Thread: Type of bolt on RRC front calipers ?

superquag , as usual you have it all stuffed up !!
That locking tab as it is , wont do anything unless you bend the tabs over . It is the bending over of the tab that is supposed to lock bearing preload .was yours BENT over?
obviously it must have been !!!Sounds to me that the succession of bad mechanics that have attended your machine have led to its condition .

Originally Posted by Tank

Superquag, how do you explain this Quote:"BOTH nuts/plate rotated as a unit as I pushed/twisted the screwdriver....."

If you could, as you said, turn the nuts and lockwasher, then our concern was that you didn't have a lockwasher that locates on the hub centre tube, if that is so then the nuts will eventually undo and the wheel will come adrift.
So one last time, DOES THE LOCKWASHER LOCATE ITSELF ON THE CENTRE HUB TUBE OR DOES IT ROTATE AS YOU HAVE STATED. Regards Frank.

Yes, it does, sort of. Manufacturing tolerances plus the entrails of a goat allow it to rotate a little. If the nuts are TIGHT against it, then the high lateral force at right-angles to the direction of the threads will result in Huge Amounts of Friction which will not allow ANY rotation from a gentle force applied.

Detailed explanation:-

Its my fault, in that I did'nt define the amount of 'Rotation', and that's gotten everyone worried.

Lets take it from the top. And I'm going to use lots of words doing it !

First, I read up Section 54 "Front Axle And Final Drive" RAVE manual, noting torque settings and order of assembley.
Looking at FRONT HUB ASSEMBLEY

Service repair no - 60.25.01.
'Remove'

Step 2 started all this, with my unfamiliarity with the exact nature and correct name of these 12 pointed bolts...

When I came to step 6, "Bend back Lock washer tabs" I inserted a flat screwdriver blade between the nut and the bent washer. Then I started to wriggle & twist it - as you do - to work it deeper....

This twisting action caused the 2 nuts and sandwiched washer to rotate several degrees, to the extent of tolerance allowed for by the "D" hole. It was not a powerful twist, it barely got started when the small rotation happened.

If the 'Lock Nut' had been correctly tightened at manufacture or at a previous servicing, , then there should have been ZERO movement with the amount of force applied.
At this point I exchanged the screwdriver for a chisel and gently tapped the flat away from said nut. As I wiped the nut (counter-clockwise rotation) it proceeded to undo.

According to the RAVE instructions, I expected this outer nut to be done up to 61Nm. (step 16, "refit") It obviously was not at 61 NM ...I doubt if my fingesr could move SIX Nm.

This WAS the loose nut, (the insane nut bought the car...) It is now a correctly tightened nut. the wheel will not fall off for any reason connected to this or the other nut ("Hub adjusting nut" , J5370M) Today I drove over 20 km on the Powelines Track, and then speed limits on highways back home. Wheel is still there.

Locking washer is bent over in differant directions, over each nut. As specified.


I'm pleased to announce that the bearings are in good nick, re-greased, and correct adjustment has yielded the expected benefit.

And best of all, I'm now conversant with the 12 pointed bolts holding the calipers on. Again.

Cheers, James.