CYLINDER AS 2060521 - Caterpillar

3412 Generator Set2WJIntroduction
The new 125-5468 Heater Kit (Fuel Fired Jacket Water Heater) is now available to help engine starting in cold weather. This jacket water heater should be used whenever the ambient temperature is less than 20°C (68°F). When ambient temperatures drop below 20°C (68°F) the generator set can be hard to start and may produce unwanted white smoke until it warms up to normal operating temperatures. Installing this heater kit will help to eliminate hard engine starting and unsatisfactory white smoke.This unit is an electronically controlled, diesel fuel fired heater that operates on existing fuel and the generator set batteries. It heats the engine coolant and circulates it with an electric pump.The heater is installed on the base of the generator set and is fueled by diesel fuel from the generator fuel supply line. It is an excellent choice for locations where electricity for the 7E-6248 Electric Jacket Water Heaters is not available.The 125-5468 Heater Kit is available for field retrofits or can be installed as an attachment on new generator sets.All the necessary parts for installing the heater are in the kit. They include, a microprocessor controller, controller enclosure, mounting brackets, fuel line, exhaust pipe, valves, hoses, cables, bolts, washers, screws, clamps, and burner assembly.Do not perform any procedure, outlined in this publication, or order any parts until you have read and understood the information contained within this Special Instruction.Features of the Heater Kit
The system is designed to provide the engine with a coolant water temperature of 57 to 85°C (135 to 185°F) for easy, warm starting. By keeping the coolant water warm, it will indirectly warm the oil in the oil galleys and wear surfaces. Warm starting also reduces down-time due to cold start situations, and is designed for long-term operation with only minimal routine maintenance.The 125-5468 Heater Kit is designed with a unique self-diagnostic feature, which allows the electronic controller to display possible problems and indicate where a problem exists.The system uses a high temperature limit switch that will automatically shut down the heater in case of heater failure or if the batteries reach critical cranking voltage.Specifications
Parts Ordering
The parts listed in the chart below, must be supplied by the customer. All these parts can be ordered through Caterpillar dealers. The parts listed in Chart B are all included in the kit. All parts without Caterpillar part numbers, listed in the parts charts, can be ordered from:Phillips and Temro Industries, Inc.
9700 West 74th Street
Eden Prairie, MN 55344
Phone: (612) 941-9700
(800) 328-6108
Nomenclature For Heater Kit Parts
(Refer to Chart B for item identification.)Serviceable Parts
Burner Assembly Parts
Burner Head Assembly Nomenclature Installation Section
Mounting the Heater Unit and Control Box to the Generator Set
Install Mounting Plate (2) Using Original Bolts (1)
(A) Right side of generator as viewed from rear of engine.1. Remove two nuts, bolts, and washers (1) and install plates (2) as shown.
Mount Heater Unit To Mounting Plate
(2) Mounting plate. (3) 4B-5273 Washer. (4) Mounting washer. (5) 3B-4504 Lock Washer. (6) 6V-8185 Nut.2. Mount the heater unit onto mounting plates