992K Wheel Loader and 854K Wheel Dozer Braking System Caterpillar

The software program that will be used for this test procedure is the Caterpillar Electronic Technician (ET). The Caterpillar Electronic Technician is a software program that can be used on an IBM-compatible personal computer.

1. Connect the laptop computer to the service connector in the cab.
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   Illustration 1	g01443847
   Typical example of ET menu

2. Open the software program (ET). Select the engine ECM from the "ECM Selector" menu.
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   Illustration 2	g01261520
   Typical example of ET menu

3. Select the "Information" menu item from the toolbar. Select the "Status" menu item.
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   Illustration 3	g01148913
   Location for the shim

4. Place a 1.55 mm (0.062 inch) shim between the pedal stop and the right-hand brake pedal.
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   Illustration 4	g01261612
   Typical example of ET menu "Depressed" status of the brake pedal

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   Illustration 5	g01261615
   Typical example of ET menu "Released" status of the brake pedal

5. Select "Throttle Lock" in ET. If "Depressed" appears in the "Brake Pedal" row under the "Value" column, proceed to Step 10. If "Released" appears, proceed to Step 6.
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   Illustration 6	g06221959
   (1) Limit switch for throttle lock deactivation (2) Adjustment plate (3) Adjustment screw

6. Remove the three screws from the cover plate on the right-hand brake pedal switch in order to access adjustment screw (3).

7. Place a 1.55 mm (0.062 inch) shim between the pedal stop and the right-hand brake pedal.

8. Loosen adjustment screw (3). Adjust adjustment plate (2) until "Depressed" appears in the "Brake Pedal" row under the "Value" column in ET. Then, torque adjustment screw (3) to 1.4 ± 0.3 N·m (12 ± 3 lb in).

9. Remove the shim from the pedal stop.

10. Place a 0.775 mm (0.031 inch) shim between the pedal stop and the right-hand brake pedal.

11. Verify "Released" appears in the "Brake Pedal" row under the "Value" column in ET. If "Released" now appears, proceed to Step 12. If "Released" does not appear, repeat Step 6 through Step 10.

12. Remove the shim from the pedal stop.

13. If the cover plate was removed, replace the cover plate with the three screws.