320C & 320C L Excavators AMC00001-UP (MACHINE) POWERED BY 3066 Engin...
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Producto: EXCAVATOR
Modelo: 320C EXCAVATOR AMC
Configuración: 320C & 320C L Excavators AMC00001-UP (MACHINE) POWERED BY 3066 Engine
Pruebas y Ajustes
320C Excavator Hydraulic System
Número de medio -RENR3817-11 Fecha de publicación -01/02/2010 Fecha de actualización -25/02/2010
i01695730
Main Pump - Test - Measurement of Case Drain Oil
SMCS - 5070-MV
Table 1
Required Tools
Part Number Description Qty
6V-9832 Cap As 1
Remote drain hose with an inside diameter of
2
20 mm (.78 inch)
Container for measuring 1
NOTICE
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.
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1. Stop the engine.
2. Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic
System Pressure - Release".
Illustration 1 g00873249
Main pump compartment
(1) Case drain hose
(2) Fitting (case drain filter)
3. Disconnect case drain hose (1) from fitting (2) on the case drain filter.
4. Install 6V-9832 Cap As on fitting (2) .
5. Connect one end of the remote drain hose to case drain hose (1). Place the other end of remote
drain hose into the container in order to measure the case drain oil.
6. Start the engine.
7. Place the engine speed dial at position "10" and AEC switch OFF. Maintain the maximum no-
load speed at 1860 ± 50 rpm.
Reference: Refer to Testing and Adjusting, "Engine Performance - Test" for engine rpm
settings.
8. Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
9. Perform the following steps in order to measure the case drain for two pump flow.
a. Move the joystick for the boom until the boom is at the full BOOM RAISE position.
Hold the joystick for the boom in this position for one minute.
b. Return the joystick to the NEUTRAL position.
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c. Measure the amount of case drain oil.
10. Perform the following steps in order to measure the case drain oil for the right pump.
a. Move the joystick for the bucket until the bucket is at the full BUCKET CLOSE position.
Hold the joystick for the bucket in this position for one minute.
b. Return the joystick to the NEUTRAL position.
c. Measure the amount of case drain oil.
11. Perform the following steps in order to measure the case drain oil for the left pump.
Illustration 2 g00667455
Pilot manifold
(3) Connector
(4) Solenoid valve for swing parking brake
a. Disconnect connector (3) from the solenoid valve for swing parking brake (4) .
b. Slowly move the swing joystick and make sure that the swing parking brake is activated.
c. Move the swing joystick fully for one minute.
d. Return the joystick to the NEUTRAL position.
e. Measure the amount of case drain oil.
f. Connect connector (3) to the solenoid valve for swing parking brake (4) .
Note: Repeat the test procedures three times in order to obtain three measurements.
Case drain pressure
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normal ... 100 kPa (14.5 psi)
peak pressure ... 150 kPa (21.8 psi)
The following values specify the maximum acceptable flow of case drain oil at 35000 kPa (5076 psi)
pump discharge pressure.
one pump ... 17.3 L/min (4.57 US gpm)
two pump ... 26.0 L/min (6.87 US gpm)
Note: The temperature of the case drain oil is 20 °C (68 °F) higher than the temperature of the suction
oil at normal operating conditions.
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