Is this the sign of an upcoming Birf rebuild?

[lnnguyen01]

From the pictures, the knuckles are very low on moly, maybe 1/4 full, if that, should be 1/2 to 3/4 full. In that condition, it takes very little gear oil seepage to contaminate what is likely old moly grease. My first step would be to add a half tube of moly to each knuckle and change the gear oil (likely thick, contaminated with moly) then drive it and see what you have.

Sorry if I sound stupid but where is the place to add more grease?
Thanks

 

[NLXTACY]

Sorry if I sound stupid but where is the place to add more grease?
Thanks

Top of the knuckle there is a square plug. Its about 1/2" wide. Unscrew that and use a zip tie to check the grease depth.

 

[lnnguyen01]

Top of the knuckle there is a square plug. Its about 1/2" wide. Unscrew that and use a zip tie to check the grease depth.

Is it this in the red area that's held down by two bolts?
Thanks

 

[NLXTACY]

No, to the right and lower. It's the square plug.

 

[lnnguyen01]

No, to the right and lower. It's the square plug.

This one in blue? Thanks so much!

 

[LFD2037]

It's the one all by itself that's not holding anything.

 

[NLXTACY]

Yeah, the one in blue

 

[Douglas S]

The only reason those boots exist is for mining applications - keeping corrosive spray off the knuckles. This has been hashed out in other parts of this forum before, the boots are not a new product.

 

[Tools R Us]

The square plug, 12mm. The best procedure we have found: Turn the steering all of the way towards the side that you are working on, clean around the plug, loosen the plug (12mm open end) clean again and remove the plug. Use a small screwdriver to remove the skin of grease that is often in the hole. With light assist look into the hole, should be able to see the top of the birf and ABS ring, the grease should be about up to the top of the ABS ring, if not add some. Drive a few days and recheck. The knuckle should not be packed full, needs an air space, so add, drive, recheck, repeat, is the best method we have found to bring them up to the proper level.

 

[lnnguyen01]

Yeah, the one in blue

Thanks!

 

[jtwopark]

that products looks very interesting.....a group buy? might be interested