CB1.7 Utility Compactor Propel Systems Caterpillar

Reverse Switch - Test

Usage:

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Engine exhaust contains products of combustion which may be harmful to your health. Always start and operate the engine in a well ventilated area and, if in an enclosed area, vent the exhaust to the outside.

Specifications

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Table 1
Machine Test Parameters
Date	Product or Component SN
Measurement Location	Measurement	Actual
Hydraulic oil temperature for test	50 °C (122 °F)

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Table 2
Reverse Switch Specifications
Date	Product or Component SN
Condition	Status	Actual
Switch state with propel lever in the forward position or in the neutral position	Open
Switch state with propel lever in the reverse position	Closed

Introduction

Note: If the machine moves in reverse before the back-up alarm begins to operate, replace the propel handle.

This procedure confirms that the reverse switch is operating properly. Perform this test under any of the following conditions:

The back-up alarm does not operate.
The back-up alarm continuously operates.

Required Tools

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Table 3
Required Tools
Tool	Item	Qty	Part No	Description
A		1	146-4080	Digital Multimeter Gp
B		1	7X-1710	Multimeter Probe

Test Preparation

Drive the machine to a smooth, horizontal surface.
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Illustration 1 g06182706
Move propel lever (1) to the NEUTRAL position.
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Illustration 2 g06182711
Move parking brake switch (2) to the ON position.
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Illustration 3 g06182714
Move throttle lever (3) to the LOW-IDLE position.
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Illustration 4 g06182717
Move engine start switch (4) to the OFF position.
Remove six screws (5), and tilt plate (6) forward.
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Illustration 5 g06187560
Remove six screws (5), and tilt plate (6) forward.
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Illustration 6 g06241618
Insert black spoon from Tool (B) to into pin"3" of connector (7). Insert red spoon from Tool (B) into pin"4" of the connector.
Connect Tool (B) to Tool (A).

Test Procedure

Make sure propel lever (1) is in the NEUTRAL position.
Set Tool (A) to measure continuity. The circuit across the switch should be open. If the circuit across the switch is closed, replace the propel lever, and retest the switch. If the circuit across the switch is open, go to the next step.
Move propel lever (1) into the reverse range. The circuit across the reverse switch should close when the propel lever is moved into the reverse range.
Move propel lever (1) into the NEUTRAL position. If the switch does not operate as described above, replace the propel handle, and retest the reverse switch. If the switch operates as described above, go to the next step.
Remove Tool (B) from reverse switch connector (7).
Plug reverse switch connector (7) into the machine harness.
Position cover (6), and install six screws (5).