TM 5-3825-270-23&P
0041
4.
Set multimeter to measure continuity.
WARNING
Ensure electrical power is off prior to working on all electrical systems. Failure to comply
may result in injury or death to personnel.
Remove all jewelry, such as rings, ID tags, bracelets, etc., prior to working on or around
equipment. Jewelry and tools can catch on equipment, contact positive electrical circuits,
and cause a direct short, severe burns, or electrical shock. Failure to comply may result
in injury or death to personnel.
5.
Connect red multimeter probe to terminal 2 on engine speed RPM switch.
BACK OF
RED/GREEN
CONTROL PANEL
WIRE
RED JUMPER WIRE
RED/WHITE WIRE
TERMINAL 1
TERMINAL 2
ENGINE
BACK OF
TERMINAL 3
SPEED
ENGINE SPEED
RPM SWITCH
RPM SWITCH
Figure 2. Engine Speed RPM Switch - Step 1.
6.
Connect black multimeter probe to terminal 1 on engine speed RPM switch.
7.
While holding multimeter probes to terminals, place engine speed RPM switch to '' position.
8.
Note multimeter reading.
9.
Move black multimeter probe to terminal 3 on engine speed RPM switch.
10.
While holding multimeter probes to terminals, place engine speed RPM switch to '+' position.
11.
Note multimeter reading.
CONDITION/INDICATION
Are less than 200 ohms measured across engine speed RPM switch terminals with switch in '+' and '' positions?
DECISION
No - Replace engine speed RPM switch. (WP 0095) Verify problem is solved. (Step 7 - Does engine speed RPM
switch operate?)
Yes - Go to step 2. (Step 2 - Are less than 200 ohms measured from red/white wire on engine speed RPM switch
to governor controller harness connector, pin E1?)
STEP 2