2001/07/16 Caterpillar

Machine Engines:

All

Asphalt Paver:

AP-1000 (S/N: 1HD1-UP)

Cold Planer:

PR-1000C (S/N: 5XC1-UP)

PR-450C (S/N: 7PJ1-UP)

PR-750C (S/N: 7CK1-UP)

Off-Highway Truck/Tractor:

786 (S/N: 80A1-UP; 81A1-UP)

Road Reclaimer/Soil Stabilizer:

RM-250C (S/N: AWG1-UP)

RR-250 (S/N: 6ED1-UP)

RR-250B (S/N: 3RR1-UP)

SS-250 (S/N: 6DD1-UP)

SS-250B (S/N: 5GR1-UP)

Track-Type Loader:

963B (S/N: 9BL1-UP)

973 (S/N: 90L1-UP)

Track-Type Skidder:

D4H Series II (S/N: 2AC1-UP)

Track-Type Tractor:

D6D (S/N: 31X1-UP)

D7G (S/N: 4YB1-UP)

D6D DD SR (S/N: 7XF1-UP)

Wheel Tractor-Scraper:

627 (S/N: 54K1-UP)

There are two new tachometers available: 197-7347 Tachometer (Electronic) and 197-7348 Tachometer Gp (Electronic). The former 9X-1114 Electronic Tachometer and 9X-1116 Tachometer are now serviced by 197-7347 Tachometer (Electronic). The former 9X-1117 Tachometer is serviced by 197-7348 Tachometer Gp (Electronic).

When the 9X-1114 Electronic Tachometer, 9X-1117 Tachometer, and the 9X-1116 Tachometer are replaced, the wiring harness connectors must be converted to DT connectors. In order to convert to DT connectors, a 155-2274 Connecting Plug Kit, 186-3736 Connector Sockets, and 8T-8737 Seal Plugs need to be ordered. Refer to Table 1 for a listing of all the parts that are needed to convert to DT connectors.

The 197-7347 Tachometer (Electronic) has a backlight. The 197-7347 Tachometer (Electronic) requires four 186-3736 Connector Sockets. These sockets are required for the following connections:

• positive signal connections and negative signal connections

• positive battery connections and negative battery connections

The 197-7348 Tachometer Gp (Electronic) does not have a backlight. The 197-7348 Tachometer Gp (Electronic) only requires two connector sockets: one connector socket for the positive signal and one connector socket for the negative signal.

Illustration 1	g00806834
9X-1114 Electronic Tachometer (with backlight) (1) Battery + (2) Signal + (3) Signal - (4) Battery -

Illustration 2	g00806860
9X-1116 Tachometer (with backlight) (5) Battery + (6) Signal + (7) Signal - (8) Battery -

Illustration 3	g00806856
9X-1117 Tachometer (without backlight) (9) Signal + (10) Signal -

Illustration 4	g00806871
197-7347 Tachometer (Electronic) (with backlight) (11) Signal + (12) Signal - (13) No connection (14) No connection (15) Backlight voltage + (16) Backlight voltage -

Illustration 5	g00806883
197-7348 Tachometer Gp (Electronic) (without backlight) (17) Signal + (18) Signal - (19) No connection (20) No connection (21) No connection (22) No connection