Toyota Prius timing chain

Toyota Prius timing chain

For the 2010 Toyota Prius (both Gen II and Gen III models, with the 1.8 L 2ZR‑FXE hybrid engine), here are the official torque specifications and installation details for the timing chain and related components:

⚙️ Camshaft Timing Sprocket & Gear

From the 2ZR‑FXE engine manual:

• Inlet & exhaust camshaft sprocket flange bolts: 54 N·m (40 ft·lbf) (workshop-manuals.com, charm.li)

🔧 Timing Chain Tensioner

The tensioner assembly uses two bolts:

• Timing chain tensioner nuts: 12 N·m (9 ft·lbf)

Vibration Damper Bolt

For the No. 1 vibration damper that preloads the chain:

• Chain damper bolts: 21 N·m (15 ft·lbf) (scribd.com)

⛓️ Timing Chain Cover

Bolt torques vary by position:

• Bolts A, E, F: 26 N·m (19 ft·lbf)
• Bolts B, C: 51 N·m (38 ft·lbf)
• Bolt D: 10 N·m (7 ft·lbf) (charm.li)

📏 Bolt Torque Summary

🔧 Installation Overview:

1. Align cam sprockets and crank per factory match marks.
2. Install chain vibration damper, torque to 21 N·m.
3. Set tensioner plunger, then bolt the tensioner to 12 N·m.
4. Secure the timing cover following the torque chart.
5. Finish with the cam sprocket bolts torqued to 54 N·m.

🧰 Pro Tips & Community Notes

• The **tensioner is a common oil-seep point, though not always a failure; many Prius owners report mild seepage without needing full replacement (reddit.com, scribd.com, workshop-manuals.com, reddit.com, manualslib.com, reddit.com).
• Chain wear is uncommon—Prius timing chains are durable. A loose chain on inspection isn’t necessarily bad—tensioners often preload slack at first .
• If replacing the chain or tensioner, re-check timing marks carefully and torque bolts precisely as per the chart above.

📚 Additional Resources

• Factory torque specs from garage.wiki’s 2010 Prius engine guide (garage.wiki)
• Toyota workshop manual screenshots for sprocket and tensioner specs (workshop-manuals.com)

✅ Summary

For the 2010 Prius (2ZR‑FXE 1.8 L hybrid) timing chain assembly, the key torques are:

• Cam sprocket bolts: 54 N·m
• Tensioner nuts: 12 N·m
• Damper bolts: 21 N·m
• Timing cover bolts: 10–51 N·m by position

Proper bolt torque plus correct timing alignment ensures a reliable, smooth-running hybrid powertrain.

Toyota Prius 2010 timing chain manual PDF

Toyota Prius 2006 timing chain installation

Here’s a comprehensive guide for 2006 Toyota Prius (1NZ‑FXE 1.5 L hybrid, Gen I~II) timing chain installation, based on factory service manual specs and verified procedures:

🛠️ 1. Timing Chain Cover & Water Pump Bolts

Install evenly in several passes, following bolt length order:

Additionally, after installing the cover, mounting bracket bolts: 55 N·m (41 ft·lbf) (workshop-manuals.com, charm.li).

• Cover installation must be completed within 3 minutes of applying sealant.
• Afterward, install the water pump and bracket within 15 minutes.
  (id.scribd.com, workshop-manuals.com)

⛓️ 2. Chain Tensioner & Guide

• Tensioner/slipper bolt: 19 N·m (14 ft·lbf) (auto-master.su)
• Timing chain guide bolt (upper guide): 9 N·m (80 in·lbf) (auto-master.su)

🔧 3. Chain Vibration Damper & Oil Pump Sprocket

• Damper bolt: 9 N·m (80 in·lbf)
• Oil pump sprocket nut: 30 N·m (22 ft·lbf) (rotate crank +90° after) (justanswer.com)

🎛️ 4. Crankshaft Pulley & Sensor

• Crank pulley bolt: 128 N·m (94 ft·lbf) (workshop-manuals.com)
• Crank position sensor plate bolts: A: 7.5 N·m, B: 11 N·m (workshop-manuals.com)

✅ Installation Overview

1. Align crank to TDC using crank key ▲ up.
2. Fit the timing chain sub‑assembly: align colored link(s) to cam/crank sprocket marks.
   (tcamanual.com)
3. Install oil pump sprocket and torque nut to 30 N·m, then rotate crank 90°.
   (charm.li)
4. Fit tensioner slug/slipper guide—torque bolts: guide 9 N·m, tensioner 19 N·m.
   (auto-master.su)
5. Mount vibration damper at 9 N·m.
6. Install chain cover + pump, torque bolts per chart.
7. Bolt down crank pulley to 128 N·m, then reinstall sensor and bracket at appropriate torques.

🧠 Special Notes

• After sealant is applied, all components must be installed within strict time frames to avoid seal failure.
  (workshop-manuals.com, workshop-manuals.com)
• Retain proper chain tension by supporting backlash on tensioner side.
• Rotate engine at least two full turns by hand to check timing marks realign & tensioner resets properly.

🧾 Summary Table

Toyota Prius 2006 timing chain installation PDF