PLATE-IDENTIFICATION 1644959 - Caterpillar

Note: Perform "Relief Valve (Charge) Test and Adjust" before "Relief Valve (Main) Test and Adjust".
Drive the machine to a smooth, horizontal surface.
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Move propel lever (1) to the NEUTRAL position.
Move parking brake switch (2) to the ON position.
Place the engine in ECO mode or low idle.
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Select "Main Menu" (3) on the machine display.
Select "Machine Setup" (4).
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Select "Engine Spd Sw" (5).
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Select "ECO" (6) or "Low" (7).
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Move engine start switch (8) to the OFF position.
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Unlock latch (9) and open engine compartment door (10) on the right side of the machine.
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Disconnect brake supply hose assembly (11) to both motors. Use Tool (D) to cap the port. Use Tool (E) to plug the hose.
Assemble the tooling. Connect Tool (C) to Tool (B). Make two sets of tooling.
Connect both sets of Tool (B) to Tool (A).
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Connect Tool (C) to port "Mb" (12) on the propel pump.
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Connect other Tool (C) to port "Ma" (13) on the propel pump.
Move engine start switch (8) to the START position. Release the switch when the engine starts.
Place the engine in high idle.
Operate the hydraulic system until the oil temperature reaches the test temperature of 45 °C (113 °F).
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Use speed control switches (14) to set the propel speed to 50 percent. Note: Two things indicate when the propel speed is set to 50 percent. First, "Speed Control % 50" will appear on the display. Second, four LEDs next to speed control switches (14) will be illuminated.
Move parking brake switch (2) to the OFF position.
Modulate propel lever (1) reverse until the peak pressure is registered (approximately one half of the total travel). Record the pressure at port "Ma" (13). The pressure should be 42500 2000 kPa (6164 290 psi).
Modulate propel lever (1) to forward until the peak pressure is registered (approximately one half of the total travel). Record the pressure at port "Mb" (12). The pressure should be 42500 2000 kPa (6164 290 psi).
Move propel lever (1) to the NEUTRAL position.
Place the engine in ECO mode or in low idle.
Move parking brake switch (2) to the ON position.
Move engine start switch (8) to the OFF position.
If either the forward pressure or the reverse pressure was outside the specified range, go to Step 24. If both the forward pressure and the reverse pressure are inside the specified range, go to Step 27.
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If the reverse pressure is outside the specified range, "Ma" relief valve (16) must be cleaned or replaced.
If forward pressure is outside the specified range, "Mb" relief valve (15) must be cleaned or replaced.
Go to Step 12.
Remove the tooling.
Remove Tool (E) from brake supply hose assembly (11) at the drum propel motors. Remove Tool (D) from the brake inlet port at the drum propel motors. Connect the brake supply hose to the brake inlet ports on the propel motors.
Close engine compartment door (10) on the right side of machine and secure latch (9).