Isuzu N-Series. Service manual — part 624
6C-66 ENGINE FUEL
Engine ; 4JB1-TC
Injection pump identification No. ; 104746-6601
Adjustment specification of injection volume
Adjustment specification of timer and pump case pressure
Pump rotation
(rpm)
Average
injection quantity
(mm
3
/ST)
Uneven
amplitude
(mm
3
/ST)
Boost pressure
(kPa (kg/cm
2
))
Oil temperature
(
°C)
Remarks
500
60.5
±1.0
5.0
0
48
±2
Standard
800
67.4
±1.0
5.5
52.0 (0.531)
50
±2
Standard
800
76.8
±1.0
6.0
80.0 (0.821)
50
±2
Standard
1000
(83.8
±6.5)
80.0 (0.821)
50
±2
1250
(91.5
±6.5)
80.0 (0.821)
50
±2
1700
(105.7
±6.5)
80.0 (0.821)
50
±2
2075
34.0
±3.0
7.0
80.0 (0.821)
52
±2
Standard
375
13.9
±2.0
2.0
0
48
±2
Standard
100
60
+40
-0
0
48
±2
N6A3625E
Pump rotation
(rpm)
Timer piston stroke
(mm)
At pressure of pump
(MPa (kg/cm
2
))
Boost Pressure
(kPa (kg/cm
2
))
Remarks
1020
Below 0.5
80.0 (0.82)
1350
1.8
±0.2
471
±29 (4.8±0.3)
80.0 (0.82)
Standard
1500
(3.0
±0.4)
80.0 (0.82)
1800
4.5
+0.4
-0.3
80.0 (0.82)
ENGINE FUEL 6C-67
Potentiometer adjustment
N6A3626E
Pump speed
(r/min)
Out-put voltage
(V)
Average injection
quantity
(mm
3
/st)
BoostPressure
(kPa (kg/cm
2
))
Remarks
1080
3.56
±0.03
27.5
±2.0
0
Standard
375
(0.93
±0.45)
13.9
±2.0
0
Standard
N6A3622E
6C-68 ENGINE FUEL
FUEL TANK
Component
Legend
1. Evaporator fuel hose
5. Band
2. Fuel feed hose
6. Fuel tank
3. Fuel return hose
7. Frame
4. Fuel gauge unit connector
N6A3472E
ENGINE FUEL 6C-69
Removal
Preparation:
• Disconnect battery ground cable.
• Loosen fuel filler cap.
• Drain fuel from drain plug.
• After the drain fuel, tighten the drain plug to the
specified torque.
Tighten:
29 N
⋅m(3 kg⋅m/22 lb⋅ft)
1. Evaporator Fuel Hose
2. Fuel Feed Hose
3. Fuel Return Hose
• Plug the hose to prevent fuel from getting spilt, and
tie it to the frame with the plugged end up.
4. Fuel Gauge Unit Connector
• Remove the connector of the fuel gauge.
5. Band
• Remove the nut of the fuel tank fixing band, and
then remove the band end on the frame side.
6. Fuel Tank
• Pull out the fuel tank to the outside.
Notice:
When it is not possible to pull out the fuel tank, remove
the bracket and then draw out the fuel tank downward.
Installation
1. Fuel Tank
Notice:
When the bracket was removed to take off the fuel tank,
install the bracket to the frame and tighten it to the spec-
ified torque.
Tighten:
55 N
⋅m(5.6 kg⋅m/41 lb⋅ft)
When mounting the fuel tank on the bracket, be sure to
place the packing section pasted on the fuel tank se-
curely on the bracket.
2. Band
• Tighten the band to the specified torque.
Tighten:
12 N
⋅m(1.2 kg⋅m/104 lb⋅ft)
3. Fuel Gauge Unit Connector
• Connect the fuel gauge unit connector.
4. Fuel Return Hose
5. Fuel Feed Hose
• Set the hose to the pipe more than 25 mm (0.98 in)
deep.
6. Evaporator Fuel Hose
• Fill the fuel to the fuel tank.
• Connect battery ground cable.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст