Takeuchi TB 175 Handbuch Seite 757

2. Inspection and adjustment
Nozzle valve
2-valve head
(b)Spray pattern inspection
After adjustment to the specified valve opening
pressure, use a nozzle tester and check the spray
pattern and seat oil-tightness.
Seat oil tightness check
• After injecting a few times, increase the pressure
gradually. Hold the pressure for about 5 seconds at a
little before the valve opening pressure of
1.96 MPa (20 kgf/cm
does not drip from the tip end of the nozzle.
• If extreme oil leak from the overflow joint exists dur-
ing injection by the nozzle tester, check after retight-
ening. If much oil is leaking, replace the nozzle
assembly.
[Informative: Fuel injection valve structure]
F.O. return pipe joint
Nozzle holder
Pressure adjusting shim
Nozzle spring
Nozzle spring seat
Valve stop spacer
Nozzle
Nozzle body
Nozzle case nut
Tightening torque:
39.2 to 44.1 Nm (4 to 4.5 kgf m)
2
), and check to see that oil
Nozzle holder
Pressure adjusting shim
Nozzle spring
Nozzle spring seat
Valve stop spacer
Nozzle valve
Nozzle body
Nozzle case nut
Tightening torque:
39.2 to 44.1 Nm (4 to 4.5 kgf m)
4-valve head
Normal
Uniform spray pattern from each nozzle
44
Nozzle