TM 5-3825-270-23&P
FIELD MAINTENANCE
CAB CONTROL BOX TACHOMETER DOES NOT OPERATE
INITIAL SETUP:
References (cont.)
Tools and Special Tools
Universal Power Interface Kit (UPIK) Wire Harness
Tool Kit, General Mechanic's: Automotive
Replacement (WP 0108)
(WP 0225, Table 1, Item 12)
Water Distributor Operator Manual (TM
Multimeter (WP 0225, Table 1, Item 4)
5-3825-270-10)
References
Battery Disconnect/Connection (WP 0085)
Equipment Condition
Engine OFF. (TM 5-3825-270-10)
Cab Control Box Tachometer Replacement
Universal Power Interface Kit (UPIK) harness
connected to prime mover. (TM
Cab Control Box Wiring Harness Replacement
5-3825-270-10)
General Wire Harness Repair (WP 0099)
Main Control Panel Tachometer Does Not
Operate (WP 0037)
TROUBLESHOOTING PROCEDURE
CAB CONTROL BOX TACHOMETER DOES NOT OPERATE
STEP 1
Does main control panel tachometer operate?
NOTE
If tachometer operates on main control panel, fault can be isolated to cab control box or
universal power interface kit (UPIK) harness.
Start engine and ensure main control panel tachometer is operational. (TM 5-3825-270-10)
TACHOMETER
Figure 1. Tachometer - Step 1.