JOHN DEERE ENGINE 4045TF270 (SN AC02633 AND UP)
ME12002
Servicing the Fuel Injection Pump
is running or still warm, damage to the rotating pump components can occur.
Removing the Fuel Injection Pump
2. If installed, remove the cutoff cable and throttle control linkage.
NOTICE: Prior to removing the fuel injection pump, use the flywheel rotation tool to (both rocker arms on this cylinder are movable) turn the engine to the top dead center compression position of cylinder no. 1, and keep the engine in place with the adjustment pin (A), as for setting the valve tip clearance. See Figure 4-30.
3. If installed, remove the electric connection to the stop solenoid or to the throttle position solenoid. 4. If installed, remove the cold-starting switch. 5. Mark the electric cables to ensure correct reassembly.
IMPORTANT:When loosening and tightening fuel feed lines on the fuel injection pump, ALWAYS use a spanner to hold the lock nut and avoid damage to the pump ports. This avoids internal pump damage. A
6. Remove fuel return line (A) and fuel feed line (C). See Figure 4-31. 7. Use a 17 mm crowfoot wrench with a long socket to remove all fuel feed lines (pressure lines) (B) from the fuel injection pump. See Figure 4-31.
Figure 4-30 Adjustment Pin Opening
IMPORTANT:Make a mark on the drive pin-
All Stanadyne DB2 and DB4 fuel injection pumps have a fixed drive shaft (it remains in the pump if the latter is removed from the engine).
ion and on the pinion of the wheel gear to mark the position of the pinions for re-assembly. The drive pinion of the fuel injection pump fits exactly on the conical drive shaft and is adjusted with a female pin or a Woodruff key. This secures it against turning it out of position on the pump shaft.
A
B
E
D
C
Figure 4-31 Fuel Injection Pump Fuel Lines 1. Clean the fuel injection pump, lines, and area around the pump with a solvent or steam jet. See Figure 4-31.
IMPORTANT:If the fuel injection pump is cleaned with a steam jet or cold water while it
909768/BP1207
Figure 4-32 End of Pump Shaft 8. Remove the lock nut and washer from the end of the pump shaft. Make sure that the washer does not drop into the control cover. 214
Printed in U.S.A
