TM-9-2815-220-24

AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TM-9-2815-220-24 - Page 229 of 1563

TM 9-2815-220-24

INTAKE AND EXHAUST VALVE CLEARANCE ADJUSTMENT

0034 00

BEFORE ADJUSTMENT (Continued)

8

7

6

2. Turn crankshaft until valves (6,7) are closed

and camshaft lobes (8) are pointing towards

cylinder base as shown.

ADJUSTMENT

1. Adjust exhaust valve (6) clearance (0.025 inch, 0.635 mm).

a. Loosen exhaust valve adjusting screw lock nut (9).

b. Turn valve adjusting screw (10) until clearance between screw pad (11) and valve stem is

0.025 inch (0.635 mm) using thickness gauge blade (12) (item 56, WP 0176).

c. Torque lock nut (19) to 200-225 inch-pounds (23-25 N

•

m) after correct adjustment is

made.

Make certain setting has not changed after tightening lock nut (9).

11

9

10

12

6

WP 0034 00-3