Fuel System/Stanadyne DM4 Fuel Injection Pump CTM3274 (01JUL99) 40-36 Saran Liter Engines 060799 PN=281 STANADYNE DM4 FUEL INJECTION PUMP REMOVAL IMPORTANT: Never steam clean or pour cold water on a fuel injection pump while the -UN-07MAR95 pump is running or while it is warm. Clean the fuel injection pump, lines and area around the pump with cleaning solvent or a steam cleaner. CD30144 Remove the timing hole cover. Rotate the engine until timing mark on governor weight retainer is in line with timing mark on cam ring. Disconnect speed control rod and shut-off system. Disconnect fuel return line (A) and fuel supply line (B). Disconnect injection lines (C), using line wrench JDF22.
-UN-23MAY95 IMPORTANT: When removing injection lines to nozzles, do not turn outlet fittings in the pump. Turning these fittings may cause internal injection pump damage. CD7322 Remove mounting hole cover in timing gear cover. Remove hex. nut and washer securing injection pump drive gear to pump shaft. Remove hex. nuts (D). Remove fuel injection pump, taking care not to lose the Woodruff key. Plug all open connections on pump and fuel lines. Do -UN-07MAR95 not use fibrous material.
A—Fuel return line B—Fuel supply line C—Fuel pressure lines D—Pump attaching nuts CD7323 CD,3274,G40,23 -19-01FEB94 40 REPAIRS TO FUEL INJECTION PUMP Do not disassemble the Stanadyne fuel injection pump further than necessary for installing available parts, not even for cleaning. Send fuel injection pump to a specialized workshop for proper checking and adjustment. CD,3274,G40,22 -19-27APR92 36