351-1343 Parking Brake Control Gp (Automatic) Custom Product Support Literature for the R1300G Load Haul Dump{1408, 4250} Caterpillar

Load Haul Dump:

R1300G (S/N: LJB1454-UP; NJB1-UP)

Introduction

This publication contains the information for the installation of an automatic parking brake application system. This supplemental product support literature should be used with the appropriate Service Manual and the appropriate Parts Manual that is available for this standard machine.

Until the information that is contained in this document is understood, do not:

• Perform any procedure that is outlined in this publication

• Order parts that are outlined in this publication

Note: The optional ABA Transmission Switch Group must be installed with the Automatic Parking Brake system if not already installed on the machine. If the optional ABA Transmission Switch Group is not installed, stopping the engine or stalling the engine will not automatically engage the parking brake.

ReferenceSystems Operation Testing and Adjusting, RENR6937, "R1300G Load Haul Dump Braking System", "System Pressure - Release". This module is part of Service Manual, RENR6923 Volume 2.

ReferenceSystems Operation Testing and Adjusting, RENR6937, "R1300G Load Haul Dump Braking System", "Braking System Air-Purge". This module is part of Service Manual, RENR6923 Volume 2.

ReferenceOperation and Maintenance Manual, SEBU7329, "R1300G Load Haul Dump", "Towing Information". This manual is part of Service Manual, RENR6923 Volume 2.

Installation of the Pressure Switch

1. Move the machine to a hard, level location, that is away from operating machines and away from personnel.

2. Install the steering frame lock.

3. Lower the bucket to the ground.

4. Engage the parking brake.

5. Turn the battery disconnect switch to the OFF position.

6. Release the brake system pressure. Refer to Systems Operation Testing and Adjusting, RENR6937, "R1300G Load Haul Dump Braking System", "System Pressure - Release".

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Illustration 1	g01092907
Typical example.

7. Remove cover (1) from the operator station.

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Illustration 2	g01092908
Typical example.

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Illustration 3	g01092911
Typical example.

8. Pull up lever (2) located on the right side of suspension seat (3) .

9. Holding lever (2) upward, slide suspension seat (3) forward off suspension seat base (5). Remove suspension seat (3) .

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Illustration 4	g01093274

10. Remove cover (4) and cover (6). Refer to Illustration 3 and Illustration 4.

Machines without Brake Pressure Gauges Installed

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Illustration 5	g02730766
Typical example

1. Remove 9S-4182 Plug (7) from 242-1941 Manifold (8). Discard 9S-4182 Plug (7) .

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Illustration 6	g02730770
Typical example

2. Install 3J-7354 O-Ring Seal (11) and 8T-2353 Adapter (12) .

3. Install 3J-1907 O-Ring Seal (9) and 183-5035 Pressure Switch (10) .

4. Install 351-1342 Brake Harness As . Refer to ""Installation of the Wiring Harness" ".

Machines with Brake Pressure Gauges Installed

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Illustration 7	g02730772
Typical example

1. Remove 9S-4182 Plug (13) from 242-1941 Manifold (14). Discard 9S-4182 Plug (13) .

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Illustration 8	g02730780
Typical example

2. Install 3J-7354 O-Ring Seal (17) and 8T-2353 Adapter (18) .

3. Install 3J-1907 O-Ring Seal (15) and 183-5035 Pressure Switch (16) .

4. Install 351-1342 Brake Harness As . Refer to ""Installation of the Wiring Harness" ".

Installation of the Wiring Harness

Note: Install the wiring. Refer to the electrical schematic. Refer to Illustration 11. Install all harnesses securely by using the cable ties listed in Table 1.

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Illustration 9	g02731371
View of the electronic transmission control with the 351-1343 Parking Brake Control Gp installed

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Illustration 10	g02731372
Typical view of the lines group (lower) with the 183-5035 Pressure Switch installed

1. Install wire EL709 from 351-1342 Brake Harness As (19) into pin 11 of Electronic Transmission Control J2 plug (21) .

2. Connect earth wire 202-BK from 351-1342 Brake Harness As (19) at location (A) .

3. Route 351-1342 Brake Harness As (19) from Electronic Transmission Control J2 plug (21). Follow the existing lower cab part B harness (20) to the 183-5035 Pressure Switch (24) .

4. Connect 2-pin plug (23) from 351-1342 Brake Harness As (19) to the 183-5035 Pressure Switch receptacle (22) .

5. Install cover (6) .

6. Install suspension seat (3) .

7. Install cover (1) .

Installation of the Software

1. Turn the battery disconnect switch to the ON position.

2. Use Caterpillar Winflash (Electronic Technician) to flash the Software-Gp into the Electronic Transmission Control.

   Note: The new software is available in the form of a flash file from Cat Underground Mining through the "Dealer Solution Network" (DSN). Reference Custom Service Information, REHS5257 in the service request.

3. Cycle the battery disconnect switch to the OFF position and back to the ON position.

4. Purge the air from the braking system. Refer to Systems Operation Testing and Adjusting, RENR6937, "R1300G Load Haul Dump Braking System", "Braking System Air-Purge".

5. Check that the Automatic Parking Brake system operates correctly. Refer to ""Automatic Parking Brake System Operation" ".

Electrical System Schematic

Illustration 11	g02731910
View of the automatic parking brake system electrical schematic

Automatic Parking Brake System Operation

A Load Haul Dump machine equipped with the automatic parking brake system will automatically engage the parking brake under certain conditions. The system uses the Electronic Transmission Control to detect when all the following conditions are active for 3 seconds or more:

• Parking brake disengaged.

• Remote control switch is in the OFF position (if equipped).

• Ground speed is less than 5 km/h (3.1 mph).

• Engine rpm is between 550 rpm and 800 rpm.

• Neutralizer pedal released (foot off pedal).

• Service brake pedal released (foot off pedal).

When all the above conditions are continuously active for 3 seconds or more, the parking brake will automatically engage.

If the parking brake is automatically engaged, disengage the parking brake by cycling the parking brake switch from the OFF position to the ON position. Cycle back to the OFF position.

Note: The optional ABA Transmission Switch Group must be installed with the Automatic Parking Brake system if not already installed on the machine. If the optional ABA Transmission Switch Group is not installed, stopping the engine or stalling the engine would not automatically engage the parking brake.

Towing the Machine

The procedure for towing the Load Haul Dump machine is unaffected when the engine is not running. Refer to Operation and Maintenance Manual, SEBU7329, "R1300G Load Haul Dump", "Towing Information". When towing the machine with the engine running, adhere to at least two of the following conditions to prevent the parking brake from automatically engaging:

• Parking brake disengaged

• Maintain the engine rpm above 800 rpm