INSTALLATION, OPERATION AND MAINTENANCE OF 9N3771 INJECTION GROUP (CETANE){1250} Caterpillar

Installation of the 9N3771 Injection Group (Cetane) on 3208 Diesel Engines will keep white smoke at a minimum when the engine is started during cold temperatures.

NOTE: Connect the wiring to 8L5000 Switch (1) so that the system can be activated with the starting motor switch in the OFF position.

NOTE: Keep the additive tank full when not in use. This will prevent damage to the system and components by corrosion when not used for long periods of time.

Operation: Just before the engine is started, push the switch to activate the system; this will let the additive flow for approximately two minutes, through an orifice connected to the fuel supply line of the Sleeve Metering Fuel System. The fuel transfer pump then pulls the additive into the system along with the Diesel fuel. The system can be again activated if necessary. The engine can be started approximately three to four times per liter (fifteen to twenty times per gallon) of additive.

Maintenance: Keep the additive tank full when not in use. This will prevent damage to the system and components by corrosion when not used for long periods of time. Install a new injection group filter (9N3778) at six month intervals or when the filter becomes plugged (full of foreign material) so additive will not flow through it.

ADDITIVE RECOMMENDATION: Ethyl D112 Diesel Ignition Improver

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Ethyl D11-2 Diesel Ignition Improver is highly flammable; do not install the additive tank near a source of heat or sparks. If there is a leak in the tank or an accident causes a loss of additive, a fire could be the result.

1 - 9N3334 Tank Assembly

2 - 1P4022 Fitting

3 - 9N3778 Filter Assembly

4 - 8L6557 Connector

5 - 317224 Hose Assembly

6 - 306984 Connector

7 - 9L8791 Solenoid

8 - 7W1539 Orifice

9 - 8T2543 Tee

10 - 5P5009 Reducer

11 - 9N3828 Harness Assembly

12 - 7G1018 Relay

13 - 8L5000 Switch

14 - 9N3335 Strap 533567 Bracket

15 - 5P0733 Hose 200 (8.0")

16 - 1P4278 Clamp

17 - 7D1553 Clip

18 - 8J1256 Clip

19 - 4B1248 Screw 4B2051 Nut 4B4674 Washer

20 - 3J7354 Seal

21 - 1J9671 Seal

1 Install items (12) and (13) inside the operator's compartment; fasten switch (13) on the dash and install relay (12) under the dash. Install additive tank (1) on the outside of the engine compartment in an acceptable location for easy access and away from any source of heat.

2 Install 9N3620 Fuel Additive Injection Instruction Film on the dash next to 8L5000 Switch (13). Install 9N3621 CAUTION Film on tank (1) at a location that can be seen from the side of the vehicle.

3 Install the remainder of the parts as shown in the above illustration. Fasten filter (3), and hoses (5) and (15) with the clips shown.

4 Check the system for leaks after the installation is complete; use air at a maximum pressure of 70 to 105 kPa (10 to 15 psi).