SE

NR

1213-0

2

©1999 CaterpillarAll Rights Reserved

Printed in U.S.A.

SENR1213-02January 1999

416C, 426C & 436C

Hydraulic & Steering Systems416C5YN1-UP4ZN1-UP1AR1-UP1BR1-UP1KR1-UP1LR1-UP1WR1-UP1XE1-UP

426C6XN1-UP7WN1-UP1CR1-UP1ER1-UP1MR1-UP1NR1-UP1YR1-UP1ZR1-UP

436C8TN1-UP9JN1-UP1FR1-UP1GR1-UP1PR1-UP1RR1-UP2AR1-UP2BR1-UP

Backhoe Loaders

SE

NR

1213-0

2

1 2 4 5 6 7 8

9 10

1113 14 15 16 17 18

19202122232425

26

27

28

29

30

313233

34

37

38

3940

42

41

43

44

45

36

35

Component

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Item No.

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

Hydraulic Schematic - Single Tilt

Front Steering Cylinder

AWS Brake Control Valve

Multipurpose Bucket Cylinder (Optional)

AWS Rear Axle Brakes

Loader Valve Group

Auxillary Control Valve (Optional)

Lines to Auxillary Cylinders (Optional)

Auxillary Control Valve (Optional)

Boom Cylinder

Backhoe Bucket Cylinder

Extendible Stick Bucket Cylinder (Optional)

Stick Cylinder

Extendible Stick Cylinder (Optional)

Extendible Stick Control Valve (Optional)

Stick Control Valve

Bucket Control Valve

Swing Control Valve

Boom Control Valve

Tilt Control Valve

Lift Control Valve

AWS 3 Bank Valve (Optional)

AWS Inlet Manifold and Steering Priority Valve Group

2WS 3 Bank Valve (Optional)

2WS Inlet Manifold and Steering Priority Valve Group

Hydraulic Oil Tank

Hydraulic Oil Cooler

AWS Oil Pressure Switch

37

38

39

40

41

42

43

44

45

46

Lift Cylinders

AWS Rear Steering Cylinder (Optional)

Ride Control Accumulator (Optional)

Ride Control Solenoid Valve (Optional)

Tilt Cylinder

AWS Brake Reservoir Tank Group

Return Line Hydraulic Oil Filter

Check Valve

'A'

'B'

11 12

1315 16 17 18 19 20

21222324252627

Component

1

2

3

4

5

6

7

8

Item No.

Front Steering Cylinder

Left Stabilizer Control Valve

27

26

25

24

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

28

29

30

31

32

33

Hydraulic Schematic - Parallel Lift

Multipurpose Bucket Cylinders (Optional)

Broom Motor (Optional)

Manual Shut Off Valve (Optional)

Loader Valve Group

Auxillary Control Valve (Optional)

Lines to Auxillary Cylinders (Optional)

Auxillary Control Valve (Optional)

Boom Cylinder

Left Stabilizer Cylinder and Check Valve

Right stabilizer Cylinder and Check Valve

Backhoe Bucket Cylinder

Extendible Stick Bucket Cylinder (Optional)

Stick Cylinder

Extendible Stick Cylinder (Optional)

Extendible Stick Control Valve (Optional)

Stick Control Valve

Bucket Control Valve

Right Stabilizer Control Valve

Swing Control Valve

Boom Control Valve

AWS Rear Axle Brakes

AWS Brake Reservoir Tank Group

AWS Brake Control Valve

AWS 3 Bank Valve (Optional)

AWS Inlet Manifold and Steering Priority Valve Group

2WS 3 Bank Valve (Optional)

34

Hydraulic Oil Tank

Hydraulic Oil Cooler

AWS Oil Pressure Switch

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

Lift Control Valve

Tilt Control Valve

Ride control Pressure Switch

Lift Cylinders

AWS Rear Steering Cylinder (Optional)

Ride Control Solenoid Valve (Optional)

Ride Control Accumulator (Optional)

AWS Valve Assembly

Tilt Cylinders

Return Line Hydraulic Oil Filter

Single Tilt

Parallel Lift

Left Stabilizing Cylinder and Check Valve

Right Stabilizing Cylinder and Check Valve

Right Stabilizer Control Valve

Left Stabilizer Control Valve

AWS Steering Valve and Mounting Group

AWS Valve Assembly

2WS Inlet Manifold and Steering Priority Valve Group

1

5

4234

2

3

4

33

44357

8

10

26

27

28

29

30

31

19

20

21

22

23

24

25

17

9

18

1516

11

13

12

39

46

645

38

43

32

43

36

40

41

37

1

4

5

6

7

8

37482

3

3029

36

389

10

31

32

33

34

39

40

12

21

22

23

24

25

26

27

19

11

20

17

18

8

14

15

4628

49

4335

47

41

44

45

42

Coupler Valve and Mounting Group (Optional)

AWS Steering Valve and Mounting Group (Optional)

Ride Control Pressure Switch (Optional)

2WS Steering Metering Pump

12Swing Cylinders

Piston Type Hydraulic Pump

Pin Coupler Cylinder (Optional)

Piston Type Hydraulic Pump

A

B

14Swing Cylinders

PLS

T

PLS

T

1

4 5

6

7

8

9

10

40

39

4847

46

4544

42

43

49

41

3736

35 34

33

3231

30

29

28

47

48

49

51

52

50

38

47

48

49

Orifice Diameter 1.5 mm (0.06 in)

Orifice Diameter 0.4 mm (0.02 in)

Orifice Diameter 1.2 mm (0.05 in)

51

52

50 Orifice Diameter 1.5 mm (0.06 in)

Orifice Diameter 0.4 mm (0.02 in)

Orifice Diameter 1.2 mm (0.05 in)

2

2WS Steering Metering Pump

AWS Steering Metering Pump

AWS Steering Metering Pump

3

L R

LS T P

3

L R

LS T P

46

53 Check Valve

A Fluid from AWS brake valve to AWS steering valve

B Signal from AWS brake reservoir to AWS steering valve

53