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| Illustration 1 | g06196630 |
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Output Transfer Gear (OTG) (1) Solenoid valve for the Interaxle Differential lockup clutch (2) IAD Clutch pressure test port (3) Manifold (4) Differential Group (5) Input shaft from transmission (6) Input Gear (7) Interaxle differential lockup clutch (8) Output shaft to rear differential (9) Output shaft to front differential (10) Output gear from differential to front output shaft | |
The Output Transfer Gears (OTG) transfer power from the transmission to the rear differential and to the front differential.
Power flows from the output shaft of the transmission to input shaft (5) in the OTG group. Power is transmitted through gear (6) to differential group (4).
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| Illustration 2 | g06196645 |
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Exploded view of the OTG Differential Group (6) Input Gear (10) Output gear from differential to front output shaft (11) Hub (Splined to the inside clutch pack) (12) Gear cluster (contains the differential clutch pack and connects to output gear for the front differential) (12A) Part of gear (2) that is splined to the inner portion the planetary gears (13) Planet carrier (14) Planet gear (15) Transfer gear (Connected to Input Gear) (16) Ring Gear (17) Gear shaft that drives the rear shaft yoke to the rear differential (18) Differential group clutch housing and piston (19) Clutch pack | |
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| Illustration 3 | g06196668 |
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Output Transfer Gear (OTG) (1) Solenoid valve for the Interaxle Differential lockup clutch (2) IAD Clutch pressure test port (3) Manifold (12) Gear cluster (contains the differential clutch pack and connects to output gear for the front differential) (18) Differential group clutch housing and piston (19) Clutch pack | |
Input gear (6) drives transfer gear (15) on the differential group. Gear (15) turns planetary (13).
The outer portion of planet gears (14) drive ring gear (16) for the rear axles.
The inner portion of planet gears (14) drive gear (12A) that is part of gear (12). Gear (12) is connected to gear (10) that drives the front differential.
Under normal conditions, lockup clutch (7) is not engaged. 60% of the torque from the transmission is transmitted to the center and rear differentials. 40% of the torque is transmitted to the front differential.
When conditions exist, the ECM will send a command to solenoid (1) and engage the clutch in differential group (4). Engaging the rear differential clutch will lock gear (11) to gear (12). Gear (11) is splined to shaft (17). Under this condition, the front and the rear shafts receive equal torque.