Fuel System
Check Engine Speed on MICO in-Line Fuel Injection Pump
40 45
–UN–23FEB99
NOTE: Before adjusting engine speed, make sure engine has reached its normal operating temperature.
Fast Idle Checking
CD30738
All speeds indicated apply to an engine not under load. The maximum permissible speed variation is ± 50 rpm for slow idle speed and + 50 rpm for fast idle speed. MICO in-line pump
Move pump throttle lever against pump fast idle adjusting screw (A). Check engine speed and compare with specifications. .
A—Fast idle adjusting screw B—Slow idle spring screw C—Slow idle speed screw
NOTE: Fast idle is settled by the factory then the fast idle adjusting screw (A) is sealed to prevent from tampering. Fast idle adjustment can only be done by an authorized fuel system agent. Slow Idle Checking
NOTE: Both the slow idle spring screw (B) and the slow idle speed screw (C) are used to adjust the slow idle speed. Remove the threaded caps to access these adjusting screws. 1. Loosen slow idle spring screw (B) as much as possible. 2. Adjust slow idle speed screw (C) to the specifications minus 20 rpm. 3. Retighten slow idle spring screw (B) until engine slow idle speed specification is obtained.
CD03523,000013F –19–06SEP04–1/1
CTM125 (22MAR06)
40-45
POWERTECH 2.9 L Diesel Engines 032306
PN=221