin in middle to push that little ball in. Thought that would solve the problem but no such luck.
I'll look again this weeked!
Thanks!!
 
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