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How to Replace timing chain on VW Polo 9N 1.4 FSI

Special tools

  • Dial gauge – No.VAS 6079.
  • Dial gauge holder – No.T10170.
  • Camshaft alignment tool – No.T10171.
  • Camshaft/oil pump sprocket holding tool – No.T10172.
  • Crankshaft locking tool – No.T10340.
  • Crankshaft pulley holding tool – No.3415.
  • Tensioner locking pin – No.T40011.

General precautions

  • Disconnect battery earth lead.
  • Remove spark plugs to ease turning engine.
  • Turn engine in normal direction of rotation (unless otherwise stated).
  • Observe tightening torques.
  • If fitted: Mark position of crankshaft position (CKP) sensor before removal.
  • Do NOT turn crankshaft via camshaft or other sprockets.
  • Do NOT turn crankshaft or camshaft with timing chain removed.

Valve timing procedures

How to Replace timing chain on VW Polo 9N 1.4 FSI
How to Replace timing chain on VW Polo 9N 1.4 FSI
  • Removal/installation of timing chain requires:
      • Timing chain cover removal.
      • Sump removal.

NOTE: Mark direction of rotation on chains.

  • Install dial gauge and holder in No.1 cylinder plug hole. Ensure engine at TDC on No.1 cylinder [1] .
  • Ensure timing marks on camshafts aligned as shown. If not, turn crankshaft 360° [2] .
  • Fit camshaft alignment tool [3] .

NOTE: If camshaft alignment tool cannot be inserted valve timing is incorrect.

  • Compress timing chain tensioner and lock with locking pin [4] .
  • Remove camshaft sprockets and chain.
  • Align camshafts. Use special tool [3] .
  • Install camshaft sprockets and timing chain.
  • Engines with variable valve timing:
      • Fit new bolt. Tighten inlet camshaft adjuster bolt [5] . Tightening torque: 40 Nm + 90°.

NOTE: Inlet camshaft sprocket bolt has LH thread

  • Engines without variable valve timing:
      • Tighten inlet camshaft sprocket bolt [6] . Tightening torque: 50 Nm + 90°.
  • Tighten exhaust camshaft sprocket bolt. Tightening torque: 50 Nm + 90°.
  • Tighten crankshaft pulley bolt. Tightening torque:
      • A = 150 Nm + 180°
      • B = 90 Nm + 90°

NOTE: Crankshaft pulley bolt and bolt on each camshaft sprocket MUST only be used once.

  • Remove camshaft alignment tool. Turn crankshaft two turns clockwise.
  • Check valve timing [3] .

Related Cars

4 votes

2 Comments

  1. Lloyd Lloyd

    Hi..
    Car: 2010 1.6 vw polo trendline.
    I think my hyraulic tensioner needs to be replaced.In this particular car,the tensioner is bolted onto the engine inside the timing chain cover.
    I’d like to know if the removal of the crankshaft pulley bolt would disturb the car’s timing?
    I’m not sure if the timing chain’s crank sprocket has a lock which would help in keeping the car in timing.

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