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ELECTRONICS GP-MONITOR 3967463 - Caterpillar

3967463 ELECTRONICS GP-MONITOR Caterpillar parts 770G, 772G ELECTRONICS
Alternative (cross code) number:
Caterpillar 3967463 ELECTRONICS GP-MONITOR

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Compatible equipment models: 3967463:

TRUCK  770G   772G   Caterpillar
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This procedure is specific to the type of pump and the type of control. Refer to the test specifications and the tooling at the end of this document.Note: A paper copy of this document may not be the latest version. Go to the Service Information System (SIS) in order to view the latest version.References
Table 2
Media Number Title
REHS1761 Required Tooling for Bench Testing Hydraulic Components
SEBF8810 Hydraulic Pump, Motor, and Cylinder Bench Test Procedure Reference Manual
SEHS8892 Operating Instructions for Caterpillar 1U-9400 Series Hydraulic Test Center
NEHS0563 Tool Operating Manual for 9U-5000 Series Hydraulic Test Bench Contamination Control
New gear pumps have a break-in time. During the break in time, the gear teeth cut into the housing. A large amount of contamination is created. An additional filter is recommended on the output of the pump. The additional filter will stop the contamination from entering the test bench. 9U-6989 Head and 9U-6984 Filter Element are recommended for this application.Mounting and Drive Configurations
There are many possibilities for mounting a gear pump. Caterpillar has two bolt and four bolt mounting plates available. The mounting plates fit pumps with SAE A, B, C, D, E, or F mounting flanges. Refer to Special Instruction, REHS1761, "Required Tooling for Bench Testing Hydraulic Components" in order to see the available mounting plates. Many other mounting plates will need to be fabricated. Fabricated tooling will need to be built according to the mounting flange of the pump that will be tested.There are several types of drive shafts that can be used on gear pumps. On pumps with spline, taper, and keyed shafts refer to Special Instruction, REHS1761, "Required Tooling for Bench Testing Hydraulic Components" for the required drive shaft adapter. A drive adapter must be fabricated for tang type shafts.Multiple Pump Suctions
Many times, multiple gear pumps are stacked in the same housing. A suction manifold may be required to supply oil to all the pump inlets. Because of the tremendous amount of possible variations, Caterpillar does not offer a suction manifold. The dealer must fabricate a suction manifold in order to accommodate the specific gear pump.Break-in Procedures
Procedure for Aluminum Body Gear Pumps
Illustration 2 g01042717The oil in the test bench should be one of the following.
SAE 10W at 60° C (140° F) or
Mobil DTE-11 at 46° C (115° F)
Start rotating the pump at 600 RPM. Listen for abnormal noise. Verify that all connections are not leaking. Check for leaks around shaft seals.
Slowly increase the speed to 2000 RPM over a 2 minute period.Note: Refer to Illustration 1 for the following steps.
Slowly increase the pressure from 0 psi to 500 psi above the relief valve pressure of the system in a 30 second period.
Cycle the pressure between the relief valve pressure of the system plus 500 psi and 0 psi 90 times in a 60 second period. Use the load valve on your test bench in order to cycle the pressure.
After the break-in procedure has been performed test the volumetric efficiency. Use the applicable Test Instruction that is provided later in this

Caterpillar SIS machinery equipment:

Caterpillar SIS

Parts electronics Caterpillar catalog:

770G, 770G OEM, 772G, 772G OEM
772G, 772G OEM, 834K, 836K, 988K
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