2. INSPECTION AND ADJUSTMENT 2.2.7 Inspection every 2000 hours or 2 years Be sure to check the following points every 2,000 hours or two years operation, whichever comes first. (1) Cooling water path flushing and maintenance Rust and water scale will accumulate in the cooling system through many hours of operation. This lowers the engine cooling effect. Oil coolers (attached to turbocharged engines and some of naturally aspirated engines) quickly deteriorate the lube oil. The cleaning and maintenance of the following parts are neces- sary in accordance with the cooling water replacement. Cooling system parts:
radiator, cooling water pump, thermostat, cylinder block, cylinder head, oil cooler. (2) Fuel pipe and cooling water pipe inspection and maintenance Regularly check the rubber hoses of the fuel system and cooling water system. If cracked or degraded, replace them with new one. Replace the rubber hoses at least every 2 years even if 2,000 hours doesn't come. (3) Intake/exhaust valve seat lapping The adjustment is necessary to maintain proper contact of the valves and seats. Refer to 4.2.6 in Chapter 4.
(4) Fuel injection timing adjustment / Fuel injection pump inspection and adjustment The fuel injection timing and the fuel injection pump are adjusted so that engine performance may become the best condition. The fuel injection timing is adjusted by the following procedure. The fuel injection angle i (note) is adjusted for the fuel injection timing adjustment, because the adjusting method of fuel injection timing like an inline fuel injection pump can't be applied. Note) The fuel injection angle i (cam angle) is the difference from the injection valve opening angle while the fuel injection pump being driven by a motor and the angle at the plunger lift 2.5mm of the fuel injection pump.
And, as for the actual fuel injection angle i , the mea- sured value is recorded on the pump body by each every fuel injection pump. The adjustment of fuel injection angle i In case that a fuel injection pump cover, installed with a gear case cover and the fuel injection pump are removed, and reassembled, the pro- cedure of fuel injection angle adjustment is as follows. (As for the disassembly of a fuel injec- tion pump, refer to 7.2.3 in chapter 7.) [NOTICE] Never loosen four flange bolts, which fasten a pump flange and a fuel injection pump drive gear at the time of the removal of the fuel injec- tion pump.
When it is loosened, the adjustment of the fuel injection timing becomes very difficult. 2-26 82E-5 – 98E-5 SERIES No. Inspection Item (1) Cooling water path flushing and maintenance (2) Fuel pipe and cooling water pipe inspection and maintenance (3) Intake/exhaust valve seat lapping (4) Fuel injection timing adjustment Fuel injection pump inspection and adjustment