Fuel System/Stanadyne DB2 or DB4 Fuel Injection Pump CTM3274 (01JUL99) 40-33 Saran Liter Engines 060799 PN=278 STANADYNE DB2 OR DB4 FUEL INJECTION PUMP INSTALLATION Using a new gasket or a new O-ring, slide housing onto three studs, inserting pump drive shaft in drive gear -UN-07MAR95 bore. NOTE: Make sure that Woodruff key is seated properly. Screw the three hex. nuts onto studs and tighten CD7317 finger-tight only at this stage. Tighten drive gear hex. nut (A) to the following torque: Chrome finish nut with a thickness of 8 mm (0.315 in.) . . . . . . . . . . . . . . . . . . . . . . . 60 N·m (45 lb-ft) Black finish nut with a thickness of 10 mm (0.370 in.) . . . . . . . . . . . . . . . . .
. . . . 200 N·m (145 lb-ft) -UN-23FEB99 IMPORTANT: Do not try to tighten the chrome finish nut to 200 N·m (145 lb-ft), thread of nut will be damaged. CD30725 NOTE: It is recommended, during the refitting, to replace the chrome finish nut by the black finish nut, then tighten to 200 N·m (145 lb-ft). Connect injection pump pressure lines (C). Commence with outlet (B) and continue around the pump head in counter-clockwise direction, attaching lines in same order as engine firing (1-5-3-6-2-4 on 6 cyl. engines, 1-3-4-2 -UN-07MAR95 on 4 cyl. engines and 1-2-3 on 3 cyl. engines). Tighten fuel pressure lines at pump to 25 N·m (18 lb-ft) torque, using line wrench JDF22. CD30358 IMPORTANT:
When tightening fuel pressure lines at fuel injection pump, be sure not to turn fuel injection pump fittings. Turning of these fittings may cause internal pump damage. A—Drive gear lock nut B—Outlet connection to no.1 cylinder C—Fuel pressure lines Connect fuel supply line (E), return line (D), shut-off D—Fuel return line cable and speed control rod. E—Fuel supply line CD,3274,G40,19 -19-04JAN99 40 33