2) 2) ENGINE SPEED ENGINE SPEED (1) Measure the engine speed at each power mode The engine speed at each power mode must meet standard RPM; if not, all other operational performance data will be unreliable. It is essential to perform this test first. CLUSTER (2) (2) ① Preparation Preparation Warm up the machine, until the engine coolant temperature reaches 50 C or more, and the hydraulic oil is 50 ± 5 C. Set the accel dial at 10 (max) position. Select the P-mode switch. Measure the engine RPM. ② ③ ④ Engine RPM display Power mode switch Pilot lamp(P, S, E) (3) (3) Measurement Measurement Start the engine. The engine will run at start idle speed. Measure engine speed with a engine rpm display.
Measure and record the engine speed at each mode (P, S, E). Select the P-mode. Lightly operate the bucket control lever a few times, then return the control lever to neutral; The engine will automatically enter the auto-idle speed after 4 seconds. Measure and record the auto deceleration speed. ① ② ③ ④ ⑤ Evaluation Evaluation The measured speeds should meet the following specifications. (4) (4) Unit : rpm Condition : Set the accel dial at 10 (max) position. 7-4 Model Engine speed Standard Remarks R505LVS Start idle 900±50 P mode 1750±50 S mode 1650±50 E mode 1600±50 Auto decel 1000±50 One touch decel 900±50