Isuzu NHR 4J Series Workshop Manual page 173

6A1 – 38 4JB1/4JB1T/4JB1TC/4JG2 - ENGINE
2. Heater Hose
• Disconnect heater hose from heater pipe.
3. A/C Compressor Drive Belt
• Loosen idler lock nut.
• Loosen adjust bolt and remove drive belt.
4. Engine Harness
• Disconnect harness connectors from units on
thermostat housing.
5. Air Intake Duct
• Remove the clip and air intake duct.
6A1-38-1.tif
6. Injection Pipe
• Release injection pipe clip.
• Remove flare nut injection pump side.
• Remove flare nut injection nozzle side and remove
injection pipe.
NOTE:
Plug the injection nozzle holder and the delivery
holder to prevent the entry of foreign matters into
them.
7. Leak Off Pipe
• Remove the leak off pipe side of leak off hose.
8. PCV Hose
• Remove the PCV hose from air intake pipe.
6A1-38-2.tif