Manual Transaxle
Manual Transaxle
Manual Transaxle
The G6M 6-speed manual transaxle features the following:
- Fully synchronized 6-speed transaxle
- Synchronized reverse gear
- Six forward speeds and one reverse speed
- An aluminum main case, clutch housing and structural cover
The function of the transmission is to move the vehicle from a rest position to motion. This is done by transferring the engine torque, through the transaxle, to the front wheels. The transmission input shaft receives power when the clutch is engaged. Torque flows through the input shaft to the drive gear. The forward gears are selected by a synchronizer mechanism. The helical-cut forward gears are in constant mesh with the corresponding gears on the opposing shaft. Reverse gears have helical-cut teeth and are engaged through the reverse idler gear.
External Shift Linkage
The manual transaxle is controlled by a floor-mounted gearshift lever located in the floor console. Connection between the floor-mounted gear shift lever and the manual transaxle gear shift control mechanism is made through 2 shift cables. The clutch pedal disengages the clutch allowing the transaxle to be shifted from one gear to another.
Internal Shift Linkage
The G6M manual transaxle is shifted internally by 4 shift forks. The reverse gear shift fork shifts in and out of the reverse gear. The 1st/2nd, 3rd/4th and 5th/6th shift forks control all forward gear shifts.
Reverse Gear
The reverse idler gear is mounted on a reverse idler gear shaft supported at one end in the clutch housing and at the other in the transaxle case by a reverse idler shaft lock bolt.
When the reverse idler gear slides on the reverse idler gear shaft, it engages the reverse drive gear on the input shaft and the reverse gear on the output shaft. The driving gear is part of the input shaft and the reverse gear is machined on the outside diameter of the 1st/2nd synchronizer sleeve.
When the reverse idler gear rotates on the reverse idler gear shaft, it reverses the power flow to the output shaft.
To engage the reverse idler gear, the motion of the shift fork is transferred to the reverse gearshift lever through the shift gate. The reverse gearshift lever is mounted on a meshlock plunger that allows it to act as a fulcrum. When the reverse gearshift selector arm moves its end of the shift fork, the opposite end slides the reverse idler gear into engagement with the input shaft and output shaft reverse gears.
Differential
The ends of the differential are supported on tapered roller differential bearings. The cups for these differential bearings are seated in the transaxle case and the flywheel housing. Differential bearing preload is set using a selective differential bearing shim that is installed under the differential bearing cup in the transaxle case.
The differential includes the differential side gears and the shaft mounted differential pinion gears. Direct contact between the gears and the differential case is prevented by the differential side gear thrust washers installed under the gears. The differential pinion shaft is held in position by a differential pinion shaft lock pin that extends through the end of the differential pinion shaft and the differential case.
The speedometer drive gear is also mounted on the differential case. It is located between the tapered roller differential bearing and the differential case. A tab on the speedometer drive gear and a matching slot in the differential case prevent the speedometer drive gear from spinning on the differential case.