TOHATSU MD 30B2 Service Manual page 120

Fuel System (TLDI)
How to Use Pressure Gauge
1. Pressure Gauge Ass'y
Measurement of Fuel Pressure and Air Pressure
1. Set the lever (3T5-72883-0) to position "A" shown below.
2. Screw adapter B (3T5-72884-0) into a valve of air rail for measuring air pressure or fuel pressure.
Be careful of fuel that spur ts when
screwing the adapter into the fuel pressure
measuring valve.
3. Turn key switch from "OFF" to "START" position to crank the engine for approximately 15 seconds. (Run the engine
for 15 seconds at idling speed of 700 r/min.)
4. The fuel system and air system are normal when the gauge indicates specified air and fuel pressures.
(If the measurement of the pressure is out of the specified range, troubleshoot by referring to this service manual.)
Pressure Measurement
AIR PRESSURE
FUEL PRESSURE
5. After the measurement, set the key switch to "OFF", cock lever to position "B" to release the inner pressure, and then,
remove adapter B from the measuring valve.
After measuring the fuel pressure, use a container to catch fuel that flows out from the tip of hose when the cock
lever is set to position "B" (open). Bring cock side below the valve to drain fuel completely from the hose before
removing adapter B.
4-40
WARNING
Typical Value
0.65 MPa (94.3 psi) [6.5 kgf/cm
0.72 MPa (104.4 psi) [7.2 kgf/
cm ]
2
A
B
Specified Range of Pressure
0.61 - 0.58 MPa (88.47 - 101 53 psi)
]
2
[6.1 - 7.0 kgf/cm ]
2
Air pressure
+0.06 - 0.08 MPa
(8.70 - 11.60 psi) [0.6 - 0.8 kgf/cm
Remarks
The pressure reduces
gradually after stopping
the cranking.
]
2
TLD D30/40/50B2 2013