GASKET-CYLINDER HEAD 2W7984 - Caterpillar

Engine: Commercial
All
3406B (S/N: 9PL1-UP)
3412 (S/N: 5RL1-UP)
3412C (S/N: PTL1-UP)
G3306 SI TA (S/N: CNR1-UP)
3508 (S/N: 3HM1-UP; 8TL1-UP; 9WN1-UP; CAW1-UP; CMR1-UP; CNF1-UP; PTK1-UP)
3512 (S/N: CMJ1-UP; FDR1-UP; PTG1-UP; PTH1-UP)
3516 (S/N: 5MJ1-UP; CAL1-UP; CMD1-UP; PTD1-UP)
3608 (S/N: 1ZD1-UP; 7WR1-UP; 8LL1-UP)
G3508 (S/N: CPJ1-UP; CPY1-UP)
G3512 (S/N: CRN1-UP; CSP1-UP)
G3516 (S/N: CPG1-UP; CSZ1-UP)
Electric Power Generation:
SR4 (S/N: 2MM1-UP; 3YM1-UP; 4LM1-UP; 5JM1-UP; 6JM1-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.
Table 1
Parts Needed to Replace the 9X-1114 Electronic Tachometer, 9X-1116 Tachometer, and the 9X-1117 Tachometer    
Former Tachometer     Serviced By New Tachometer     Parts that Are Needed to Convert to DT Connectors    
9X-1114 Electronic Tachometer     197-7347 Tachometer (Electronic)     155-2274 Connecting Plug Kit (Qty 1)
186-3736 Connector Socket (Qty 4)
8T-8737 Seal Plug (Qty 2) (1)    
9X-1116 Tachometer     197-7347 Tachometer (Electronic)     155-2274 Connecting Plug Kit (Qty 1)
186-3736 Connector Socket (Qty 4)
8T-8737 Seal Plug (Qty 2) (1)    
9X-1117 Tachometer     197-7348 Tachometer Gp (Electronic)     155-2274 Connecting Plug Kit (Qty 1)
186-3736 Connector Socket (Qty 2)
8T-8737 Seal Plug (Qty 4) (1)    
( 1 ) Use the 8T-8737 Seal Plugs to seal unused holes in the 155-2274 Connecting Plug Kit .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 connectionsThe 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