OPERATIONAL PERFORMANCE TEST / Component Test PRIMARY PILOT PRESSURE Preparation: 1. Stop the engine. 2. Push the air bleed valve on top of the hydraulic oil tank and release any remaining pressure. 3. Remove the plug from the pilot filter. Install adapter (ST 6069) and pressure gauge (ST 6942) to the pressure check port. : 14 mm 4. Start the engine. Confirm that no oil leakage is observed at the pressure gauge connection. 5. Maintain the hydraulic oil temperature at 50 ± 5 ° C (122 ± 41 ° F). Measurement: 1. Select the following switch positions: Plug T178-03-07-001 2. Measure pilot pressure in each specified setting above without load. 3.
Repeat the measurement three times and calcu- late the average values. Evaluation: Refer to the Performance Standard Table in Group T4-2. T4-5-1 Engine Control Dial Power Mode Switch Auto-Idle Switch Work Mode Fast Idle P Mode OFF Digging Mode Slow Idle P Mode OFF Digging Mode