Fuel System/Stanadyne DM4 Fuel Injection Pump CTM3274 (01JUL99) 40-37 Saran Liter Engines 060799 PN=282 STANADYNE DM4 FUEL INJECTION PUMP INSTALLATION AND TIMING Make sure no. 1 piston is at TDC on compression stroke. -UN-07MAR95 Rotate pump drive shaft and align timing mark on governor weight retainer hub with timing mark on cam ring. CD30144 Check pump mounting flange packing for damage and replace, when necessary. Install injection pump on engine, making sure Woodruff key enters gear. Install pump attaching nuts (A) finger-tight. Install washer and hex. nut on pump shaft and tighten to -UN-23MAY95 200 N·m (145 lb-ft).
Rotate pump counter-clockwise (as seen from flywheel end) and then in opposite direction until timing marks on cam ring and governor weight retainer are aligned. CD7335 Tighten pump attaching nuts (A) to 25 N·m (18 lb-ft). Connect injection pump pressure lines (B). Start with outlet (E) and continue around pump head in counterclockwise direction, attaching lines in same order as engine firing (1-5-3-6-2-4 on 6-cylinder engines and 1-3-4-2 on 4-cylinder engines). -UN-07MAR95 Tighten fuel pressure lines at pump to 25 N·m (18 lb-ft), using line wrench JDF22. IMPORTANT: When tightening fuel pressure lines at CD30329 fuel injection pump, be sure not to turn fuel injection pump fittings.
Turning of these fittings may cause internal pump damage. Connect fuel supply line (C), return line (D), shut-off system and speed control rod. -UN-07MAR95 A—Pump attaching nuts B—Fuel pressure lines C—Fuel supply line D—Fuel return line E—Outlet connection to cylinder no. 1 F—Engine block side CD7337 CD,3274,G40,24 -19-01FEB94 40 37