COVER 3599906 - Caterpillar

Machine Preparation
Position the machine on level ground.
Illustration 3 g02418596
Sprocket (left travel)
(G) Blocker pin
(1) Sprocket
Place blocker pin (G) in sprocket (1) in order to block forward left travel. Refer to Illustration 3.
Stop the engine.
Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "System Pressure - Release".
Attach 311-1362 Vacuum Cap onto the hydraulic tank. Attach an air supply hose onto the assembly. Apply 276 to 414 kPa (40 to 60 psi). This procedure will pull a vacuum on the hydraulic system.
Illustration 4 g02417483
Flow Meter Tool Layout
Tooling (D)
( 2) Case drain hose
(3) Connector
(4) Travel motor
Install the following tools in accordance with the flow meter tool layout. Refer to Illustration 4.
Disconnect case drain hose (2) from connector (3).
Connect the flow meter assembly (D) between connector (3) and case drain hose (2). Note: Correct orientation of the flow meter is necessary. The oil flows from travel motor (4) to case drain hose (2).
Remove 311-1362 Vacuum Cap. Test Procedure
Start the engine.
Increase the hydraulic oil temperature to 50° 10°C (122° 18°F).
Place the machine controls at the following settings: engine speed dial "3" and AEC switch OFF.
Enter the service mode.
Input the password "9992".
Select "Override Parameters".
Illustration 5 g02794957
Set the power shift pressure to specification. Refer to Table 2 for the pressure specification.
Place the hydraulic activation control lever in the UNLOCKED position.
Move the left travel lever to full FORWARD position and check the flow of oil through the flow meter. Refer to Table 2.
Remove blocker pin (G) from sprocket (1).
Move the left travel lever in order to reposition the travel motor.
Place blocker pin (G) in sprocket (1) in order to block forward left travel.
Repeat Steps 7 through 10 in order to obtain three measurements of case drain oil. Worksheet
Table 2
"Travel Motor - Test (Measurement of Case Drain Oil)"
Date Machine Serial Number
Machine Settings Crossover Relief Pressure Power Shift Pressure Engine Speed
37500 + 2000 - 1500 kPa (5439 + 290 - 218 psi) 3500 50 kPa (508 7 psi) Engine speed dial "3"
AEC switch OFF
Item Specification(1) Left Travel Right Travel
New Travel Motor 38 L/min (10.1 US gpm) 1. 1.
2. 2.
3. 3.
Rebuilt Travel Motor 44 L/min (11.6 US gpm) 1. 1.
2. 2.
3. 3.
(1) Maximum acceptable flow