The T90 is as much a
tradition as it is a transmission for classic Jeep people. It is a legendary gearbox and
surprisingly tough. However, a couple of the T90's kinks are a bit legendary themselves. We
carry what it takes to iron them out and make lasting improvements.
After 40 years of rebuilding these transmissions, we've assembled the most complete master
rebuild kits available anywhere.
A T90 that pops out of second gear, has excessive noise, leakage and looseness in operation can
be repaired and solved.
The Master Rebuild Kit
We excel in providing our curated selection of parts, including our specially hardened cluster
idler shaft which will provide far longer service and quieter operation. Novak also provides a
sealed input bearing and plug method, which can eliminate leaks when used in conjunction with
the factory felt seal, which is far superior to the conventional method of using the felt seal
alone.
Rebuild Requirements
It is very common for our customers to do top-level rebuild work, using good
methods and by following our instruction guide.
We suggest the rebuilder have access to a set of snap ring pliers and pullers in addition to a
standard tool set.
Other T90 Components
Use our parts selector below to purchase hard parts or rebuild parts a la carte.
Sealed front bearing is provided but not pictured.
For IH Scout T90 parts, contact us and we'll help you
determine which rebuild kit or parts will be appropriate.
Click on any item description in blue below to expand
its details for purchase.
For your reference, all asterixed * items below are included in our master rebuild kit, above.
Items indicated with a "‡" are not available singly, but are available in the Small Parts Kit, #A
below.
A. Kit, small parts *. Includes all items listed below with a
"‡"
B. Kit, gaskets and front seal
1. Ring, retaining, front bearing to case *‡
2. Ring, retaining, front input shaft to bearing *‡
3. Bearing, front input shaft *
4. Slinger, front input bearing *‡
5. Shaft, input, main drive gear
6. Bearings, needle rollers, input shaft to mainshaft *‡
7. Ring, synchronizer, 3rd gear *
8. Ring, retaining, 2nd-3rd clutch hub to mainshaft *‡
9. Spring, radial, 2nd-3rd clutch hub *‡
10. Keys, synchronizer (also called pawls, dogs, struts, etc.)
*‡