TM 5-2420-230-24-2
Fuel Pump Idle Speed (005-029)
B3.9 and B5.9 Series Engines
Page 5-58
Section 5 - Fuel System - Group 05
CAUTION
The fuel control lever on the Bosch VE fuel injection
pump is indexed to the shaft during pump calibration.
If the lever has been removed and reinstalled incor-
rectly, engine speed and power will be affected.
Bosch VE Fuel Injection Pump Adjustment Screws
A - Idle Screw
B - High-Idle Screw
The high-speed adjustment screw on both fuel injection
pumps provides the stop for full speed. The high-speed
adjusting screws are sealed. Adjustment of this screw must
be performed only by an authorized fuel injection pump
service center, and then resealed.
The high-speed adjusting screw can be used to derate
engines.
Bosch RSV Governor
Idle speed adjustment for industrial engines requires the
setting of both the low-idle speed screw (1) and the bumper
spring screw (2).
19 mm, Screwdriver and Tachometer
First, loosen the locknut; then, back out the bumper spring
screw until there is no change in engine speed.
L-918