Information fuel-injection pump
BOSCH
9 461 620 849
9461620849
ZEXEL
104642-1250
1046421250
Rating:
Include in #2:
104742-1250
as FUEL INJECTION PUMP
Cross reference number
Zexel num
Bosch num
Firm num
Name
Information:
Illustration 62 g02807941
Remove the plug
Remove plug (2) .
Illustration 63 g02807956
Set speed by turning adjusting screw
Adjust speed. If Ng exceeds TMI specifications, tighten the adjusting screw. If Ng is less than the specified value, loosen the adjusting screw.
Illustration 64 g02807957
Adjust the maximum-speed stopper bolt
Adjust the maximum-speed stopper bolt until the speed at the start of high-speed control is Nf.
Check that the no-load maximum speed is Ng (described in Step 1). Continue adjustment until the specified value is obtained.
Illustration 65 g02807958
Increase pump speed to make sure that the control rack position reaches Ra.
Illustration 66 g02807959
Full-load Adjustment
Illustration 67 g02807997
Install the cover and adjust full-load stopper bolt
Install cover (3) on governor using bolts and lockwashers (2). Use caution when installing the cover to make sure that the O-ring seal is in the seal groove.
Illustration 68 g02807999
Position the control lever at maximum-speed position.
Adjust full-load stopper bolt (1) to the f"ull-load fuel injection quantity" position. See TMI for the specifications (Point A).
Install cap.Control Lever Angle Measurement
Illustration 69 g02808016
Measuring control lever angle at the "full-speed" and "idling" positions.
Measuring the control lever angle at the "idling" and "full" positions.
If the angle is not as specified by TMI, replace the shifters shim. If the control lever is positioned toward the "full" position, replace the shifters shim with a thicker one. When control lever is toward the "idling" position, replace the shim with a thinner one.Check Starting Delivery
Illustration 70 g02808018
Remove measurement adapter
Remove measurement adapter (1) .
Illustration 71 g02808038
Cap must be installed to check delivery rate
Install cap (2) .
Run pump at speed specified in TMI.
Check delivery rate with specifications listed in TMI.
Stop pump rotation.
Illustration 72 g02808058
Adjusting screw for setting fuel flow
If delivery rate does not meet TMI specifications, remove cap (2), loosen lock nut, and adjust screw (3). Adjusting screw outward decreases fuel flow and inward increases fuel flow.
Install cap (2) and recheck delivery rate. Repeat Steps 2 through 6 until delivery rate is at specified value.Lockwiring Caps of Adjustment Screws
All adjustment stops (screws) that directly affect engine performance should be lockwired after adjustment. Do not readjust any stop without using the test stand can adversely affect the engine and engine performance.