FIGURE 5-32. DECOMPRESSION ADJUSTMENT

TM-5-4310-393-14 Air Compressor Diesel Engine Driven 20 CFM 3200 PSI Model KA7-DA Manual
Page Navigation
120

TM 5-4310-393-14 4. Adjusting the Decompression Screw. NOTE Adjustment of the decompression screw (Figure 5-32, Item 3) is required if the engine does not decompress when the decompression lever is in position. a. Turn the engine in the same direction as for adjusting tappet clearance. b. Put decompression lever in FREEWHEEL position (Figure 4-3). c. Using box wrench loosen nut (Figure 5-32, Item 2) and turn adjustment screw (1) clockwise until rocker touches valve stem. d. Turn adjustment screw (1) another half turn and secure by tightening nut (2). FIGURE 5-32. DECOMPRESSION ADJUSTMENT 5. Adjusting the Pushrod Clearance(s) NOTE Check clearance of complete pushrod (Figure 5-33, Item 1) and pinion (2). a. Use feeler gauge to check that clearance (3) between socket of complete pushrod (1) and pinion (2) is 0 039 inch (1.0 mm). b. Check that clearance (4) is 0.039 Inch (10 mm). c. Clearances can be adjusted by adjustment complete pushrod (1) for clearance (3) and adjusting rocker shaft for clearance (4). NOTE During engine operation. Decompression shaft must not move. FIGURE 5-33. PUSHROD ADJUSTMENT F. Repair. 1. Permitted Repairs. a. If the inside diameter of the cylinder head guide (Figure 5-34, Item 1) exceeds 0 2780 Inch (7 059 mm), replace the guide. Press out the valve guide. 5-25

Privacy Statement
Press Release
Contact