OPERATIONAL PERFORMANCE TEST / Engine Test Measurement: 1. Rotate the flywheel and set cylinder No.1 (or cyl- inder No.6) to the measuring position. 2. Insert a thickness gauge into the clearance be- tween rocker arm (1) and valve bridge (2). Meas- ure the valve clearance. NOTE: The cylinders are aligned from No.1 to No.6 in that order, as viewed from the fan side. Injection Order: 1-5-3-6-2-4 3. Measure the valve with the mark { in the table below of piston No.1 positioned at TDC in the compression stroke. (Measure the valve with the mark Ч in the table below of piston No.6 posi- tioned at TDC in the compression stroke.) T4GB-04-03-003 I: Inlet Valve, E: Exhaust Valve Evaluation:
Refer to Operational Performance Standard in Group T4-2. Adjustment: If the measurement results are out of specification, adjust the valve clearance. 1. Loosen lock nut (3). 2. Straightly insert a thickness gauge into the clear- ance between the end of rocker arm (1) and the cap in valve bridge (2). 3. Tighten adjusting screw (4) of rocker arm (1) until condition for the thickness gauge is proper. 4 3 1 : 50 N m (5.1 kgf m, lbf ft) 4. Tighten lock nut (5). Check the valve clearance again. 2 T4GB-04-03-025 T4-3-7 Adjusting Screw Bridge Cap Adjusting Screw Bridge Cap Cylinder No.
No.1 No.2 No.3 No.4 No.5 No.6 Valve locations I E I E I E I E I E I E When the measurement is started from cylinder No.1 { { { { { { When the measurement is started from cylinder No.6 × × × × × × Insert a thic gauge. kness Insert a th gauge. ickness