SHOE ASSEM. 4Y2991 - Caterpillar

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Unhook latch (10) and open access panel (11) on the right side of the machine.
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Remove nine bolts (12). Remove the fender from support.
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Bottom view of pump
Remove the plug from port "M4" (14). Remove the plug from port "M5" (13) .
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Install one Tool (B) in port "M4" (14). Install second Tool (B) in port "M5" (13) .
Connect Tool (A2) to Tool (B) in port "M4" (14). Connect the other Tool (A2) to Tool (B) in port "M5" (13) .
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Disconnect reverse EDC (16). Mark the connector for identification. Note: The A333-PK and the H862-GY wires are connected to the reverse EDC connector for the right propel pump. Disconnection of the EDC connector will cause a fault to appear in the monitoring system when the machine is started. After this procedure is completed, the fault will no longer be active.
Disconnect forward EDC (15). Mark this connector for identification. Note: The 336-GY and the H862-GY wires are connected to the forward EDC connector for the right propel pump. Disconnection of the EDC connector will cause a fault to appear in the monitoring system when the machine is started. After this procedure is completed, the fault will no longer be active.Test Procedure
Move machine power switch (9) to the ON position.
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Press push to start switch (6) for 2 seconds in order to start the engine. An LED next to the push to start switch will flash when the engine is in start mode. When the engine has started, the LED will remain illuminated.Note: Only one attempt to start the engine is allowed per key cycle. A new key cycle will need to be done in order to restart the process.
Operate the engine at low idle for a few minutes.
If the LED next to "ECO" switch (17) is illuminated, press the "ECO" switch in order to deactivate the ECO mode.
Press the up arrow on throttle control switch (8) in order to place the engine in high idle. The engine speed should increase to 2200 rpm.
Read the pressure on Tool (A1) for port "M4" (14). Read the pressure on Tool (A1) for port "M5" (13). The pressures should agree within 130 kPa (19 psi). If the pressures agree within specification, go to Step 7. If the pressures differ beyond specification, go to "Adjustment Procedure", Step 1.
Press the down arrow on throttle control switch (8) once in order to operate the engine in low idle.
Shut off the engine. Either place machine power switch (9) in the OFF position or press and hold push to start switch (6) for 3 seconds. An LED next to the push to start switch will flash when the engine is in shutdown mode.Note: The engine may run for several minutes when placed in the shutdown mode.
If the engine was shut down using the push to start switch (6), move machine power switch (9) to the OFF position. Allow the oil to cool.
Remove the tooling. Install the plug removed from port "M4" (14) and port