Brand:
Toyota
Model Name:
Yaris NCP90 91 92 93
Manual:
Repair Manual
Section:
1Nz-Fe Engine Control System
Title:
Camshaft Timing Oil Control Valve Assembly
1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
![]() |
Apply a light coat of engine oil to a new O-ring and install it onto the camshaft timing oil control valve assembly.
- NOTICE:
- Do not twist the O-ring.

Install the camshaft timing oil control valve assembly with the bolt.
- Torque:
- 7.5 N*m{76 kgf*cm, 66 in.*lbf}

Connect the camshaft timing oil control valve assembly connector.
2. INSTALL FAN BELT ADJUSTING BAR
![]() |
Provisionally install the fan belt adjusting bar with the bolt and nut.
Tighten the nut to the specified torque.
- Torque:
- 11 N*m{112 kgf*cm, 8.1 ft.*lbf}
3. INSTALL FAN & GENERATOR V BELT
Provisionally install the fan and generator V belt onto each pulley.
- NOTICE:
- Make sure that there is no foreign matter or liquid, such as oil, on the belt and pulleys.
- Make sure that the V belt is securely fitted into the rib grooves of the pulley.
4. ADJUST FAN & GENERATOR V BELT

Insert an adjusting bar between the engine mounting bracket and generator assembly. Pull the adjusting bar towards the vehicle front to adjust the generator V belt tension.
- NOTICE:
- Do not insert the adjusting bar between the camshaft timing oil control valve assembly and generator assembly. It could damage the camshaft timing oil control valve assembly.

First tighten bolt A, then tighten bolt B.
- Torque:
- 19 N*m{189 kgf*cm, 14 ft.*lbf} for bolt A
- 54 N*m{551 kgf*cm, 40 ft.*lbf} for bolt B
5. INSPECT FAN & GENERATOR V BELT

Check the V belt deflection and tension.
- Deflection:
Item Specified Condition New belt 8.0 to 9.0 mm (0.31 to 0.35 in) Used belt 12.5 to 13.5 mm (0.49 to 0.53 in)
- Tension:
Item Specified Condition New belt 700 to 800 N (71 to 82 kg, 157 to 180 lb) Used belt 300 to 400 N (31 to 41 kg, 67 to 90 lb)
- HINT:
- Perform the V belt inspection and adjustment while the engine is cold.
- V-ribbed belt tension and deflection should be checked immediately after installation of a new belt, and after cranking the engine when inspecting a used belt.
- Check the V belt deflection at the point between the specified pulleys where the deflection is greatest.
- When installing a new belt, set its tension to the intermediate value of the specification.
- When inspecting a belt which has been used for over 5 minutes, apply the Used Belt specifications.
- When reinstalling a belt which has been used for over 5 minutes, adjust its deflection and tension to the intermediate values of each Used Belt specification.
- V-ribbed belt tension and deflection should be checked after 2 revolutions of engine cranking.
- When using a belt tension gauge, confirm its accuracy by using a master gauge first.
6. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
- Torque:
- 5.4 N*m{55 kgf*cm, 48 in.*lbf}
7. CHECK FOR ENGINE OIL LEAKAGE
8. INSTALL CYLINDER HEAD COVER NO. 2
![]() |
Tighten 2 A nuts, then 2 B nuts .
- Torque:
- 7.0 N*m{71 kgf*cm, 62 in.*lbf}
9. INSTALL ENGINE UNDER COVER RH
10. INSTALL ENGINE UNDER COVER SUB-ASSEMBLY (for Rough Road Area Specification Vehicles)


