TM 5-3825-270-23&P
0059
STEP 3
Is cab control box tachometer pulse adjustment dial set to pulse 5?
NOTE
The tachometer receives its engine speed signal from the alternator. If the tachometer is not
set to proper setting, incorrect engine speed or no engine speed may be observed from
gauge.
1.
Remove six screws from cab control box.
CAB CONTROL
BOX SCREWS
CAB CONTROL
BOX SCREWS
Figure 4. Cab Control Box Screws - Step 3.
2.
Check tachometer pulse adjustment dial.
PULSE
ADJUSTMENT
DIAL
BACK OF CAB
CONTROL BOX
CAB CONTROL
BOX
TACHOMETER
Figure 5. Cab Control Box Tachometer Pulse Adjustment Dial - Step 3.
CONDITION/INDICATION
Is cab control box tachometer pulse adjustment dial set to pulse 5?