TREMEC T5R Transmission

TREMEC T5R TRANSMISSION
The Borg Warner T5R (77 mm 5 speed) is a constant mesh transmission, synchronized in all speeds except reverse :
The main components are:
1. Input shaft gear.
- An integral shaft is splined to engage with the clutch driven plate.
- The gear drives the countergear.
- A tapered roller bearing supports the shaft in case.
2. Countershaft gear.
- The countershaft gear is one unit for constant rotation with the input shaft gear.
- Tapered roller bearings support the countershaft gear in the case.
- Thrust washer limits the play of the countershaft gear.
- An extra gear is mounted to the countershaft gear for 5th speed.
3. Mainshaft.
- The drive gears rotate freely on the mainshaft and are in constant mesh with countershaft gear.
- Key-type synchronizers engage the gears.
- The 1st and 2nd synchronizer hub is machined in place.
- A tapered roller bearing supports the mainshaft in the rear of the case.
- Roller bearings support the mainshaft independently in the input shaft gear.
- The input shaft gear and mainshaft are engaged by a synchronizer for direct drive in top gear.
- Thrust washers limit the play of the mainshaft.
4. Reverse idler gear.
- The idler gear drives the mainshaft in reverse.
- The idler gear is supported on its own shaft.
- A reverse brake feature brakes the countershaft gear in the reverse shift sequence.
5. Shift lever.
- The shift lever is mounted on the extension housing and holds the offset lever.
- The shift lever moves the shaft which is mounted in the transmission top cover.
- Shift forks mounted on shaft move the synchronizers to engage the gears.
- A pin-type interlock blocks the other forks when one is moved.