Gear Pattern Check
- Thread starter AllThrtl
- Start date
RESURECTIONJK
Hooked
Coast side is a little deep but the drive side looks decent. .008 is a little slack but not out of spec. I’d keep at it and see if you can improve the coast side a bit.
CalSgt
Hooked
How are you applying pressure/resistance to the carrier when checking for pattern?
It looks like you’re getting sufficient resistance when doing the coast side but the drive side is hard to read.
Sometimes I’ll thin out the patterning dye with a few drops of oil or ATF to get a better idea of what I’m dealing with. It’s hard to tell if any abrupt edges would be on the drive side of the gear
ETA: I usually tap a chisel between the carrier and housing to get resistance on the assembly to get my pattern. I’ll switch from bottom and top of the carrier depending on which direction it spins so the chisel is being pulled in tighter as I spin the pinion.
@Disciple Off Road patterns he post’s always look great maybe he’ll chime in.
It looks like you’re getting sufficient resistance when doing the coast side but the drive side is hard to read.
Sometimes I’ll thin out the patterning dye with a few drops of oil or ATF to get a better idea of what I’m dealing with. It’s hard to tell if any abrupt edges would be on the drive side of the gear
ETA: I usually tap a chisel between the carrier and housing to get resistance on the assembly to get my pattern. I’ll switch from bottom and top of the carrier depending on which direction it spins so the chisel is being pulled in tighter as I spin the pinion.
@Disciple Off Road patterns he post’s always look great maybe he’ll chime in.
Disciple Off Road
Hooked
Starting depth is usually .042 on the JK is usually a good starting point and going up from there. I’d actually just try getting closer to .006 backlash before pulling pinion shims if you can.
And definitely redo the pattern doing what @CalSgt said. Adding pressure to ring gear really helps lay a good pattern along with thinner paste.
And definitely redo the pattern doing what @CalSgt said. Adding pressure to ring gear really helps lay a good pattern along with thinner paste.
AllThrtl
New member
Any advice on carrier preload?, I have a spreader but it's hard to get this housing to spread much, about .005 max. I can't get the carrier in or out without spreading it, but when relaxed it only adds about 2 in/lbs to the pinion preload. I don't know how else to measure that, if I should. The carrier had little to no preload in the stock JK housing. Pinion had maybe 3 in/lbs.
I appreciate every ones input.
OverlanderJK
Resident Smartass
Disciple Off Road
Hooked
I need to start proof reading before I hit send, starting to sound like Bob
Disciple Off Road
Hooked
I've never used a spreader and do it by feel but, you should have to tap in the shims. You can get a good feel for preload as well when pulling it back out. It shouldn't be crazy tight but have some decent resistance coming out. I'm sure you may have already done it but with the Dynatrac 44 housing, the carrier bearing caps on the locker side usually have to get shaved down a tad or it rubs the locker.
The pinion preload was 3 in/lbs? It should be set to 22-35 in/lbs WITHOUT the carrier installed.
jeeeep
Hooked
AllThrtl
New member
Ok thanks, that answers what I was curious about. Yes, I had read that the bearing caps tended to rub but these didn't. I did go ahead and smooth them up a little to be on the safe side. Yes, very little preload on the front pinion. The rear was closer to 15 to 20. 2015 with 75k on the clock. Thanks Jeremy
