CNH CX75C SR Midi Excavator Double-Acting Circuit Proportional Control Kit Instructions Manual

INSTALLATION INSTRUCTIONS

KG1AP093-00

DOUBLE-ACTING CIRCUIT PROPORTIONAL CONTROL KIT

APPROXIMATE INSTALLATION TIME: 25.0 hours

Tor - 47683006 Issue date March 2014 EN

KG1AP093-00 - DOUBLE-ACTING CIRCUIT PROPORTIONAL CONTROL KIT CASE CONSTRUCTION CX75C SR

Tor - 47683006 Issue date March 2014 EN

Contents 1 KIT CONTENT Kit content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2 PRE-ASSEMBLY PREPARING FOR ASSEMBLY Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3 ASSEMBLY DOUBLE - ACTING CIRCUIT PROPORTIONAL CONTROL KIT Installation of base boom seating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Installation of transverse boom seating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Boom line installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Upper main line installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 Pilot line installation - Proportional control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 Harness installation - proportion control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19 Attachment of plate inside cab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

EN

EN

1 - KIT CONTENT

1 - KIT CONTENT Kit content NOTE: Please refer to the Parts Manual for parts orders.

Control lever (right) Item 50

Description Knob (right) proportional control

Quantity 1

Part Reference KHJ28550

Quantity 2 2 1 1 2 1 3 1 2 1 1 1

Part Reference KEH0114 102R010Y050R KAJ17970 105R012Y025R KAJ5183 KAJ16930 KAR0017 KAJ18720 KAJ4876 KNJ1840 KHJ0602 KHJ1071

Double-acting main circuit (Refer to 3-8) Item 1 2 3 4 5 6 7 8 9 10 11 12

Description High-strength washer ( M10) High-strength bolt ( M10 X 50) Plate Sems bolt ( M12 X 25) Hose clamp Bracket Wire band (L = 380) Assembly hose Port relief valve Stud Elbow ( G1/2 x G3/4) Stud ( 1/2)

Double-acting pilot circuit proportional control (Refer to 3-14) Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Description Long elbow ( G1/4) Assembly hose Wire band (L = 250) Hose clamp Elbow ( G1/4) Stud with filter ( G1/4) Sems bolt ( M8 X 16) Hose adapter ( G1/4) Assembly hose Sems bolt ( M10 X 20) Pressure switch Bracket Reducing valve Tee ( G1/4)

Quantity 1 1 2 1 3 1 2 2 1 2 2 1 1 2

Part Reference KHJ1178 KAJ17040 KHH0142 KHJ2023 KHJ0348 KHJ25100 105R008Y016R KAJ3807 KAJ18770 105R010Y020R KHR21500 KHJ28770 MFJ71500 KHJ0869

Quantity 1 2 2 4 3 3

Part Reference KHR35680 KHR1317 105R008Y016R KHH0142 KHR0319 145N006S008R

Electrical part (Refer to 3-19) Item 1 2 3 4 5 6

Description Option (proportional control) wire harness Clip Sems bolt ( M8 X 16) Wire band (L = 250) Mount clamp Phillips pan head screw ( M6 X 8)

1-1 EN

1 - KIT CONTENT

Plate (Refer to 3-22) Item 33

Description Operation label (proportional control)

Quantity 1

Part Reference KHP21120

Quantity 1 6 1 2 4 2

Part Reference KAV20640 105R012Y060R KRC5007 KAV13950 KAV0791 105R012Y030R

Quantity 1 1 2 1 1 2 2

Part Reference KAV2205 KAV2206 KMJ2323 KAV20730 KAV20720 BRJ1286 KHJ0481

Quantity 1

Part Reference KAV2486

Quantity 3 1

Part Reference KAV10520 KAV2486

Clamp (Refer to 3-4) Item 7 8 9 10 11 12

Description Bracket Sems bolt ( M12 X 60) LOCTITE® Pipe clamp Pipe clamp Sems bolt ( M12 X 30)

Line (Refer to 3-4) Item 1 2 3 4 5 6 13

Description Line assembly Line assembly Hydraulic hose Line assembly (right base boom) Line assembly (left base boom) Plug ( G3/4) Plug ( G3/4)

Base boom seating (Refer to 3-1) Item 1

Description Seating

Transverse boom seating (Refer to 3-3) Item 1 2

Description Seating Seating

1-2 EN

2 - PRE-ASSEMBLY

2 - PRE-ASSEMBLY PREPARING FOR ASSEMBLY

Preparation An “*” in this document indicates that the part is mounted on the actual machine.

Items to prepare: • Wrenches ( 10 mm, 13 mm, 17 mm, 19 mm) • Hexagon wrench ( 8 mm) • Phillips screwdriver (No. 3) • Cutters, scissors • Rag 1. Position the main unit.

• Put the main unit on solid, level ground, put the bucket cylinder at its open stroke end, the arm cylinder at its out stroke end, lower the boom, and touch the arm top to the ground.

SMIL13II00106AA

1

SMIL13II00107AA

2

2. Switch the ignition key (a) “OFF”, check that the engine has stopped, and then switch the ignition key “ON” again. (Do not start the engine.)

2-1 EN

2 - PRE-ASSEMBLY

3. Bleed out the pressure inside the circuit.

• Flip the lever (c) forward, and then turn the upper operation lever (b) about 10 times to bleed out the pressure.

• Move the travel lever (d) back and forth about 5 times to bleed out the pressure.

SMIL13II00108BA

3

SMIL13II00109AA

4

4. Bleed out the pressure from inside the hydraulic tank.

• Press the air breather button (e) on top of the hydraulic tank to release the pressure inside the tank.

2-2 EN

3 - ASSEMBLY

3 - ASSEMBLY DOUBLE - ACTING CIRCUIT PROPORTIONAL CONTROL KIT

Installation of base boom seating

SMIL14II00005GB

1

3-1 EN

3 - ASSEMBLY

1. Install the 2 seatings (1) on the boom.

• Seal the locations indicated with a.

• Do not weld over the widths indicated with b.

SMIL14II00006BB

2

3-2 EN

3 - ASSEMBLY

Installation of transverse boom seating

SMIL14II00007FB

1

1. Install the 3 seatings (1) on the boom.

• Seal the locations indicated with a.

• Do not weld over the widths indicated with b (both sides).

SMIL14II00008AB

2

3-3 EN

3 - ASSEMBLY

Boom line installation

SMIL14II00009GA

1

1. Set the line assembly (right) (6) and line assembly (left) (7).

SMIL14II00010AB

2

3-4 EN

3 - ASSEMBLY

2. Sandwich the line assembly (left) (7) with 2 pipe clamps (16), and then fasten with 2 sems bolts (15).

• Fasten the pipe clamp (16) at a position 105 mm (4.13 in) from the end of the line assembly (left) (7).

Remove the line assembly (right) (6) with the same procedure.

SMIL14II00011AB

3

SMIL14II00012AB

4

SMIL14II00013BB

5

3. Sandwich the line assembly (right) (6) and line assembly (left) (7) with 2 pipe clamps (14), and then fasten with 2 sems bolts (15).

4. Set the line assembly (right) (9) and line assembly (left) (10).

Fasten the line assembly (right) (9) and line assembly (left) (10) at 2 locations with 1 pipe clamp (13) each and 1 sems bolt (1) each, and then install the 2 plugs (11).

• Fasten the pipe clamps (13) at positions 100 mm (3.94 in) from the end of the line assembly (right) (9) and the line assembly (left) (10).

3-5 EN

3 - ASSEMBLY

5. Set 1 O-ring (17) each on the line assembly (right) (6) and line assembly (right) (9), and then connect with the hydraulic hose (8).

Set 1 O-ring (17) each on the line assembly (left) (7) and line assembly (left) (10), and then connect with the hydraulic hose (8).

SMIL14II00014BB

6

SMIL14II00015BB

7

6. Set 1 O-ring (17) each on the line assembly (right) (9) and hose adapter (19), and then connect with the hydraulic hose (12).

• Fasten the hydraulic hose (12) on the bracket (*1) with the hose adapter (19).

Set 1 O-ring (17) each on the line assembly (left) (10) and hose adapter (19), and then connect with the hydraulic hose (12).

• Fasten the hydraulic hose (12) on the bracket (*1) with the hose adapter (19).

3-6 EN

3 - ASSEMBLY

7. Connect the line assembly (left) (7) with the hydraulic hose (*2).

Install the bracket (5) on the boom with the sems bolt (15).

Fasten the hydraulic hose (*2) to the bracket (5) with the hose clamp (4) and clamp (3), sems bolt (1), highstrength bolt (2), and high-strength washer (18).

8. Install on the right side with the same procedure.

SMIL14II00016BB

8

3-7 EN

3 - ASSEMBLY

Upper main line installation

SMIL14II00017GB

1

*1: Control valve

3-8 EN

3 - ASSEMBLY

1. Install the bracket (6) on the control valve (*1) with 2 high-strength bolts (2) and 2 high-strength washers (1).

SMIL14II00018BB

2

3-9 EN

3 - ASSEMBLY

2. Install the stud (10) on the control valve (*1) B2 port and connect the assembly hose (8/Y1). a: about 55 ° b: about 50 °

SMIL14II00019CB

3

SMIL14II00020AB

4

3. Connect the assembly hose (8/Y1) to the line (*2).

3-10 EN

3 - ASSEMBLY

4. Install the stud (12) on the control valve (*1) A2 port.

Install the elbow (11) on the control valve (*1) A2 port and connect the assembly hose (8/Y2). a: about 55 ° b: about 50 °

SMIL14II00021CB

5

SMIL14II00020AB

6

5. Connect the assembly hose (8/Y2) to the line (*3).

3-11 EN

3 - ASSEMBLY

6. Remove the plug at the option port section on the control valve (*1), and then install the 2 port relief valves (9).

• Tightening torque: 59 - 69 N·m (43.5 - 50.9 lb ft)

SMIL14II00022BB

7

3-12 EN

3 - ASSEMBLY

7. Sandwich the assembly hose (8/Y1) and assembly hose (8/Y2) with 2 hose clamps (5), and fasten to the bracket (6) with the plate (3) and sems bolt (4).

• Fasten so that the distance (L) between the front ends of the assembly hoses (8/Y1) (8/Y2) and hose clamp (*4) is 1410 mm (55.51 in).

SMIL14II00023CB

8

SMIL14II00024AB

9

8. Fasten the assembly hose (8/Y1) and assembly hose (8/Y2) with 3 wire bands (7).

3-13 EN

3 - ASSEMBLY

Pilot line installation - Proportional control

SMIL14II00025FB

1

SMIL14II00026FB

2

3-14 EN

3 - ASSEMBLY

a. b. *1.

Hose assembly Code Control valve

*2. *3.

Manifold Reducing valve

1. Install the reducing valve (13) on the bracket (12) with 2 sems bolts (7).

Install the bracket (12) on the floor (*4) with 2 sems bolts (10).

Install the hose adapters (8) on the reducing valve (13) A1 port and A2 port.

• Tightening torque: 25.4 - 31.4 N·m (18.7 - 23.2 lb ft) Install the pressure switches (11) on the reducing valve (13) A1 port and A2 port.

• Tightening torque: 25.4 - 31.4 N·m (18.7 - 23.2 lb ft) a: about 40 °

SMIL14II00027CB

3

3-15 EN

3 - ASSEMBLY

2. Install the long elbow (1) on the control valve (*1) Pa2 port.

Connect the reducing valve (13) A1 port and control valve (*1) Pa2 port with the assembly hose (2/Y2).

• Fasten the assembly hose (2/Y2) and pilot control line together with the wire band (3).

SMIL14II00028BB

4

SMIL14II00029BB

5

3. Install the elbow (5) on the control valve (*1) Pb2 port.

Connect the reducing valve (13) A2 port and control valve (*1) Pa2 port with the assembly hose (2/Y1).

• Fasten the wire band (3) together with the assembly hose (2/Y1) and pilot control line.

3-16 EN

3 - ASSEMBLY

4. Install the elbow (5) on the reducing valve (13) T port.

• Tightening torque: 25.4 - 31.4 N·m (18.7 - 23.2 lb ft)

SMIL14II00030BB

6

SMIL14II00031AB

7

5. Install the tee (14) on the manifold (*2) T5 port.

Connect the reducing valve (13) T port and manifold (*2) T5 port with the assembly hose (9/T5).

• Tightening torque: 25.4 - 31.4 N·m (18.7 - 23.2 lb ft)

3-17 EN

3 - ASSEMBLY

6. Install the stud with filter (6) and elbow (5) on the reducing valve (13) P port.

• Tightening torque: 25.4 - 31.4 N·m (18.7 - 23.2 lb ft)

SMIL14II00030BB

8

SMIL14II00032BB

9

7. Install the tee (14) on the manifold (*2) P5 port.

Connect the reducing valve (13) P port and manifold (*2) P5 port with the assembly hose (9/P5).

• Fasten the wire band (3) together with the assembly hose (9/P5) and assembly hose (9/T5).

3-18 EN

3 - ASSEMBLY

Harness installation - proportion control

SMIL14II00033FB

1

SMIL14II00034FB

2

3-19 EN

3 - ASSEMBLY

* The quantity of parts varies depending on the specifications.

1. For double-acting circuit, connect the wire harness (1) and the reducing valve (*1) as shown in the diagram.

• The ID tape (*2) is a red tape and (*3) is a blue tape.

Fasten the 2 couplers on the wire harness with 1 clip (2) each and 1 sems bolt (3) each.

SMIL14II00035AB

3

SMIL14II00036AB

4

SMIL14II00037BB

5

2. For breaker circuit, connect the wire harness (1) and the reducing valve (*1) as shown in the diagram.

• The ID tape (*2) is a red tape and (*3) is a blue tape.

Fasten the 2 couplers on the wire harness with 1 clip (2) each and 1 sems bolt (3) each.

3. When the kit comes with a screw cap, install the screw cap (7) on the floor.

3-20 EN

3 - ASSEMBLY

4. Route the wire harness (1) as shown in the diagram.

Fasten the wire harness (1) at 3 locations with 1 wire band (4) each, 1 mount clamp (5) each, and 1 Phillips pan head screw (6) each.

SMIL14II00038BB

6

SMIL14II00039AB

7

5. Extend the wire harness (1) to the floor side from under the cab.

Connect the wire harness (1) connector (16-pin) to the cab main harness (*4).

3-21 EN

3 - ASSEMBLY

Attachment of plate inside cab

SMIL14II00040GB

1

1. Wipe off any dirt from the location where the label will be attached.

2. Attach the operation label (proportional control) (33).

3-22 EN

Index ###_Index_###

A Attachment of plate inside cab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22 B Boom line installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4

H Harness installation - proportion control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19 I Installation of base boom seating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation of transverse boom seating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1 3-3

K Kit content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

P Pilot line installation - Proportional control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 U Upper main line installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-8

EN

SERVICE - Technical Publications & Tools

© 2014 CNH Industrial Italia S.p.A. All rights reserved. No part of the text or illustrations of this publication may be reproduced.

CNH policy is one of continuous improvement and the right to change prices, specification or equipment at any time without notices is reserved.

All data given in this publication is subject to production variations. Dimensions and weight are approximate only and the illustrations do not necessarily show products in standard condition. For exact information about any particular product, please consult your CNH Dealer.

CNH Italia S.p.A. viale delle Nazioni, 55 Modena Italy 41122 EN