 | |
| Illustration 1 | g00809063 |
(1) Solenoid for speed clutch 2 (2) Solenoid for speed clutch 3 (3) Reverse solenoid (4) Forward low solenoid (5) Forward high solenoid | |
 | |
| Illustration 2 | g00809064 |
(6) All wheel drive solenoid (If equipped) (7) Solenoid for speed clutch 1 | |
The solenoid control valves for the transmission are installed on the top and on the right side of the transmission housing. The solenoid control valves for the transmission control the various combinations of speed clutches, direction clutches and the AWD clutch that enable the transmission to properly move the machine.
The solenoid control valves direct the pressurized oil to the forward clutch packs, the reverse clutch pack and the speed clutch packs. In the NEUTRAL position, clutch pressure is dumped back to the transmission case. The reverse solenoid of the solenoid control valve for the transmission is electrically connected with the backup alarm switch. The backup alarm switch activates the backup alarm.
 | |
| Illustration 3 | g00809021 |
(8) Neutralizer switch | |
 | |
| Illustration 4 | g00809269 |
(9) Neutralizer switch (if equipped) | |
A neutralizer switch is located on the left side of the dash (8) and on the loader control lever (9). The neutral lock switch on the left side of the dash disables all transmission solenoids. The neutralizer switch that is located on the loader control lever disengages the solenoids for direction control.
If the machine is turned off, and the speed/direction control lever is left in the FORWARD position or the REVERSE position, the machine will not be able to start until the speed/direction control lever is returned to the NEUTRAL position.
The neutralizer switch (9) that is located on the loader control lever also is a downshift control when the autoshift function is selected. If the neutralizer switch is pressed and released within 0.5 seconds, the transmission will downshift to the next lower speed and an engine overspeed will not occur. The transmission can be downshifted multiple speeds if the button is pressed quickly multiple times.
 | |
| Illustration 5 | g00809020 |
(10) Speed/direction control lever | |
The solenoid control valves are actuated by electricity. The solenoids are actuated by the speed/direction control lever (10) that is on the steering wheel column.
All Wheel Drive (If equipped)
The all wheel drive attachment will improve mobility and overall performance of the loader in conditions of poor traction.
The front drive axle may be engaged at any time by activating the all wheel drive switch on the right side of the front console. This switch may be activated when the vehicle is stopped or while the vehicle is moving.
 | |
| Illustration 6 | g00809070 |
(19) All wheel drive switch | |
The following components are required with the all wheel drive attachment: all wheel drive switch (19), all wheel drive solenoid valve, transmission for the all wheel drive, clutch pack for the all wheel drive (5) that is on the output shaft for the all wheel drive, a steerable front drive axle and front drive shaft with a guard. The front drive shaft connects the output shaft for the all wheel drive with the steerable front drive axle.
Transmission Operation
 | |
| Illustration 7 | g00822073 |
NEUTRAL (1) Oil pump (2) Pump pressure tap (3) Oil filter with bypass (4) Autoshift electronic control module (5) All wheel drive clutch (If equipped) (6) Speed clutch 2 (7) Speed clutch 3 (8) Reverse clutch (9) Forward high clutch (10) Forward low clutch (11) Speed clutch 1 (12) System relief valve (13) Torque converter inlet relief valve (14) Torque converter (15) Pressure port for the torque converter outlet (16) Test port for the lube pressure (17) Suction screen (AA) Pump supply oil (BB) Converter inlet oil (CC) Lubrication oil (DD) Tank oil | |
Neutral
When the engine is running, oil pump (1) pulls oil from the reservoir through suction screen (17) to the pump. The oil pump sends the oil through filter (3) and to the solenoid control valves for the transmission.
With the speed/direction control lever in the NEUTRAL position, oil flow is blocked by the solenoid control valves.
This allows oil that is not needed by the transmission clutches to flow through the system relief valve (12) to the torque converter (14) .
For machines that are equipped with all wheel drive, a solenoid valve is used to activate the all wheel drive clutch (5). With the all wheel drive switch in the OFF position, the oil is blocked by the all wheel drive solenoid valve.
With the all wheel drive switch in the ON position, oil flows through the all wheel drive valve to the all wheel drive clutch (5) in order to engage the all wheel drive clutch.
Run The Engine (First Speed Forward)
 | |
| Illustration 8 | g00822075 |
All wheel drive in first speed forward (1) Oil pump (2) Pump pressure tap (3) Oil filter with bypass (4) Autoshift electronic control module (5) All wheel drive clutch (6) Speed clutch 2 (7) Speed clutch 3 (8) Reverse clutch (9) Forward high clutch (10) Forward low clutch (11) Speed clutch 1 (12) System relief valve (13) Torque converter inlet relief valve (14) Torque converter (15) Pressure port for the torque converter outlet (16) Oil cooler bypass valve (17) Test port for the lube pressure (18) Suction screen (AA) Pump supply oil (BB) Converter inlet oil (CC) Lubrication oil (DD) Tank oil | |
When the engine is running, oil pump (1) pulls oil from the reservoir through suction screen (17) to the pump. The oil pump sends the oil through filter (3) and to the control solenoid valves for the transmission clutches.
When the speed/direction control lever on the steering wheel column is moved to the FORWARD position and the FIRST speed position, the forward low solenoid valve is electrically activated. The electrical activation of the forward low solenoid overrides the centering spring. The spool will then move. Pressurized oil will be able to flow to the forward low direction clutch (10). Also, the solenoid for speed clutch 1 (11) is electrically activated. The activation of the solenoid for speed clutch 1 sends oil flow to speed clutch 1. The oil flows to the clutches in order to engage the clutches.
When the clutch packs obtain system operating pressure, the pressure regulator valve opens. The pressure regulator valve helps maintain system operating pressure to the clutch packs.
The pressure regulator valve will close while a clutch fills with oil. An orifice within the relief valve will permit the flow of oil to the torque converter (14) at low idle for lubrication and cooling purposes.
Torque converter inlet relief valve (13) controls maximum pressure to the torque converter in order to prevent damage during cold starts. Torque converter pressure is maintained in the torque converter by the restrictions that are created by the oil cooler and the oil lines that are leaving the torque converter.
When the switch for the all wheel drive is in the ON position, the all wheel drive solenoid is energized. Oil will flow through the solenoid valve for the all wheel drive. Pressurized oil will flow to the clutch pack for all wheel drive (5). The pressurized oil engages the clutch.
Run The Engine (First Speed Reverse)
 | |
| Illustration 9 | g00822074 |
All wheel drive in first speed reverse (1) Oil pump (2) Pump pressure tap (3) Oil filter with bypass (4) Autoshift electronic control module (5) All wheel drive clutch (If equipped) (6) Speed clutch 2 (7) Speed clutch 3 (8) Reverse clutch (9) Forward high clutch (10) Forward low clutch (11) Speed clutch 1 (12) System relief valve (13) Torque converter inlet relief valve (14) Torque converter (15) Pressure port for the torque converter outlet (16) Oil cooler bypass valve (17) Test port for the lube pressure (18) Suction screen (AA) Pump supply oil (BB) Converter inlet oil (CC) Lubrication oil (DD) Tank oil | |
When the engine is running, oil pump (1) pulls oil from the reservoir through suction screen (17) to the pump. The oil pump sends the oil through filter (3) and to the control solenoid valve for the transmission.
When the speed/direction control lever on the steering wheel column is moved to the REVERSE position and the FIRST speed position, the reverse solenoid of the solenoid valve is electrically activated. The electrical activation of the reverse solenoid overrides the centering spring. The spool will then move. Pressurized oil will be able to flow to the reverse direction clutch (8). Also, the solenoid for speed clutch 1 is electrically activated. The activation of the solenoid for speed clutch 1 sends oil flow to speed clutch 1 (11). The oil flows to the clutches in order to engage the clutches.
When the clutch packs obtain system operating pressure, the pressure regulator valve opens. The pressure regulator valve helps maintain system operating pressure to the clutch packs.
The pressure regulator valve will close while a clutch fills with oil. An orifice within the relief valve (14) will permit the flow of oil to the torque converter at low idle for lubrication and cooling purposes.
Torque converter inlet relief valve (13) controls maximum pressure to the torque converter in order to prevent damage during cold starts. Torque converter pressure is maintained in the torque converter by the restrictions that are created by the oil cooler and the oil lines that are leaving the torque converter.
When the switch for the all wheel drive is in the ON position, the all wheel drive solenoid is energized. Oil will flow through the solenoid valve for the all wheel drive to the clutch pack for all wheel drive (5). The pressurized oil engages the clutch.