PT.net Gear Install How-To
04-07-2010, 09:13 PM
#32
great write up, ive got a question tho. Ive herd it mentioned on here if your just changing the carrier to say a tru-trac and no new gears that there is no adjustment necessary or shim change needed.
whats your thoughts on that, would everything like preloads and backlash be generally about the same??
whats your thoughts on that, would everything like preloads and backlash be generally about the same??
04-07-2010, 10:00 PM
#33
if axisT6 doesnt mind, i little tip for those of you who do not have access to a press.
a little heat goes a long way
im not saying go nuts on bearings with the torch, but for bearings that are a pressed fit, you can put them in the oven on about 300-350 degrees, for about 30 min, and the bearing should slide right on. i advise against using a torch because it can/will heat up very fast and and will not heat evenly. Now i have used a torch before, but a oven is much better.
Iv used this for all sorts of bearings on PTOs, marine gears, etc.
a little heat goes a long way
im not saying go nuts on bearings with the torch, but for bearings that are a pressed fit, you can put them in the oven on about 300-350 degrees, for about 30 min, and the bearing should slide right on. i advise against using a torch because it can/will heat up very fast and and will not heat evenly. Now i have used a torch before, but a oven is much better. Iv used this for all sorts of bearings on PTOs, marine gears, etc.
yea we have a small 'lab oven' at the shop we use, but i have used the house oven once
04-07-2010, 10:07 PM
#35
great write up, ive got a question tho. Ive herd it mentioned on here if your just changing the carrier to say a tru-trac and no new gears that there is no adjustment necessary or shim change needed.
whats your thoughts on that, would everything like preloads and backlash be generally about the same??
whats your thoughts on that, would everything like preloads and backlash be generally about the same??
The proper way to handle a diff swap would be:
1. Measure current backlash as you will want this reading to be your target.
2. Remove old diff and swap the ring gear over using NEW ring gear bolts.
3. Install new diff bearings.
4. Using the old shims as reference, build a new set of shims about 10 thousanths thinner per side.
5. Follow the procedures written at the beginning of this thread for backlash.
04-07-2010, 10:10 PM
#36
TECH Enthusiast
also, the only inch pound torque wrench i found only goes up to 15 inch pounds, its small lol. but for the 14 bolt, preload is between 15-22 inch pounds, so can i just get to 15, and than a little more and be ok?
04-07-2010, 10:18 PM
#38
If I were you, I would find the correct inch pound torque wrench with the appropriate range so that you know FOR SURE that you are in spec.
A gear install is something you want to get right the first time. Trust me.
