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NUT-BOTTOM 4Z8539 - Caterpillar



4Z8539 NUT-BOTTOM Caterpillar parts NUT
Rating:
16
Alternative (cross code) number:
CA4Z8539
4Z-8539
4Z8539
Caterpillar 4Z8539 NUT-BOTTOM
Weight: 6 pounds 3 kg.

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Reading the ID of a Key
Before you can operate the machine, the machine security system MSS must identify a valid electronic key ID.When the key is turned to the ON position, the MSS enters the read mode. The MSS then checks for a valid electronic key ID. If the electronic key ID matches an electronic key ID that is stored in the ECM, then the critical ECM functions are enabled. An "enable" message is also sent via the CAT data link or J1939 data link to the other electronic control modules that are on the machine. The machine will operate normally.Note: Ensure that you have only one electronic key near the exciter coil when the MSS reads the key. If there is more than one key, the ECM will not be able to read the key and the machine will not start.Note: If the ECM has failed or has been removed, the other critical machine operations controlled by the other electronic control modules will not operate.Armed
When the MSS is armed, critical machine functions are disabled. The MSS disables the power that is supplied to each component that is powered by the output drivers. The machine will not be able to operate normally.There are two states of operation within the "armed" mode.
"Key Position OFF"When no power is applied to the MSS, the MSS will default to "armed" state. When power is applied to the MSS and the Grace Period has expired, the MSS will return to the "MSS Armed".
"Key Position ON"When the key switch is first moved to the ON position, the MSS tries to read the electronic key ID. The ECM will continue reading attempts until an ID is read or the read time-out expires. If the key is not read after several attempts, the MSS turns on the red LED of the status indicator and the MSS remains armed.Note: Ensure that you have only one electronic key near the exciter coil when the MSS reads the key. If there is more than one key, the ECM will not be able to read the key and the machine will not start.Disarmed
When the MSS is disarmed, normal machine operation is allowed. A message is sent to the other machine ECM"s over the Cat data link or J1939 data link. The machine will be able to start. The green LED on the status indicator will illuminate.There are two ways to disarm the machine:
Use a valid electronic key for this machine.
Use Cat Electronic Technician® (Cat ET) to configure the MSS bypass schedule to allow machine operations during scheduled periods of time during the week.Electronic Key
After a machine has been started successfully, the operator will have 30 seconds after the machine is turned off before the MSS is automatically armed. The operator is not required to arm the system manually.During the 30 second grace period any key (electronic and non-electronic) will start the machine without key identification validation. When the 30 second grace period expires, the MSS will automatically rearm.If the MSS


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