13550T 1 Mercury COVER

04Oct2018
U-562
Before/After
PRODUCT SUPPORT PROGRAM FOR UPDATING THE DOSING CABINET WIRE HARNESS TO ISOLATE DC GROUND ON CERTAIN C280-16 MARINE ENGINES
108X 1408 PS46024
Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
This Program must be administered either before or after failure.In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS46024" as the Part Numberand "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code.If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
The information supplied in this service letter may not be valid after the termination date of this program.Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
TERMINATION DATE
31Oct2020
PROBLEM
The existing DC pump on the dosing cabinet does not isolate the DC ground on certain C280-16 Marine Engines.
AFFECTED PRODUCT
Model Identification Number
C280-16 R4M00101-00108
PARTS NEEDED
Qty
Part Number Description
1 PUMP_PWR_KIT Dosing Pump Power Supply Kit
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.
ACTION REQUIRED
The parts required for this program should have already been provided to the dealer. If a dealer does not have the parts, have the Dealer Technical Communicator (TC) submit a request for the parts to CPI number 410781 through?CPI Feedback?within the Service Information Management System (SIMSi)
1 - Disconnect power from PETU Cabinet & Remove cabinet side door
2 - Remove end cover from DIN rail and slide on 1 Solid State relay & the new DC power supply. The existing terminals will need to slide over further on the DIN rail. Make sure pins 13 & 14 on relay are on the top side of the DIN Rail.
3 - Replace the end cover back on against the dc power supply on the rail
4 - Run 18 awg high voltage XLPE (300V+) wire (110-8714 ferrules) from open COM terminal to pin N on the ac/dc 5V power supply
5 - Run 18 awg high voltage XLPE (300V+) wire (110-8714 ferrules) from open terminal on PMP terminal to L1 on the ac/dc 5V power supply
6 - Remove backshell from 70 pin ecm J1 connector. Remove wires from ECM J1 pin 5, & 38, & tape off to the side.
7 - You may need to disconnect the ecm connector from the ecm for better access. (#4 metric allen wrench is needed for removal)
8 - Take harness and insert each socket into the ecm connector as marked on the harness wire lead. There will be 2 leads that plug back into 5 & 38.
- Wire A235-F8 BK plugs into J1 pin 5 of ECM
- Wire P904-F13 GN plugs into J1 pin 38 of ECM
9 - Route the harness along the existing harness to the opposite side of the cabinet to the DIN rail where the power supply and relays are mounted. The pump connection will be in the middle portion of the cabinet.
10 - Disconnect the existing PWM pump connector from the pump & plug in the new one on the provided harness. Tie back the old pump connector to the bundle on the bottom of the cabinet to secure it. (Those circuits are not energized)
11 - From the new harness, insert the ferrules on the end of the harness into the power supply and the solid state relays according to the tags. The relay is numbered in the picture below with the pin positions printed on the relays. I would recommend installing the bottom relay connections first for A1+ and A2- positions then the remaining leads
- SSR#3 = solid state relay
Bottom side of the DIN Rail Power Supply & Relay
Wire A235-F8 BK (SSR#3 A2-) plugs into the solid state relay pin A2-
Wire P904-F13 GN (SSR#3 A1+) plugs into the solid state relay pin A1+
Top side of the DIN Rail Power Supply & Relay
Wire 229-F5 BK (Power Supply V-) plugs into ? on Siemens Power supply
Wire 106-F1 WH (Power Supply V+) plugs into + on Siemens Power supply
Wire H897-F20 GY (SSR#3 14) pl