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Why dose a crankshaft not go to tdc. - Cars & Trucks

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Crankshafts all go to TDC, but don't necessarily rest there when the engine has stopped. This is due to engine internal resistances which stop the engine after power has been suspended.

Posted on Nov 04, 2012

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I require a circuit diagram how to set my polo vivo 1.4 16v timing chain


THESE ARE THE TOOLS U NEED TO HAVE AND PROCEDURE!!GOOD LUCK AND BEWARE THE TIMING..REPLACE BOTH CHAIN AND TENTIONER!!!!!!

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Special tools and workshop equipment required
t Dial gauge -VAS 6079-
t Puller -T10094 A-
t Dial gauge adapter -T10170-
t Camshaft clamp -T10171-
t Counterhold tool -T10172-
t Locking pin -T40011-
t Spark plug spanner -3122 B-
t Counterhold tool -3415-
t Torque wrench (5...50 Nm) -V.A.G 1331-
Procedure
- Remove valve timing housing > Chapter.
- To turn crankshaft, reinstall bearing bush, crankshaft pulley -2- and crankshaft bolt -3- and securely tighten crankshaft bolt (use counterhold 3415).
- Remove spark plug from No. 1 cylinder. Use puller -T10094 A- and spark plug wrench 3122 B.
- Screw dial gauge adapter -T10170- into spark plug hole to stop.
- Screw dial gauge -VAS 6079- and extension -T10170/1- in to stop and lock in position with lock nut -arrow-.
- Turn crankshaft in direction of engine rotation, to TDC No. 1 cylinder. Note position of small needle on dial gauge.
- Then turn crankshaft back 45° opposite direction of engine rotation.
- Press tensioning guide rail -1- in direction of arrow and lock piston with locking pin -T40011-.
- Mark direction of rotation of timing chain -3- using felt-tip marker.
- Remove bolts -2- and remove camshaft sprocket -1- with timing chain -3-. Counterhold using counterhold tool -T10172-.
- Renew bolts -2-. Tighten bolt -2- to 50 Nm (use counterhold -T10172-).
- Turn inlet and exhaust camshafts until camshaft clamp -T10171- can be pushed into holes in camshaft to stop.
Locking pins -arrows 1- must engage in holes -arrows 2-. Inscription "TOP"-arrow 3- must be readable from above.
Note
Camshafts must not be pushed axially whilst turning.
- Install a M6 bolt -arrow- hand-tight (do not tighten) to secure camshaft clamp -T10171-.
- Remove camshaft sprocket bolts. It is absolutely necessary to use counterhold tool -T10172- for this.
Note
Camshaft clamp -T10171- must not be used as a counterhold tool.
- Remove one camshaft sprocket.
- Place timing chain over camshaft sprockets, observing chain direction of rotation, and install camshaft sprocket again.
- Tighten camshaft bolts until camshaft sprockets can still just be turned on camshafts.
- Tension timing chain by removing locking pin -T40011-.
- Turn crankshaft in engine direction of rotation to TDC No. 1 cylinder. Permissible deviation from TDC No. 1 cylinder: ±0.01 mm.
Note
If crankshaft is turned more than 0.01 mm past TDC, then turn crankshaft back 45° against engine direction of rotation. Then turn crankshaft in direction of engine rotation to TDC No. 1 cylinder.
- Hold camshaft sprockets -1- and -4- in this position with counterhold -T10172- then tighten bolts -2- to 50 Nm.
Note
Crankshaft must not move and timing chain -3- must remain tensioned on both sides when tightening camshaft bolts.
- Remove camshaft clamp -T10171-.
- Turn crankshaft two rotations in direction of engine rotation to TDC No. 1 cylinder. Permissible deviation from TDC No. 1 cylinder: ±0.01 mm.
- Insert camshaft clamp -T10171- to stop in camshaft openings.
If camshaft clamp -T10171- cannot be fitted
- Repeat adjustment.
If camshaft clamp -T10171- can be fitted
- Remove camshaft clamp -T10171-, hold camshaft sprockets with counterhold tool -T10172- and tighten bolts -2- a 1/4 turn (90°) further with a rigid wrench.
Note
Camshaft sprockets must not move on camshaft whilst tightening.
- Turn crankshaft two rotations again, in engine direction of rotation, to TDC No. 1 cylinder. Permissible deviation from TDC No. 1 cylinder: ±0.01 mm.
- Insert camshaft clamp -T10171- to stop in camshaft openings.
If camshaft clamp -T10171- cannot be fitted
- Repeat adjustment.
Further assembly is basically the reverse of the dismantling procedure. In the process, note the following:
t Installing valve timing housing > Chapter.
t Installing poly V-belt > Chapter.
t Renew oil seals for camshaft sealing cover and oil them before fitting.

Mar 06, 2015 | 2010 Volkswagen Polo 1.4

1 Answer

1995 GMC sonma valve adjustement


you cannot adjust all the valves on tdc; only certain ones and then you have to change the position of the crankshaft again for the rest. google the procedure.

Feb 27, 2013 | 1995 GMC Sonoma

1 Answer

I have an ed falcon i have recently taken dizzy out to clean. now im having troble figuring out timming . Am i at tdc or 180 out????? Is there a mark on cam gear and dose the rotor point directly to number...


Find the end of the plug wire for cylinder 1. Place the plug wire into the distributor cap. Rotate the Crankshaft until Cylinder #1 is TDC. align the rotor in the distributor cap with plug wire number 1.

Oct 12, 2012 | Cars & Trucks

1 Answer

How do I fix a Interruption in TDC #1 sensor circuit problem on a 2001 Honda Civic? THe code is P1361 and P1362


P1361 is a misfire code, and P1362 is a TDC sensor (or crankshaft position sensor) code. The known possible repair is to replace the crankshaft position sensor. You may have to ask for a tdc sensor as some parts providers follow the mfr's part name.

Sep 08, 2011 | 2002 Honda Civic

1 Answer

We are needing a 1996 Saturn SL2 timing settings and something to show us where to find the marks. Can you help?


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Fig. 1: At 90 degrees past TDC, the crankshaft sprocket timing mark and keyway will align with the main bearing cap split line.


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Fig. Insert the timing pin to ensure that the camshaft is at No. 1 TDC-SOHC engine


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Fig. : When the camshaft is at TDC, rotate the crankshaft counterclockwise 90 degrees to achieve TDC


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Fig.: Insert the timing pins to verify that the camshafts are at TDC


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Fig. : Make sure that the silver link plates and reference marks are all in alignment as shown


Hope help with this (remember comment and rated this).

Apr 13, 2010 | 1996 Saturn SL

2 Answers

I am planning to replace the timing belt on my daughter's 95 Corolla and was wondering what I need to align where before removing the belt eg How do I find TDC? Camshaft pulley and Crankshaft pulley...


TDC is top dead center/ remove spark plug on cylinder no. 1/ rotate the crankshaft pulley using a socket wrench and power handle and check if the piston on your cylinder no. 1 reach the top center that is TDC/ remove timing belt cover and locate a synchronized marking on your camshaft and crankshaft pulley/ remove old timing belt/ install a new one but make sure that the mark on your camshaft and crankshaft is perfectly synchronized before putting the cover/ manually rotate the crankshaft pulley again and see if it rotates 360 deg. freely then you can be sure you did the job correctly.

Apr 06, 2010 | 1995 Toyota Corolla

2 Answers

Cam Crankshaft timing


8 degrees before tdc

Mar 10, 2010 | 1983 Chevrolet Chevy

2 Answers

1990 LEXUS LS400 T-SHIRT GOT CAUGHT BETWEEN TIMING BELT AND CAMSHAFT GEAR(DONT ASK I STILL CANT GET OVER IT)ANYHOW i GOT THE SHIRT OUT BUT WHEN I GO AND PUT THE CRANK AT 0 AND THE ROTOR POINTING AT THE #1...


take the timing belt off reset the crank at 0 with # 1 piston at TDC ensure that both cams are up at twelve 'oclock with belt on, when the tension is released and the tensioner is tightened turn the crank atleast 360 degrees and ensure that the timing does not shift before starting engine

Aug 19, 2009 | 1990 Lexus LS 400

4 Answers

1999 Plymouth Breeze 2.0 SOHC I just replaced the timing belt because the old one had not broke but rather had eaten off all the teeth so the timing was off. I set the timing mark on the crank to TDC...


When changing the timing belt you need to place the cam shaft a TDC( clock wise), then rotate the crankshaft to TDC (clockwise), then back off the crankshaft (counter clockwise) THREE TEETH then back (clockwise) 1/2 tooth before TDC place your timing belt arround the crankshaft- water pump- and camshaft finally putting arround the tensioner pulley, holding 25 flbs of torque on the tensioner pulley to get the correct tension then push up on the hydrolic tensioner and tighten and you should have it.... rotate the crankshaft twice, if the camshaft pulley ends back on TDC then you have it correct.

Nov 29, 2008 | Plymouth Breeze Cars & Trucks

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