Transducer Kit.

Troubleshoot The High Mobility Multi- Purpose Wheeled Vehicle (HMMWV)
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(5) Transducer Kit.

The transducer kit contains a pulse

tachometer transducer, a pressure and a vacuum transducer, and the

necessary adapters (bushing, plugs, tees, etc.).

Also included in

the kit is a current probe for measuring current and a test probe

cable for measuring voltage and resistance.

Before installing any transducer kit item on the vehicle, be sure

that the mounting surfaces are clean. This is particularly important

if the mechanic is going to open fuel lines or tap into manifolds.

Dirt particles entering the engine can cause damage to both the

engine and the transducer kit item.

The transducers should be kept

clean, free of dirt and grease, and handled with reasonable care.

Figure 11 (on the following page) illustrates the transducer kit.

(a) Pressure Transducers.

The pressure transducers have a

small breather hole on the side of the housing which should be kept

unplugged. Do not use high pressure.

(b) Pulse Tachometer.

Make sure that the slotted hole in the

engine tachometer drive shaft is clear and not hard packed before

installing the pulse tachometer.

Observe threaded fittings carefully to

avoid engaging straight threads with pipe threads. Each measurement

device (transducer) in the transducer kit has its own identification

resistor.

The VTM uses this identification resistor to check that

the correct transducer is connected for the measurement being made.

If the correct transducer is not connected, error code E002 will be

displayed.