Procedure to Replace the Water Valve for the Climate Control System{7309, 7320} Caterpillar

Procedure to Replace the Water Valve for the Climate Control System{7309, 7320}

Usage:

D10R 3KR

Track-Type Tractor:: D10R (S/N: 3KR1-UP; AKT1-UP); D11R (S/N: AAF1-UP; 8ZR1-UP; 9TR1-UP; 9XR1-UP; 7PZ1-UP)

Introduction

This special instruction provides the procedure to replace the 210-7291 Valve As with the 239-0622 Valve As in the climate control system. The new valve increases reliability and service life.

After the modifications have been made, prepare the machine for service. Follow the procedures in the Operation and Maintenance Manual for your machine.

Do not attempt any procedure until you have read all of the information in this special instruction and you understand the information.

Note: For an electrical schematic of the water valve, refer to Schematic, RENR2047 for the D11R and D11R CD and refer to Schematic, RENR8195 for the D10R.

Necessary Parts

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Table 1
Necessary Parts
Item	Part Number	Description	Qty
1	239-3047	Bracket As	1
2	239-0622	Valve As	1
3	9X-2185	Screw	4
4	9X-2042	Screw	4
5	4P-7581	Clip	1
6	136-1953	Hose	250 mm (9.8 inch)
7	136-1953	Hose	300 mm (11.8 inch)
8	3S-2093	Cable Strap	6
9	240-3306	Harness As	1
10	240-3307	Harness As	1
11	239-9368	Resistor	1

Procedure

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Illustration 1	g01008465

Remove the bolts (A) and access cover (B) for the conditioner on the left side of the machine.

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Illustration 2	g01008439

Disconnect harness (C) that is leading to the water valve and remove the harness.

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Illustration 3	g01008447

Loosen bolts (D), but do not remove the bolts. This will ease the removal of the water valve.

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Illustration 4	g01008448

Remove the water valve, the control assembly and the heater hoses.

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Illustration 5	g01008453

Attach hose (6) to valve assembly (2). Secure the hose with a hose clamp. Tighten the clamp to a torque of 4.5 N·m (40 lb in).
Attach valve assembly (2) to bracket assembly (1) with screws (3).

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Illustration 6	g01008454

Attach hose (7) to the heater coil. Secure the hose with a hose clamp. Tighten the clamp to a torque of 4.5 N·m (40 lb in).

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Illustration 7	g01008457
Slide valve assembly (2) in the right side of air conditioner.

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Illustration 8	g01008458
Position the valve assembly.

Refer to Illustration 7 and 8 in order to position valve assembly (2) .

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Illustration 9	g01008461

Secure the second end of hose (6) to the bulk head on the case. Secure the hose with a hose clamp. Tighten the clamp to a torque of 4.5 N·m (40 lb in).

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Illustration 10	g01008463

Secure bracket (1) to the case with four screws (4). Tighten the screws to a torque of 12 N·m (9 lb ft).

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Illustration 11	g01008464

Attach the second end of hose (7) to valve assembly (2). Secure the hose with a hose clamp. Tighten the clamp to a torque of 4.5 N·m (40 lb in).

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Illustration 12	g01008468

Secure hose (7) with existing clip (E) to the case with existing washer and locknut. Tighten the locknut to a torque of 12 N·m (9 lb ft).

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Illustration 13	g01008471
(9) Harness (11) Resistor

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Illustration 14	g01008472

Plug resistor (11) into harness (9). Install harness (9) in place of the former control assembly.
Use the existing clip and clip (5) with cable straps (8) in order to secure harness (9) .

Tighten two bolts (D) from Step 3.

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Illustration 15	g01008478

Remove three bolts (F) from the right console in the cab.

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Illustration 16	g01008480

Remove two bolts (G) that hold the heating control.

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Illustration 17	g01008485
(10) Harness

Remove the wires (592 PU) from pin 5 of each of the DT connectors in order to route the harness.

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Illustration 18	g01008484

Disconnect the potentiometer for the water valve. Insert the first portion of harness (10) between the existing harness and the potentiometer.

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Illustration 19	g01008494

Feed the free end of harness (10) through the duct and through grommet (H) under the right console.

Refer to the Disassembly and Assembly Manual for your machine in order to remove the floorplate.

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Illustration 20	g01008499

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Illustration 21	g01008501

The wires (592 PU) were removed from the DT connectors in Step 16. Pull the wires (592 PU) under the cab. Install a wire (592 PU) into pin 5 of each of the DT connectors. Insert wedges (J) in order to complete the harness.

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Illustration 22	g01008517

Disconnect the existing six-pin connector from power converter (K) in the right console. Insert the second portion of harness (10) between the existing six-pin connector and power converter (K) .
Note: If the converter does not have a Deutsche DT connector, the connector on harness (10) must be replaced or the power converter must be replaced.

Check for proper operation of the water valve. Secure all of the harnesses with cable straps, as needed. Replace the floorplate. Reassemble the right console.
Note: If additional radios have been added to the cab, the power converter may become overloaded. A new 159-1549 Power Converter that is suitable for higher current may be required for proper operation.