BLOCK 3N6997 - Caterpillar

EMS Display and Functions.
(1) Engine coolant temperature. (2) Inlet manifold temperature. (3) Fuel temperature. (4) Ammeter (Battery). (5) Auxiliary temperature. (6) Engine oil pressure. (7) Fuel pressure. (8) Engine coolant level. (9) Message center. (10) Derate. (11) Auxiliary pressure. Displays:* Engine Speed* Percent Engine Load* Fuel Rate* Inlet Air Manifold Pressure* Battery Voltage* Coolant Temperature* Inlet Manifold Temperature* Fuel Temperature* Auxiliary Temperature* Auxiliary Pressure* Fuel Pressure* Engine Hours* Engine Oil Pressure Communication Data Link
EMS provides two output pins that are dedicated to the CAT data link (Pin-5 and Pin-6). The link is available to share data with other modules on the link (which essentially allows the EMS, CMS and ECM to communicate when connected together).CAT Data Link
Use twisted pair of shielded 16 AWG wires, approximately three twists per 25.4 mm (1.00 in) to connect CAT data link(+) and CAT data link(-) for the connections. The length of the wires should NOT exceed 40 m (130 ft).
Connect only ONE end of the shield to (-)Battery Bus Bar. Do NOT ground the other end of the shield.
1. Connect Pin-3 CAT data link(-) of the P1 40 Pin ECM Customer Connector to Pin-5 Data(-) of the EMS 40 Pin Customer Connector.2. Connect Pin-9 CAT data link(+) of the P1 40 Pin ECM Customer Connector to Pin-6 Data(+) of the EMS 40 Pin Customer Connector.EMS Gauge Unit Dimensions
EMS Gauge Dimensions and Mounting Requirements. Each EMS module (gauge unit) has identical dimensions. The mounting options with bezels are described below.Each module can be mounted from either the front or rear, and with or without a decorative bezel. Each module has a 5 mm (0.2 in) tapped hole in each corner (four holes), a 4 mm (0.16 in) clearance hole in each corner, and four 6 mm (0.24 in) tapped holes in the back of the housing.* Front Mount The brackets are NOT used.The bezel must be installed over the front of the module. The 4 mm (0.16 in) screws (or smaller) mount through the bezel (four corners) and into the gauge module tapped holes and screwed into the dash panel mounting surface.* Rear Mount The bracket is required and may be "U"-shaped to butt against the dash panel and pull the module tightly against the dash panel. (The bracket shown is a reference. The length of the bracket legs must be adjusted to fit your dash panel.) The bracket can be attached to the module with the 8T3992 screws [6 mm (0.24 in)] in the holes on the rear of the module.The bezel can then be attached to the gauge module with 7Y7388 screws (5 mm [0.2 in]) through the bezel into the tapped holes in the module flange. ( Screws must not exceed 12 mm (0.47 in) long or they will protrude through the module into the dash panel.)Connecting The EMS Display
Connecting Battery to EMS
1. Connect 8T9834 40 Pin EMS Connector to 133-3850 EMS.2. Connect (+)Battery Bus Bar to the positive terminal of