TUBE AS-OIL DRAIN 1965121 - Caterpillar

Illustration 1 g00468873
Circuit diagram (1) Swing motor (2) Connector (3) Tee (4) Makeup line (5) Main control valves (6) Swing boom and blade control valve (7) Delivery line (8) Plug (9) Portable hydraulic tester (flow meter) (10) Pressure gauge (11) Pressure tap (12) Engine (13) Multitach group (14) Swing boom and blade pump
Illustration 2 g00468908
(7) Pressure tap (blade pump) (delivery pressure) (11) Pilot line (14) Swing boom and blade pump
Illustration 3 g00468909
Portable hydraulic tester (flow meter) (9) Portable hydraulic tester (flow meter) (13) Multitach group (15) Valve (flow meter)Preparation
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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Position the machine on level ground.
Stop the engine.
Release the pressure in the hydraulic system. Refer to Testing And Adjusting, "Hydraulic System Pressure - Release".
Install the following tools in accordance with the circuit diagram. Refer to Illustration 1.
Disconnect delivery line (7) from the connector on top of swing boom and blade pump (14) .
Install 13/16-16 UN plug (8) in the open end of delivery line (7) .
Disconnect makeup line (4) from connector (2) of swing motor (1) .
Install tee (3) to connector (2) .
Connect makeup line (4) to tee (3) .
Install portable hydraulic tester (9) between blade pump (14) and tee (3) .
Install multitach group (13) on engine (10) .
Connect 60000 kPa (8700 psi) pressure gauge (10) to pressure tap (11) of blade pump (14) .
To prevent personal injury or equipment damage from failure of the hydraulic test equipment or associated circuit components because of blocked pump flow, make sure that the test equipment valves are fully open before starting the engine.
To prevent personal injury and/or equipment damage from failed lines or components while the hydraulic test equipment is returned to the open flow position, slowly open the hydraulic test equipment valve while monitoring the pump flow.If pump flow does not increase as the valve is opened, shut the engine off and determine what is preventing the pump from upstroking.
Start the engine.
Place the machine controls at the following settings: Power Mode Switch ON and engine speed dial in the HIGH IDLE position. Maintain the maximum no-load speed at 2210 60 rpm with the low idle switch in the OFF position.ReferenceMake reference to Testing And Adjusting, "Operational Checks" for engine rpm settings.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).Test
Slowly turn valve (15) on portable hydraulic tester (9) clockwise until the pressure gauge of the portable hydraulic tester shows a reading of 17200 kPa (2500 psi).
Record the pump flow at 17200 kPa (2500 psi) in the following table.
Table 1
Test Data For Pump Flow
17200 kPa (2500 psi)    
Oil Temperature °C (°F)        
Engine speed (rpm)