hitachi — VALVE CLEARANCE

OPERATIONAL PERFORMANCE TEST / Engine Test Measurement: 1. Insert a thickness gauge into the clearance be- tween rocker arm and bridge cap end and meas- ure the valve clearance. Rocker Arm NOTE: The cylinders are aligned from No.1 to No.4 in that order, as viewed from the fan side. Injection Order: 1-3-4-2 2. When measurement is started from No.1 cylinder, perform the same measurement to all valves in- dicated with the mark “ ” in the table below. (When measurement is started from No.4 cylinder, perform the measurement in the valves shown with mark “ Ч ”.) T17P-04-03-001 Bridge Cap 3. Rotate the crankshaft 360 ° . Align the TDC mark with the pointer.

Continue measurement of other valves in the same way. Evaluation: Refer to Operational Performance Standard in Group T4-2. T4-3-5 Cylinder No. No.1 No.2 No.3 No.4 Valve locations I E I E I E I E When the measurement is started from No.1 cylinder { { { { When the measurement is started from No.4 cylinder × × × ×