Isuzu N-Series. Manual - part 498
Engine Mechanical (4HK1-TC) 6A-97
• Use a scale or other equipment to inspect
whether the flexure of the belt when it was
pushed by hand with pressure of 98 N (22 lb) is
within the designated range.
• Tighten the locknut of the tension pulley with
the designated torque after adjusting the
tension of the belt.
Tighten:
Lock nut to 27 N
⋅m (2.8 kg⋅m/20 lb⋅ft)
Legend
1. Tension Pulley Lock Nut
2. Tension Pulley Adjusting Bolt
28. Install the intake pipe.
• Install the bolt and clip band, tighten the bolt
with the designated torque.
Tighten:
Bolt to 10 N
⋅m (1.0 kg⋅m/87 lb⋅in)
•
• Install the fan guide bracket.
29. Install the EGR valve and EGR cooler.
For details of installation, refer to “EGR Valve and
EGR Cooler” in Section 6F.
Legend
1. EGR Adapter
2. Water Return Pipe
3. EGR Cooler
4. EGR Pipe
5. Water Feed Pipe
30. Install the oil level gauge and guide tube.
31. Install the exhaust pipe.
• Install the front exhaust pipe and tighten with
the designated torque.
Tighten:
Nuts to
Exhaust manifold side: 67 N
⋅m (6.8 kg⋅m/49 lb⋅ft)
Exhaust brake side: 17 N
⋅m (1.7 kg⋅m/13 lb⋅ft)
32. Install the engine harness.
33. Replenish the coolant.
A/C belt flexure
mm (in)
New belt
16 (0.63) – 20 (0.79)
Reused belt
18 (0.71) – 22 (0.87)
N6A6122E
N6A6121E
N6A6025E