CAP (retarder) 9D4069 - Caterpillar

Data Tables (For Reference Only)
The following data tables represent some of the logic that is built into ET and the ECM of the machine. Depending on the environmental variables and the altitude of the machine, ET will indicate a target RPM. Follow the onscreen prompts to match the RPM that the software indicates.
Table 3
Example
D9T with a standard fan
Target clip speed from Table 1 is 1200 rpm.
Ambient temperature of 20° C (68 ° F)
Atmospheric pressure of 95 kPa (13.78 psi)
The recorded correction factor from Table 1 is 1.02.
The corrected target clip speed is: 1200 rpm × 1.02 = 1224 (+25/−0) RPM
Table 4
Target Clip Speed Correction Factor
Atmospheric Pressure 101 kPa (14.65 psi) 99 kPa (14.36 psi) 97 kPa (14.07 psi) 95 kPa (13.78 psi) 93 kPa (13.49 psi) 91 kPa (13.20 psi) 90 kPa (13.05 psi)
Altitude 29 m (95 ft) 201 m (660 ft) 376 m (1235 ft) 553 m (1815 ft) 735 m (2410 ft) 917 m (3010 ft) + 1005.84 m (+ 3300 ft)
Ambient Air Temperature <0° C (<32 ° F) 1.00 1.00 1.00 1.00 1.00 1.01 1.01
0° C (32 ° F) 1.00 1.00 1.00 1.00 1.00 1.01 1.02
10° C (50 ° F) 1.00 1.00 1.00 1.01 1.02 1.03 1.04
20° C (68 ° F) 1.00 1.00 1.01 1.02 1.04 1.05 1.05
30° C (86 ° F) 1.01 1.02 1.03 1.04 1.05 1.06 1.07
40° C (104 ° F) 1.02 1.03 1.04 1.06 1.07 1.08 1.08
>40° C (104 ° F) 1.04 1.05 1.06 1.07 1.08 1.09 1.10 Test Procedure - Fan Reversing Relief Valve
Note: The fan reversing relief valve cannot be adjusted on the machine. The fan reversing relief valve has a setting that is higher than the maximum mechanical high-pressure setting and must be set at a corresponding flow rate. Use the following procedure to test and adjust this valve.Bench Test
Illustration 15 g02714860
(7) Relief valves
(8) Locknut
(9) Adjustment screw
Remove the relief valves (7) from the reversing valve.
Use the 257-5616 Test Manifold Block to test the fan reversing relief valves (7) on the test bench. Torque relief valves to 53 3 N m (39 2 lb ft).Note: The pressure setting for the valves (7) is 20700 kPa (3002 psi) under the following conditions:
SAE 10W hydraulic oil
65°C (150°F)
Flow rate at 4 L/min (1.10 US gpm)Adjust Procedure - Fan Reversing Relief Valve
If the fan reversing relief valves are not within the specifications, use the adjustment screw (9) to change the pressure setting until the specifications are met.
Hold adjustment screw (9) in place and loosen locknut (8).
Turn adjustment screw (9) clockwise to increase the pressure setting or turn adjustment screw (9) counterclockwise to decrease the pressure setting.
Hold adjustment screw (9) in place and tighten locknut (8).
Check the pressure.Note: When the pressure setting is within the specified limit, install relief valves (7) into reversing valve. Torque the relief valves to 53 3 N m (39 2 lb ft).