Installation Instructions for the 301-6925 Joystick Control Gp (2-Function) and the 301-6926 Joystick Control Gp (3-Function) both with a transmission direction control switch{5063, 5705} Caterpillar

Wheel Loader:

938H (S/N: LKM1-UP)

Introduction

This service publication contains the installation information that is needed to convert to a joystick with a transmission direction control switch on a field machine.

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Personal injury or death can result from improper assembly procedures. Do not attempt any assembly until you have read and understand the assembly instructions.

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Personal injury or death can result from improper lifting or blocking. When a hoist or jack is used to lift any part or component, stand clear of the area. Be sure the hoist or jack has the correct capacity to lift a component. Install blocks or stands before performance of any work under a heavy component. Approximate weights of the components are shown. Clean all surfaces where parts are to be installed.

A complete listing of the parts that are contained in these kits is listed in the Parts Manual, SEBC1503. This supplemental product support literature should be used with the appropriate Service Manual that is available for the standard machine.

Do not perform any procedure and do not order parts that are outlined in this publication until you understand the information that is contained in this document.

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

Installation Instructions for the 301-6925 Joystick Control Gp (2-Function ) with a transmission direction control switch

Removal of the Standard Pilot Operated Hydraulic Control Group

1. Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".

2. Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "System Pressure - Release".

3. Put identification on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

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Illustration 1	g01456016

4. Remove the armrest and the bracket (B) .

5. Remove eight screws (C). Save the screws for later use.

6. Disconnect harness assemblies and set control panels (D) and (E) aside for reinstallation.

7. Remove the two rear mounting screws for the cover (F). Save the screws for later use.

8. Remove the two mounting screws that are under the front of the cover (F). Save the screws for later use.

9. Remove cover (F). Disconnect the harness connectors and set the cover (F) aside.

10. Remove cover (G) from the console assembly in order to access the hoses.

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Illustration 2	g01456167

11. Disconnect all hoses from the control valve (L) .

    Note: Put identification on all hoses for reinstallation. Plug all hoses. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

12. Remove four bolts (H) and four washers (J). Save the hardware for later use.

13. Remove support (K) .

14. Remove the control valve (L) .

Installation of the two Function Joystick Control Gp with a transmission direction control switch

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Illustration 3	g01456188

1. Use the original four bolts and a 4N-9170 Clip (7) to install the 261-8653 Pilot Valve Group (1) .

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Illustration 4	g01456207

2. Use the original screws and install the 262-4877 Cover As (2).

3. Reinstall the original armrest and bracket (B) .

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Illustration 5	g01456210

4. Use the original screws (C) and reinstall control panels (D) and (E) .

5. Install the 267-9414 Film (3) onto the 262-4877 Cover As (2) .

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Illustration 6	g01660813
Ports for the joystick (A) Lower (B) Rackback (C) Return (D) Raise (E) Supply (F) Dump

6. Connect hose assemblies (N). Hose assemblies (N) should be installed so that the red circular indicator that is located on the hose fitting is no longer visible.

7. Connect harness connectors.

8. Reinstall the cover onto the console assembly.

Installation Instructions for the 301-6926 Joystick Control Gp (3-Function ) with a transmission direction control switch

Removal of the Standard Pilot Operated Hydraulic Control Group

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

1. Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".

2. Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "System Pressure - Release".

3. Put identification on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

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Illustration 7	g01454621

4. Remove the armrest and the bracket (B) .

5. Remove eight screws (C). Save the screws for later use.

6. Disconnect harness assemblies and set control panels (D) and (E) aside for reinstallation.

7. Remove the two rear mounting screws for the cover (F). Save the screws for later use.

8. Remove the two mounting screws that are under the front of the cover (F). Save the screws for later use.

9. Remove cover (F). Disconnect the harness connectors and set the cover (F) aside.

10. Remove cover (G) from the console assembly in order to access the hoses.

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Illustration 8	g01455191

11. Disconnect all hoses from the control valve (L) .

    Note: Put identification on all hoses for reinstallation. Plug all hoses. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

12. Remove knob (M) and set the knob aside for later use.

13. Remove four bolts (H) and four washers (J). Save the hardware for later use.

14. Remove support (K) .

15. Remove the control valve (L) .

Installation of the three Function Joystick Control Gp with a transmission direction control switch

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Illustration 9	g01455794

1. Use the original four bolts and a 4N-9170 Clip (7) to install the 261-8655 Pilot Valve Group (1) .

2. Use a 096-6331 Nut (6) and install the 282-3820 Handle Control Gp (4) onto the 261-8655 Pilot Valve Group (1) .

3. Use a 096-6331 Nut (6) and install the 315-8297 Rod (5) onto the 261-8655 Pilot Valve Group (1) .

4. Install the knob (M) from the original valve group onto the 315-8297 Rod (5) .

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Illustration 10	g01455892

5. Use the original screws and install the 262-4878 Cover As (2).

6. Reinstall the original armrest and the bracket.

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Illustration 11	g01455895

7. Use the original screws (C) and reinstall control panels (D) and (E) .

8. Install the 267-9414 Film (3) onto the 262-4877 Cover As (2) .

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Illustration 12	g01660937
Ports for the joystick (A) Lower (B) Rackback (C) Return (D) Raise (E) Supply (F) Dump

9. Connect hose assemblies (N). Hose assemblies (N) should be installed so that the red circular indicator that is located on the hose fitting is no longer visible.

10. Connect harness connectors.

11. Reinstall the cover onto the console assembly.