2-26 82E-5 – 98E-5 SERIES
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.
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
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