Transmission Power Flow
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| Illustration 1 | g06264764 |
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Component identification (1) Input (2) Implement pump (3) Motor/pump (variator) (4) Planetary (5) Steering and charge pump (6) AUX Synchronizer (7) Auxiliary (8) LoF HiR synchronizer (9) Low forward position (10) High reverse position (11) Clutch A (12) LoR HiF synchronizer (13) Low reverse synchronizer position (14) High forward synchronizer position (15) Clutch B (16) Output | |
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| Illustration 2 | g06264776 |
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Component identification (1) Input (3) Motor/pump (variator) (4) Planetary (6) Synchronizer - auxiliary range (8) LoF HiR synchronizer (11) Clutch A (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (19) Planetary low range output gear (20) Planetary (secondary) (21) Idler gear (22) Planetary high range output gear (23) Planetary train 1 (24) Planetary train 2 (25) Input gear (26) Planetary input gear (M4) (27) HiF gear (28) HiR gear | |
Torque transmitted from the engine is sent to the input shaft (1) of the transmission. The input shaft then splits the torque from the engine and sends the torque to the variator (3) and to input gear (25). The torque from the input gear is then sent to the idler gear (21), planetary input gear M4 (26), planetary train 1 (23), and planetary train 2 (24).
The output of the variator is sent to the ring gear of the secondary planetary set (20). The Power Train ECM controls the output of the variator to reduce, eliminate, or add to the input speed of the first planetary set. From the secondary planetary set, the torque is sent through the low range output gear (19) to gear (18) of the LOW FORWARD/HIGH REVERSE shaft. Gear (18) is also meshed to gear (17) of the LOW REVERSE/HIGH FORWARD shaft.
The Power Train ECM will then use the transmission control solenoids to move the LOW FORWARD/HIGH REVERSE synchronizer (8), LOW REVERSE/HIGH FORWARD synchronizer (12), or AUXILIARY synchronizer (6) based on the operators command and the current machine state. From the synchronizers, power flows to either clutch A (11) or clutch B (15) before the power is sent to the output shaft (16) of the transmission.
Ready for forward or reverse
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| Illustration 3 | g06265562 |
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Neutral (1) Input (3) Motor/pump (variator) (4) Planetary (6) AUX Synchronizer (8) LoF HiR Synchronizer (9) Low forward synchronizer position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (15) Clutch B | |
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| Synchronizer (9) | Synchronizer (13) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | LR | N | OFF | OFF | Near (-) Max |
Low Reverse stays engaged. Ready for forward to reverse shift.
Recirculating power at Motor/pump (variator) (3).
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| Illustration 4 | g06265584 |
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Low Forward - Near Zero Shift (1) Input (3) Motor/pump (variator) (4) Planetary (8) LoF HiR Synchronizer (9) Low forward synchronizer position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (19) Planetary Lo range output | |
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| Synchronizer (9) | Synchronizer (13) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | LR | N | ON | OFF | Decreasing |
Low Forward - Away From Zero Shift
Low Reverse neutralized for efficiency.
Recirculating power at motor/pump (variator) (3).
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| Illustration 5 | g06265928 |
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Low Forward - Away From Zero Shift (1) Input (3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear | |
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| Synchronizer (9) | Synchronizer (13) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | N | N | ON | OFF | Decreasing |
Low Forward - Zero Motor Speed
Zero pump displacement.
Zero Motor/pump "variator" (3) speed.
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| Illustration 6 | g06265941 |
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Low Forward - Zero Motor Speed (1) Input shaft (3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear | |
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| Synchronizer (9) | Synchronizer (13) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | N | N | ON | OFF | Increasing |
Low Forward - Near L/H Shift Point
High forward, ready for low to high shift.
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| Illustration 7 | g06266004 |
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Low Forward - Near L/H Shift Point (1) Input (3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (14) Synchronizer - high forward position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (27) HiF gear | |
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| Synchronizer (9) | Synchronizer (14) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | HF | N | ON | OFF | Increasing |
Clutch (11) and clutch (15) are zero relative speed.
Both clutches can be engaged for a fraction of a second.
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| Illustration 8 | g06266031 |
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At Low High Shift Point (1) Input (3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (14) Synchronizer - high forward position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (27) HiF gear | |
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| Synchronizer (9) | Synchronizer (14) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | HF | N | ON | ON | Near max |
High Forward - Near Low or High Shift Point
Low forward stays engaged. Ready for high to low shift.
Recirculating power at Motor/pump (variator) (3).
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| Illustration 9 | g06266037 |
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High Forward - Near low or high Shift Point (1) Input (3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (14) Synchronizer - high forward position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (27) HiF gear | |
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| Synchronizer (9) | Synchronizer (14) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | HF | N | OFF | ON | Decreasing |
High Forward - Zero Motor Speed
Zero Motor/pump (variator) (3) speed.
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| Illustration 10 | g06266097 |
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High Forward - Zero Motor Speed (1) Input (3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (14) Synchronizer - high forward position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (27) HiF gear | |
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| Synchronizer (9) | Synchronizer (14) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| LF | HF | N | OFF | ON | Increasing |
High Forward - Near Auxiliary Shift Point
Low forward synchronizer neutralized.
Clutch (11) blipped to speed match for aux synchronizer.
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| Illustration 11 | g06266234 |
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(1) Input
(3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (7) Auxiliary (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (14) Synchronizer - high forward position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (27) HiF gear | |
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| Synchronizer (9) | Synchronizer (14) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| N | HF | N | Blip | ON | Increasing |
- Clutch (15) is neutralized.
- Variator displacement changed from negative max displacement to near positive max displacement to synchronize speeds.
- Auxiliary synchro engaged.
High forward synchro engaged. Clutch (11) engaged.
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| Illustration 12 | g06266238 |
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(1) Input
(3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (7) Auxiliary (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (14) Synchronizer - high forward position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (27) HiF gear | |
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| Synchronizer (9) | Synchronizer (14) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| N | HF | Auxiliary | ON | OFF | Negative Max to Positive Max |
Auxiliary - Away From Aux/H Shift
Recirculating power at Motor/pump (variator) (3).
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| Illustration 13 | g06266240 |
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(1) Input
(3) Motor/pump (variator) (4) Planetary (6) Aux Synchronizer (7) Auxiliary (8) LoF HiR Synchronizer (9) Synchronizer - low forward position (11) Clutch A (12) LoR HiF Synchronizer (13) Low reverse synchronizer position (14) Synchronizer - high forward position (15) Clutch B (16) Output (17) LoR gear (18) LoF gear (27) HiF gear | |
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| Synchronizer (9) | Synchronizer (14) | Synchronizer (6) | Clutch A (11) | Clutch B (15) | Motor/Pump (Variator) (3) |
| LF/HR/N | LR/HF/N | Aux/N | On/Off | On/Off | Displacement |
| N | HF | Auxiliary | ON | OFF | Decreasing |
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