Inspection Every 2000 Hours Or 2 Years - Takeuchi TB 175 Handbuch

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.
No.
(1) Coolant water path flushing and maintenance
(2) Fuel pipe and coolant water pipe inspection and maintenance
(3) Intake/exhaust valve seat lapping
Fuel injection timing adjustment
(4)
Fuel injection pump inspection and adjustment
(1) Coolant 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 necessary in
accordance with the coolant water replacement.
Cooling system parts: radiator, cooling water pump, thermostat, cylinder block, cylinder head, oil cooler.
(2) Fuel pipe and coolant 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. As for the inspection and adjustment of the fuel pump, it is based on the service manual of the
MP pump of the separate volume. The fuel injection timing is adjusted by the following procedure.
As for the engine, which adopts a MP type fuel injection
pump, the fuel injection angle θ
fuel injection timing adjustment.
Note) The fuel injection angle θ
difference from the injection valve opening
angle(FIR) while the fuel injection pump being
driven by a motor and the angle(FIR) at the
plunger lift 2.5mm of the fuel pump.
And, as for the actual fuel injection angle θ
measured value is recorded on the pump body by
each every fuel pump as shown in the right figure.
The engraved mark is shown by the value that 10
is mulitiplied by the injection angle θ
the below table.
(Examle)
Fuel injection angle θ
(degree, cam angle)
8.5
7.7
(R.1)
Inspection Item
(note) is adjusted for the
i
(cam angle) is the
i
, the
i
as shown in
i
i
Mark
85
77
46
Fuel injection angle
i
Nozzle lift
Cam angle
Valve opening angle (FIR)
Angle (FIT) at plunger lift 2.5 mm
Fuel injection angle
Non operation side
(Engine side)
Operation side
T.D.C
0
Engraved mark
position