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| Illustration 1 | g02442517 |
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(S/N: TJA1-452) (S/N: TAN1-447) (1) Ripper lift cylinders (2) Ripper tip cylinders (3) Control valve group for the ripper (4) Ripper lift control valve (5) Ripper tip control valve (6) Rear implement connection point (7) Control valve group for the bulldozer (8) Bulldozer tilt control valve (9) Bulldozer lift control valve (10) Main relief valve (11) Charging valve (12) Bulldozer lift cylinder (13) Bulldozer tilt cylinder (14) Implement pump (15) Fan pump (16) Charge pump for the steering circuit and pilot pump (17) Blade control lever (18) Ripper control lever (19) Hydraulic tank and filters | |
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| Illustration 2 | g02852799 |
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(S/N: TJA453-UP) (S/N: TAN448-UP) (1) Ripper lift cylinders (2) Ripper tip cylinders (3) Control valve group for the ripper (4) Ripper lift control valve (5) Ripper tip control valve (6) Rear implement connection point (7) Control valve group for the bulldozer (8) Bulldozer tilt control valve (9) Bulldozer lift control valve (10) Main relief valve (11) Charging valve (12) Bulldozer lift cylinder (13) Bulldozer tilt cylinder (14) Implement pump (15) Fan pump (16) Charge pump for the steering circuit and pilot pump (17) Blade control lever (18) Ripper control lever (19) Hydraulic tank and filters | |
Movement of the blade and of the ripper is controlled by valves that regulate the flow of oil to the hydraulic cylinders. The implement control valves are mounted together in control valve groups.
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| Illustration 3 | g01393493 |
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(1) Ripper lift cylinders
(2) Ripper tip cylinders (3) Control valve group for the ripper (4) Ripper lift control valve (5) Ripper tip control valve (6) Rear implement connection point | |
The control valve group for the ripper (3) is mounted externally onto the rear of the tractor main frame. Hydraulic hoses connect the control valve group to the rear implement connection point (6) on the rear of the tractor.
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| Illustration 4 | g02038986 |
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View of the rear implement connection point on the rear of the tractor | |
A hydraulic jumper tube is installed on the rear implement connection point (6) when a machine has no rear attachments. The hydraulic jumper tube is used to allow the signal oil in the resolver network to drain to the tank when the lift or tip control valves are in the centered position. If the hydraulic jumper is not in place, the load sensing signal oil will become trapped in the resolver network. The trapped oil causes the implement pump to upstroke.
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| Illustration 5 | g02442619 |
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(7) Control valve group for the dozer
(8) Bulldozer tilt control valve (9) Bulldozer lift control valve (10) Main relief valve (11) Charging valve | |
The control valve group for the dozer (7) is mounted under the hood near the front of the tractor.
The control valve group contains four valves: bulldozer tilt control valve (8), bulldozer lift control valve (9), main relief valve (10) and charging valve (11). Main relief valve (10) prevents pressure spikes in the hydraulic system. The control valves are activated by a proportional solenoid valve on each end of the valve spool. Charging valve (11) maintains pressure in the system after the control valves in order to reduce voiding in the lift cylinders.
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| Illustration 6 | g02442676 |
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(12) Lift cylinder
(13) Tilt cylinder | |
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| Illustration 7 | g02832557 |
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(1) Ripper lift cylinders
(2) Ripper tip cylinders (3) Control valve group for the ripper (4) Ripper lift control valve (5) Ripper tip control valve (6) Rear implement connection point | |
The control valve group for the ripper (3) is mounted externally onto the rear of the tractor main frame. Hydraulic hoses connect the control valve group to the rear implement connection point (6) on the rear of the tractor.
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| Illustration 8 | g02038986 |
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View of the rear implement connection point on the rear of the tractor | |
A hydraulic jumper tube is installed on the rear implement connection point (6) when a machine has no rear attachments. The hydraulic jumper tube is used to allow the signal oil in the resolver network to drain to the tank when the lift or tip control valves are in the centered position. If the hydraulic jumper is not in place, the load sensing signal oil will become trapped in the resolver network.
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| Illustration 9 | g02442619 |
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(7) Control valve group for the dozer
(8) Bulldozer tilt control valve (9) Bulldozer lift control valve (10) Main relief valve (11) Charging valve | |
The control valve group for the dozer (7) is mounted under the hood near the front of the tractor.
The control valve group contains four valves: bulldozer tilt control valve (8), bulldozer lift control valve (9), main relief valve (10) and charging valve (11). Main relief valve (10) prevents pressure spikes in the hydraulic system. The control valves are activated by a proportional solenoid valve on each end of the valve spool. Charging valve (11) maintains pressure in the system after the control valves in order to reduce voiding in the lift cylinders.
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| Illustration 10 | g02442676 |
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(12) Lift cylinder
(13) Tilt cylinder | |
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| Illustration 11 | g02442706 |
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(14) Implement pump
(15) Fan pump (16) Charge pump for the steering circuit and pilot | |
Hydraulic implement pump (14) is a variable displacement axial piston pump. The implement pump is also load sensing and pressure compensated. The pump provides the oil flow for the implement hydraulics. The oil is then available to activate the implements when the operator moves the implement control lever.
Implement pump (14) is mounted to the upper left portion of the engine flywheel housing.
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| Illustration 12 | g01698194 |
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Rear view (17) Bulldozer control (18) Ripper control | |
Blade control lever (17) controls the movement of the blade.
Blade control lever (17) is located on the right console of the operator station.
Ripper control lever (18) controls the movement of the ripper (if equipped).
Ripper control lever (18) is located to the rear of the blade control lever on the right console of the operator station.
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| Illustration 13 | g02442717 |
| (19) Hydraulic tank and filters | |
Hydraulic oil tank (19) is a reservoir that contains the hydraulic oil for the entire hydraulic system. A screen in the hydraulic tank prevents debris in the oil that returns from the implement control valves from damaging hydraulic system components.
Hydraulic oil tank (19) is located on the left fender just in front of the fuel tank.