ENGINE AR 1302234 - Caterpillar

Test and Adjust for Vibratory Frequency
Introduction
This test is performed in order to measure the Vibrations Per Minute (VPM) of the vibratory gear motor.
Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Sudden movement of the machine or release of oil under pressure can cause serious injury to persons on or near the machine.To prevent possible injury, perform the procedure that follows before testing and adjusting the hydraulic system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Required Tools
Illustration 1 g00940598
Illustration 2 g00940600
Table 1 provides a list of the required tools if standard tooling is used to perform the following test procedure.
Table 1
Required Tools (Standard Tooling)    
Tool    Item    Part Number    Description    Qty    
A     -     133-0963     Drum Vibration Tachometer     1    
B     -     4C-6500     Digital Thermometer     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.
Note: The main relief valve, the anti-lope relief valve and the engine high idle must be within tolerance in order to ensure the accuracy of this test.
Make sure that the parking brake is activated. The propel control lever should be in the NEUTRAL position.
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