BAR (CENTER) 6K3746 - Caterpillar

Standard Tooling
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Table 2 provides a list of the required tools if standard tooling is used to perform the following test procedure.
Table 2
Required Tools (Standard Tooling)    
Tool    Item    Part Number    Description    Qty    
B     B1     177-7860     Hose As     1    
6V-4143 Coupler 2    
B2 8T-0860     Pressure Gauge
0 - 40000 kPa (0 - 5800 psi)     1    
6V-3989 Fitting 1    
C     -     4C-6500     Digital Thermometer     1    
D     -     7X-0872     Tee     1    
7J-9108 O-ring 1    
6V-3965 Coupler 1    
3J-1907 O-ring 1    
To avoid damage to the vibratory system during testing, always perform the testing with the vibratory drum on top of tires or on loose dirt. Tires will simulate a non-compacted soil condition.Never operate the vibratory system when the machine is on concrete.
If a testing time longer than three (3) minutes is required, rotate the drum periodically in order to lubricate the eccentric weight shaft bearings.
Make sure that the parking brake is activated. The propel control lever should be in the NEUTRAL position.
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Vibratory Control Valve (1) Rear Vibratory Motor Loop Hose (2) Rear Vibratory Motor Loop Coupling (3) Intercircuit Relief Valve
Disconnect rear vibratory motor loop hose (1) from rear vibratory motor loop coupling (2) .
Connect Tooling (D) between hose (1) and coupling (2) .
Connect Tooling (A) or (B) to the test port coupler in Tooling (D) .
Start the machine and run the engine at 3005 15 RPM for 4 cylinder engines CB-334E (S/N: C4F1-UP, C4X1-UP) and CB-335E (S/N: C5F1-UP). Start the machine and run the engine at 2800 10 RPM for 3 cylinder engines CB-334E (S/N: C4J1-UP) and CB-335E (S/N: C5J1-UP). Check the hydraulic temperature with Tool (B) until the hydraulic oil temperature reaches 38°C (100°F).
Move the drum selector switch to the center position. The center position of this switch activates both of the vibratory motors. Depress the vibratory ON/OFF switch to the ON position. This switch may be located on top of the propel control or on the instrument console.Note: The force that is needed in order to overcome the inertia of the weights causes the pressure in the vibratory system to momentarily reach the vibratory intercircuit relief valve setting. Observe the gauge during this procedure. The highest reading on the gauge is the vibratory intercircuit relief valve setting.
The vibratory intercircuit relief valve setting should be 12000 kPa (1740 psi).
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If the setting for vibratory intercircuit relief valve (3) is not correct, adjust vibratory intercircuit relief valve (3). Stop the engine. Remove cap (4) .
Hold valve assembly (5) with an open end wrench. Adjust the allen head screw clockwise in order to increase the pressure. Adjust the allen head screw counterclockwise in order to decrease the pressure.Note: Use caution when you adjust the valve. Minor adjustments will cause large changes in the relief valve setting.
Install cap (4). Recheck the pressure setting. If the pressure setting is