Replacing an IBF314 PTO? Caution! This WPT / Twin Disc clutch is different!
Mechanical power takeoff clutches usually have a one piece pilot bearing that is pressed into the flywheel. In earlier Dr. Diesel™ Tech Tips (Tech Tip #67: How to Remove a Troublesome Pilot Bearing (Part 1), Tech Tip #95: Removing a Troublesome Pilot Bearing (Part 2), and Tech Tip #158: Power Takeoff Clutch Maintenance: How to Remove a Troublesome Pilot Bearing (Part 3)) we wrote about pilot bearing installation and removal techniques.
IBF pilot bearings are a two piece bearing with a roller bearing and a removable inner race. To install them properly requires a different technique than the standard one piece pilot bearing used in other PTO models.
This Dr. Diesel™ Tech Tip focuses on how to install this two piece bearing on a WPT or Twin Disc IBF314 PTO.
If your PTO came with a split-type roller pilot bearing, please follow the steps below, while referring to the diagram.
- Press the pilot bearing inner race on the end of the shaft, stopping when the bearing is flush with the shaft.
- Measure the distance from the PTO bell housing face to the end of the bearing inner race.
Record this value, A: __________
- Measure the width of the bearing outer race.
Record this value, B: __________
- Subtract the value of step 3 from the value of step 2 (A-B=C). This is the distance the outer race needs to be installed from the engine bell housing face for proper alignment.
Record this value, C: __________
- Install the outer pilot bearing race into the flywheel to the depth calculated in step 4. It is recommended to sign, date, and keep a copy of this for your records.
For more information, please take a look at WPT Power’s manual: Mechanical Power Takeoff Installation and Maintenance Manual 6” through 18”.
We hope that this Dr. Diesel™ Tech Tip has been helpful.
If you need aftermarket replacement parts for your IBF314 Power Takeoff, check out our website store!
