HOSE 0863244 - Caterpillar

Connect a 41,368 kPa (6,000 psi) pressure sensor to pressure tap (28) at the swing pump to monitor the delivery pressure of the swing pump.Test Procedure
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.
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Monitor and keypad (A) Engine speed (B) Gain/Response (C) AEC switch (D) Gain/Response switch
Place the machine controls at the following settings:
Engine speed dial "10"
AEC switch OFF
Gain/Response "CAT" (normal mode)Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
Place the hydraulic lockout lever in the UNLOCKED position.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Check the pilot oil pressure at pressure tap (27). The pressure reading should indicate 4120 100 kPa (600 15 psi). If the pilot oil pressure is not within the specification, adjust the pilot relief valve. Refer to Testing and Adjusting, "Relief Valve (Pilot) - Test and Adjust" for information concerning the adjustment of the pilot relief valve.
Move the joystick for swing to the FULL SWING position.Note: This action will upstroke the pump for full flow and must be held through the duration of the test.
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Portable hydraulic tester (flow meter) (21) Portable hydraulic tester (flow meter) (32) Valve
Turn valve (32) on portable hydraulic tester (21) clockwise. Record pump flow at each of the following pressures in Table 2. Use the pressure gauge at pressure tap (28) to monitor the delivery pressure of the swing pump.Worksheet
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P-Q characteristic curve
Table 2
"Swing Pump - Test (Constant Horsepower Flow Control)"    
   Measuring Points    
15000 kPa (2176 psi)
20000 kPa (2901 psi)    
22500 kPa (3263 psi)    
25000 kPa (3626 psi)    
27500 kPa (3989 psi)    
Flow measured liter/min (US gpm)                        
Oil temperature                        
Engine speed (rpm)                        
Flow corrected liter/min (US gpm)                        
Specification for flow rate liter/min (US gpm)     New    
348 15 (92 4)    
342 15 (90 4)    
302 15 (80 4)    
269 15 (71 4)    
242 15 (64 4)    
Service limit
296 (78)    
274 (72)    
227 (60)    
188 (50)    
170 (45)    Note: Specifications for flow rates are based on an engine speed of 1800 rpm. To attain more accurate test