Isuzu KB P190. Manual - part 635

Engine Mechanical – V6 

Page 6A1–61 

 

3.7 

Accessory Drive Belt Tensioner 
Assembly 

Remove 

1 

Remove the accessory drive belt, refer to 3.5 

Accessory Drive Belt. 

2 

Remove the three bolts (2) attaching accessory drive 
belt tensioner assembly (1). 

3 

Remove the accessory drive belt tensioner assembly.

N O T E  

The accessory drive belt tensioner pulley is not 
serviced separately. If the pulley is found to be 
faulty, the entire tensioner assembly must be 
replaced. 

 

Repairing a damaged accessory drive belt 
pulley should not be attempted under any 
circumstances. 

 

Figure 6A1 – 32 

Reinstall 

Reinstallation of the accessory drive belt tensioner assembly is the reverse of the removal procedure. Tighten the bolts to 
the correct torque specification. 

Accessory drive belt tensioner 
attaching bolt torque specification......................50.0 Nm 

 

 

Engine Mechanical – V6 

Page 6A1–62 

 

3.8 

Power Steering Pump Bracket 

Remove 

1 

Remove the power steering pump and reservoir, refer to 3B_Steering. 

2 

Remove the three bolts (1), (3) and (4) attaching the power steering pump bracket (5) to the engine block. 

3 

Remove the power steering pump bracket. 

 

Figure 6A1 – 33 

Reinstall  

Reinstallation of the power steering pump and pump bracket is the reverse of the removal procedure, noting the 
following: 

1 

Hand start the bolts before tightening. 

2 

Tighten the bolts to the correct torque specification. 

Power steering pump bracket 
attaching bolt torque specification......................22.0 Nm 

 

 

3.9 

Upper Intake Manifold 

The intake manifold comprises of an upper and lower section. Some service procedures only require the removal of the 
upper intake manifold (e.g. fuel injector/spark plug servicing), while other service procedures require the removal of both 
the upper and lower manifold as a complete assembly (e.g. cylinder head/s). If the complete assembly needs to be 
removed, refer to 3.10 

Intake Manifold Assembly – Complete. 

 

Engine Mechanical – V6 

Page 6A1–63 

 

Remove 

 

Disconnection of the battery affects certain 
vehicle electronic systems. Refer to 1.1 

 

WARNING, CAUTION and NOTES before 
disconnecting the battery. 

 

 

 

1 

Disconnect the battery negative terminal. 

2 

Remove the air intake duct (1) and hose (2),  refer to 
6C1-3 Engine Management – V6 – Service 
Operations. 

 

Figure 6A1 – 34 

Engine Mechanical – V6 

Page 6A1–64 

 

3 

Retract the throttle body wiring connector lock (3). 

4 

While pressing the connector latch in the direction of 
the arrow (4), disconnect the throttle body wiring 
connector. 

5 

Disconnect the throttle body connector wiring harness 
from its retaining clip (5). 

6 

Remove the main wiring harness retainer pin (6) from 
the intake manifold by pushing from the front to the 
rear using a suitable piece of 5 mm steel rod (or an 
Allen key). 

 

The following precautions must be followed 
when disconnecting the throttle body wiring 
connector: 
• 

Do not use any mechanical device such 
as a screwdriver to disengage the 
harness connector (1) from the throttle 
body (2). 

• 

When retracting the throttle wiring 
connector lock (3), take care not to 
disengage the lock from the connector. 

• 

Do not pull on the connector wires. 

• 

Take care not to break the barbed 
harness retainer pin (6) while removing 
the harness retainer from the intake 
manifold. 

• 

Should the pin be broken, then it is 
vital that a new harness retainer is 
fitted to the wiring harness shield. If 
not, the harness will foul the engine 
drive belt. 

 

Figure 6A1 – 35 

7 

Disconnect the brake booster hoses from the upper 
intake manifold: 

 

Figure 6A1 – 36