- Location
- Port Orchard, WA
ok,
so i bought a ford 9" from a 1976 f-150 and am in the process of swaping it in...
right now i still have 235/75's so the stock 3.50 gears in the carrier was a good deal (i have 3.07's right now)
we noticed a leaky pinion seal when ripping into the axle - so i decided to change that out about 2 weeks ago
i tested the initial bearing pre-load and ended up with about 1 in/lb
that was scary...
pulled the yoke bolt off with a HAND ratchet - about 40 ft/lbs there...
i took the yoke off and visualy inspected the bearings - they looked fine...
the yoke seal surface had some huge gouges in it, but i didnt have the cash for a new seal, and plan to re-gear this summer anyway and dont mind re-filling the diff occasionaly...
so when we put the yoke back on, we torqued the nut till 160 ft/lbs then started measuring pre-load
we stoped torquing when the pre-load was about 10 in/lbs (which i later read in a different book that used gearsets use 6-8 in/lbs...
anyway, i detected some interesting amount of slop later on in the project in the backlash - so i borrowed a buddy's dial caliper and checked the backlash...
turns out i have .019" backlash...
spec (acording to a book that i have) says for used gearsets - should be between .01 and .015
how fawked am I?
also - i think what happened was when i re-torqued teh pinion, i might have pulled the pinion depth out a little, and that could have caused this slop?
this yoke was obivously removed and replaced by someone with little expierence (it was a farm truck)...
any advice?
I didnt run the pattern, because i didnt have any compound, but the wear in the teeth (from before it moved to the parts yard) looks to be what everony says is right-ish...
so i bought a ford 9" from a 1976 f-150 and am in the process of swaping it in...
right now i still have 235/75's so the stock 3.50 gears in the carrier was a good deal (i have 3.07's right now)
we noticed a leaky pinion seal when ripping into the axle - so i decided to change that out about 2 weeks ago
i tested the initial bearing pre-load and ended up with about 1 in/lb
that was scary...
pulled the yoke bolt off with a HAND ratchet - about 40 ft/lbs there...
i took the yoke off and visualy inspected the bearings - they looked fine...
the yoke seal surface had some huge gouges in it, but i didnt have the cash for a new seal, and plan to re-gear this summer anyway and dont mind re-filling the diff occasionaly...
so when we put the yoke back on, we torqued the nut till 160 ft/lbs then started measuring pre-load
we stoped torquing when the pre-load was about 10 in/lbs (which i later read in a different book that used gearsets use 6-8 in/lbs...
anyway, i detected some interesting amount of slop later on in the project in the backlash - so i borrowed a buddy's dial caliper and checked the backlash...
turns out i have .019" backlash...
spec (acording to a book that i have) says for used gearsets - should be between .01 and .015
how fawked am I?
also - i think what happened was when i re-torqued teh pinion, i might have pulled the pinion depth out a little, and that could have caused this slop?
this yoke was obivously removed and replaced by someone with little expierence (it was a farm truck)...
any advice?
I didnt run the pattern, because i didnt have any compound, but the wear in the teeth (from before it moved to the parts yard) looks to be what everony says is right-ish...