Usage:
330B L (6DR1583-Up) Excavators
Reference: Service Manual Module; Testing And Adjusting 330B and 330B L Excavators Hydraulic Systems; SENR8971-01; "Pump Flow Test And Adjustment"; Page 25. This module is found in Service Manual SENR1900.
New pump flow test specifications are required for the machines listed. The additions to the service manual module are as follows:
On Page 29, for the "Test Procedure"; the P-Q Characteristic Curve and the Delivery Pressure Chart contains new specifications. Make the following additions to the module.
P-Q Characteristic Curve
On Page 30, for the "Main Pump Flow Adjustment", Subsection "Flow Control", Step 2 contains new specifications. Make the following additions to the module.
2. Adjust the flow by turning setscrew (24). When setscrew (24) is turned clockwise, the flow increases. When the screw is turned counterclockwise, the flow decreases. When setscrew (24) is turned 1/4 turn, the flow changes as follows:
a. It is approximately 23 liter/min (6.1 U.S. gpm) within a control range of regulator first spring [measured pressure points 17 800 kPa (2600 psi) and 25 500 kPa (3700 psi)].
b. It is approximately 10 liter/min (2.6 U.S. gpm) within a control range of regulator second spring [measured pressure points 25 500 kPa (3700 psi) and 34 300 kPa (4950 psi)].
On Page 35, for the "Test Procedure"; Step 3, the P-Q Characteristic Curve, and the Negative Flow Control Pressure Chart contains new specifications. Make the following additions to the module.
3. Adjust pilot relief valve of pilot oil manifold (11) until pressure gauge (19) connected to tee (14) reads 2650 kPa (385 psi).
P-Q Characteristic Curve [Negative Flow Control at 6850 kPa (1000 psi) Pump Delivery Pressure]
On Page 39, for the "Pilot Pump Flow Test"; Subsection "Preparation"; Step 6 contains new specifications. Make the following additions to the module.
6. Place the engine speed dial at position "10" and maintain the maximum no load speed at 1850 ± 50 rpm with the AEC switch OFF. (Read the rpm three seconds elapsed time after the engine speed dial has been placed in position "10").
On Page 39, for the "Pilot Pump Flow Test"; Subsection "Test Procedure"; Step 2 contains new specifications. Make the following additions to the module.
2. Record the pilot pump flow at 2450 kPa (355 psi) pilot pressure.