HOSE AS 1126785 - Caterpillar

Illustration 9 g00672009
Monitor (A) Message display (B) Keypad (C) Up key (D) Left key (E) Down key (F) Right key (G) Cancel key (H) Set key (I) OK key (J) Menu key
Start Service Mode and input a fixed power shift pressure of 2400 50 kPa (350 7.5 psi).
Press menu key (J) .Note: If more than thirty seconds pass between pushing the keys on the keypad, the menu mode will be cancelled and the previous display will be restored to message display (A) .
Press down key (E) in order to highlight the menu item "SERVICE OPTIONS" on the message display. Press OK key (I) .
Input the password "FFF2". Press left key (D) or right key (F) in order to change the position of the flashing character. Press up key (C) or press down key (E) in order to change the value of the flashing character. Press OK key (I) after the correct password is displayed.
Press down key (E) once in order to highlight the second line on the message display.
Press right key (F) repeatedly until "DEVICE TEST" appears on the message display.
Press down key (E) in order to move down one line on the message display.
Press right key (F) until the "PS PRV - FIXED" appears on the message display.
Press down key (E) .
Press OK key (I) . The display on line 4 of the message display will now change to a numeric value. These characters represent the power shift pressure (kPa).
Press left key (D) or right key (F) in order to increase or decrease the numeric value that is displayed on line 4 of the message display. Pressing left key (D) decreases the power shift pressure. Pressing right key (F) increases the power shift pressure.Note: The value for power shift pressure on the monitor may not always match the pressure reading on the pressure gauge. Adjust the value on the monitor until the desired power shift pressure is attained on the pressure gauge that is connected to the pressure tap for power shift pressure. The actual power shift pressure must be 2400 50 kPa (350 7.5 psi) on the pressure gauge.Note: To prevent a change in power shift pressure during the pump flow test, do not turn the engine start switch to the OFF position.Note: Refer to Service Manual, "Engine And Pump Electronic Control System" for additional information on Service Mode.
In order to perform flow measurements for either one of the pumps, the other pump must not be under load.
Turn valve (23) on the portable hydraulic tester clockwise. Record pump flow at each of the following pressures in Table 3. Use pressure tap (19) to monitor right pump delivery pressure or use pressure tap (20) to monitor left pump delivery pressure.
Illustration 10 g00764847
P-Q characteristic curve
Table 3
Pump Flow Test    
   Measuring Points    
9800 kPa (1425 psi)
15700 kPa (2300 psi)    
19600 kPa (2850 psi)    
25500 kPa (3700 psi)    
29400 kPa (4250 psi)    
Flow measured liter/min (US gpm)     Right Pump