TM 5-3825-270-23&P
0062
DECISION
No - Replace red wire between engine speed SET switch and engine speed RPM switch. (WP 0099) Verify
problem is solved. (Step 6 - Does cab control box engine speed SET switch operate?)
Yes - Go to step 4. (Step 4 - Are less than 200 ohms measured on black wire at cab control box engine speed
SET switch to known good ground?)
STEP 4
Are less than 200 ohms measured on black wire at cab control box engine speed SET switch to known good
ground?
1.
Push in EMERGENCY STOP switch to off position. (TM 5-3825-270-10)
2.
Disconnect batteries. (WP 0085)
3.
Set multimeter to measure continuity.
4.
Connect red multimeter lead to black wire at cab control box engine speed SET switch.
BACK OF CAB
CONTROL BOX
RED WIRE
CAB CONTROL
BOX ENGINE
SPEED SET
SWITCH
BLACK WIRE
Figure 5. Cab Control Box Engine Speed Set Switch - Step 4.
5.
Connect black multimeter lead to known good ground.
6.
Note multimeter reading.
CONDITION/INDICATION
Are less than 200 ohms measured on black wire at cab control box engine speed SET switch to known good
ground?
DECISION
No - Go to step 5. (Step 5 - Are less than 200 ohms measured at UPIK harness connector pin A to known good
ground?)
Yes - Replace cab control box engine speed SET switch. (WP 0211) Verify problem is solved. (Step 6 - Does
cab control box engine speed SET switch operate?)
STEP 5
Are less than 200 ohms measured at UPIK harness connector pin A to known good ground?
1.
Disconnect water distributor UPIK electrical harness from prime mover.