Engines and maintenance procedures. The lower the tempera- tures the greater the amount of modification required, and yet with the modifications applied, the engines must still be capable of operation in warmer climates without extensive changes. way that they can be disconnected so there is little ef- fect on the engine when they are not in use. IMPORTANT: If a winterfront is used on a vehicle with an electronic engine equipped with a charge air cooler, make sure there are vertical slit open- ings to allow airflow through the core of the charge air cooler. Do not use a winterfront with a diamond-shaped opening, 12 inches by 12 inches (30.5 x 30.5 cm).
This will adversely affect the op- eration and durability of the charge air cooler. The following information is provided to engine owners, operators, and maintenance personnel on how the modifications can be applied to get satisfactory perfor- mance from their diesel engines. There are three basic objectives: Reasonable starting characteristics followed by practical and dependable warm-up of the engine and equipment. Mercedes-Benz A unit or installation which is as independent as possible from external influences. Special precautions must be taken during cold weather. For service products to use in cold weather, see Chap- ter 5 of the MBE900 Engine Operator’s Manual.
Modifications which maintain satisfactory operat- ing temperatures with a minimum increase in maintenance of the equipment and accessories. IMPORTANT: At outside temperatures below (–20°C), a coolant preheater is recommended. If satisfactory engine temperature is not maintained, higher maintenance cost will result due to increased engine wear. 1. Check for cracks in the battery cases, for corrosion of the terminals, and for tightness of the cable clamps at the terminals. Run a load test to deter- mine full or partial charging. Charge the batteries to full capacity. Replace any battery that is unable to hold full charge or is physically damaged.
Special provisions to overcome low temperatures are definitely necessary, whereas a change to a warmer climate normally requires only a minimum of revision. Most of the accessories should be designed in such a 2. Check the alternator output. Check the condition and tension of the poly-V belt. 4.20