Fuel System/Stanadyne DB2 or DB4 Fuel Injection Pump CTM3274 (01JUL99) 40-35 Saran Liter Engines 060799 PN=280 ENGINE FRONT PLATE REPLACEMENT NOTE: The front plate available as a spare part is not provided with a timing mark. -UN-17FEB95 IMPORTANT: Before any front plate replacement, proceed as follows: Remove timing hole cover from injection pump and rotate engine until no. 1 piston is at TDC on its CD30322 compression stroke. Check whether both the cam ring and governor weight retainer have timing marks (A). If yes, proceed to disassembly. If no and mark only visible on cam ring (1), pencil a reference line across the governor cage (2) using the cam ring mark as reference.
Only then proceed to -UN-07MAR95 disassembly. NOTE: The front plate shows several injection pump stud locations for the various possible engine applications. Use holes marked (B). CD30033 Insert the studs into the holes corresponding to the required application and plug the remaining holes. Reinstall front plate and injection pump onto engine (see “STANADYNE DB2 OR DB4 FUEL INJECTION PUMP INSTALLATION” in this group). Transfer timing mark to new front plate. Install timing hole cover on injection pump and reassemble engine parts removed. A—Fuel injection pump timing marks B—Threaded holes for STANADYNE DB2 or DB4 -UN-08MAR95 CD30321 CD,3274,G40,21 -19-27APR92 40 35