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Old 06-03-2007, 05:41 PM   #1
msgrape
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Default Timing Chain

2005 Saturn Vue - husband and son trying all day to replace timing chain. Problem is the tools we have dont seem to work in the engine. Anyone have any tips to do this?? Thanks

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Old 06-03-2007, 06:21 PM   #2
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2006 VUE 3.5L
Default Re: Timing Chain

Why would you replace the timing chain on an Ecotec 4cyl? Did it break?

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Old 06-03-2007, 06:42 PM   #3
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Default Re: Timing Chain

No it did not break, but Vue was making sounds in front passenger end and oil was gone....upon examination, timing chain was real loose and we are thinking that is what the noise and problems is. Any ideas? Thanks.

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Old 06-03-2007, 07:35 PM   #4
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Default Re: Timing Chain

Can you be more specific as to what point in the process you are? What is or is not working? Chain not coming off? Not going on? Things not lining up? There are a lot of points in the process and two timing chains in there.

Keep in mind that the crank pulley bolt and the cam shaft bolts are torque to yield and should not be reused.

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Old 06-03-2007, 11:30 PM   #5
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Default Re: Timing Chain

Finally got the timing chain out after a few hours - husband was working blind, did not have a workshop manual and not the right tools. Got a new timing chain from NAPA. Picking up a new tensioner from Saturn along with new bolts and will try for reassmbly tomorrow. Any helpful hints?? Thanks to all who posted.

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Old 06-04-2007, 01:59 AM   #6
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Default Re: Timing Chain

...How was this not covered under warranty?

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Old 06-04-2007, 08:28 AM   #7
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Default Re: Timing Chain

Past 36K miles?

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Old 06-04-2007, 08:13 PM   #8
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Default Re: Timing Chain

Copy and paste from the service manual.

Timing Chain, Sprockets, and/or Tensioner Replacement
Tools Required
J 38122-A Crankshaft Pulley Holder

J 43405 Engine Support Fixture Adaptor

J 44811 Accessory Belt Tensioner Unloader

SA9105E 3-Bar Engine Support Fixture

SA9127E Gage Bar Set

J 39914 Serpentine Belt Tension Unloader

J 45027 Tensioner Tool

Removal Procedure


Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
Disconnect the intake air temperature (IAT) sensor connector.
Loosen the clamp at the air cleaner assembly.
Remove the push pin attachment from the outlet resonator/duct assembly to the support bracket.
Loosen the clamp at the throttle body assembly.
Disconnect the positive crankcase ventilation (PCV) fresh air vent hose at the cam cover.
Remove the outlet resonator/duct assembly.
Remove the air cleaner assembly hold-down bolt.
Remove the air cleaner assembly.

Remove the ignition module bolts.
Remove the ignition module assembly.

Disconnect the de-gas hose at the clamp at the cylinder head and unclip from the fuel rail. Position away from the cam cover assembly.
Disconnect the ground strap at the rear of the cam cover assembly.

Relieve the fuel system pressure.
Disconnect the after the pressure has been relieved.

Disconnect the fuel rail bracket and bolt at the rear of the cam cover.

While supporting the fuel rail assembly with an open end wrench, loosen the transfer line fitting at the fuel rail.

Position the fuel line away from the cam cover assembly.
Remove the cam cover assembly bolts.
Remove the cam cover assembly.
Remove the No. 1 cylinder spark plug. Refer to Spark Plug Replacement .
Rotate the crankshaft in the engine rotational direction clockwise, until the No. 1 piston is at top dead center (TDC) on the compression stroke.

Remove the upper timing chain guide.

Important: The timing chain tensioner must be removed to unload the chain tension before the timing chain is removed. If not removed, the timing chain will become cocked and it will be difficult to remove.

Remove the timing chain tensioner.

Remove the fixed timing chain guide access plug.
Using a magnetic socket, remove the upper fixed guide bolt.

Install the set up for SUV application.

Remove the right-hand engine mount-to-bracket bolts.
Remove the right-hand mount assembly nuts.
Remove the right-hand engine mount assembly.

Remove the right-hand mount bracket.
Remove the right-hand engine mount bracket.
Raise the vehicle on a hoist.
Remove the right wheel and splash shield.
Important: Do not rest the engine assembly on the oil pan plug outside of the oil pan near the crankshaft or an oil leak may result.

Install the block of wood 1 x 2 x 4 between the oil pan and the cradle.
Install the J 44811 .
Remove the accessory drive belt.
Remove the tensioner bolt. To remove the bolt, an access hole has been provided through the inner and outer engine rail.

Remove the tensioner assembly.

Install the J 38122-A .

Important: The crankshaft balancer pulley bolt head and washer assembly prevents oil leakage at the center of the pulley. Do not damage the sealing surfaces. If the pulley cannot be removed by pulling with the hand, use a three-jaw puller.

Remove the crankshaft balancer pulley bolt and pulley.
Discard the pulley bolt.

Important: To avoid damage to the front cover assembly, do not pry against the cover.

Remove the front cover assembly bolts.
Remove the lower water pump assembly bolt.
Remove the front cover assembly and gasket.

Remove the adjustable guide bolt.

Remove the lower fixed guide bolt.
Remove the fixed guide.

Use a 24 mm wrench to hold the camshaft assembly while removing the exhaust sprocket bolt. Discard the bolt.
Remove the exhaust sprocket.

Remove the adjustable guide through the top of the cylinder head.

Use a 24 mm wrench to hold the camshaft assembly while removing the intake sprocket bolt. Discard the bolt.
Remove the intake sprocket.
Remove the timing chain assembly through the top of the cylinder head.
Remove the timing chain drive sprocket from the crankshaft.

Remove the timing chain oiler nozzle and bolt.
Clean the oil nozzle orifice on the block to remove any debris.

Important: Replace the timing chain guides if the wear exceeds 1.12 mm (0.045 in).

Inspect the timing chain guide for wear.
Inspect the timing chain and the sprockets for signs of excessive wear, chipping, or seizure to links on the chain.
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.


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Old 06-04-2007, 08:14 PM   #9
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Default Re: Timing Chain

Installation

Install the timing chain oiler nozzle and the bolt, then tighten.
Tighten
Tighten the timing chain oil nozzle bolt to 10 Nm (89 lb in).

Install the timing chain drive sprocket to the crankshaft.

Notice: Set crankshaft to 60 degrees before top-dead center or after TDC to prevent valve to piston contact.

Using the dampener, rotate the crank so that the mark on the timing chain drive sprocket is at 5 o'clock position.
Set the crankshaft to 60 degrees before the top dead center.

Position the exhaust camshaft with the offset slot to 2 o'clock position.

Position intake camshaft with offset slot to 11 o'clock position.
Assemble the chain to the intake camshaft sprocket aligning the upper link to the INT diamond timing mark on the camshaft sprocket.

Important: When lowering the timing chain into the cylinder head, rotate the assembly 90 degrees to allow the chain to fall between the cylinder block bosses, then rotate the assembly back so that the camshaft sprocket is facing forward.

Lower the assembly through chain housing opening on top of the cylinder head. Use care to make sure that the chain goes around both sides of the cylinder block bosses.

Important: The crankshaft sprocket timing mark will be at approximately the 5 o'clock position.

Route the chain around the crankshaft sprocket and align the silver link to the timing mark.

Notice: The camshaft sprocket bolts are not reusable, it is a torque-to-yield (TTY) bolt, and must be discarded to prevent premature failure.

Install the intake camshaft sprocket with the chain in proper position to the camshaft. Rotate the intake camshaft using a 24 mm wrench on the flats on the camshaft until the camshaft aligns with the sprocket.
Install the new intake camshaft sprocket bolt and finger tighten.

Notice: Excess slack in the chain must be kept to the chain tensioner side (movable guide) of the cylinder block when installing the timing chain or the camshaft sprockets will not be correctly timed to the crankshaft sprocket.

Important: Make sure the crankshaft marks and the camshaft marks aligns with the colored links.

Install the adjustable timing chain guide through the opening at the top of the cylinder head and install the chain guide bolt.
Tighten
Tighten the timing chain guide (adjustable) bolt to 10 Nm (89 lb in).


Install the exhaust camshaft sprocket loosely on the exhaust camshaft with the timing mark on the sprocket aligned with the silver link.
Install new camshaft sprocket bolt loosely.


Align the camshaft sprocket with the chain in proper position to the camshaft. Rotate the exhaust clockwise using a 24 mm wrench on the flats on the camshaft until the camshaft aligns with the sprocket.


Verify that all the colored links are aligned with the appropriate intake (1), crankshaft sprocket (2), and (3) exhaust marks.
Verify the crankshaft sprocket timing mark is at 5 o'clock.
If marks are not correct, you must repeat the timing procedure.


Install the fixed timing chain guide and bolts.
Tighten
Tighten the timing chain fixed bolts to 15 Nm (133 lb in).


Apply the thread sealant to the thread. Refer to Sealers, Adhesives, and Lubricants for the correct part number. Install fixed guide bolt access hole plug.
Tighten
Tighten the timing chain bolt access hole plug to 40 Nm (30 lb ft).

Notice: Use a 24 mm wrench to support the camshaft while applying torque to camshaft sprocket bolt. Do not torque camshaft bolts against timing chain, as it may damage the timing chain.

Tighten intake and exhaust camshaft sprocket bolts while holding camshaft with 24 mm wrench.
Tighten
Tighten the camshaft sprocket bolts to 85 Nm (63 lb ft) plus 30 degrees

Important: A new tensioner should be supplied in the fully compressed non-active state. A tensioner in the compressed state will measure 72 mm (2.83 in) (1) from end to end. A tensioner in the active state will measure 85 mm (3.53 in) from end to end.

Inspect the timing chain tensioner. If the timing chain tensioner, O-ring seal, or washer is damaged, replace the timing chain tensioner.

Measure the timing chain tensioner assembly from end-to-end.
If the timing chain tensioner is not in the compressed state perform the following steps;
24.1. Remove the piston assembly from the body of the timing chain tensioner by pulling it out.

24.2. Install J45027-2 (2) into a vise.

24.3. Install the notch end of the piston assembly into the J45027-2 (2).

Using J45027-1 (1), turn the ratchet cylinder into the piston.

Inspect the bore of the tensioner body for dirt, debris and damage. If any damage appears, replace the tensioner. Clean dirt of debris out with a lint free cloth.
Install the compressed piston assembly back into the timing chain tensioner body until it stops at the bottom of the bore. Do not compress the piston assembly against the bottom of the bore. If the piston assembly is compressed against the bottom of the bore, it will activate the tensioner, which will then need to be reset again.
At this point, the tensioner should measure approximately 72 mm (2.83 in) (1) from end-to-end. If the tensioner does not read 72 mm (2.83 in) (1) from end to end repeat step 24

Ensure all dirt and debris is removed from the timing chain tensioner threaded hole in the cylinder head.
Install the new timing chain tensioner assembly bolt and tighten.
Tighten
Tighten the timing chain tensioner assembly bolt to 75 Nm (55 lb ft).

The timing chain tensioner is released by compressing it 2 mm (0.079 in) which will release the locking mechanism in the ratchet. To release the timing chain tensioner, use a suitable tool with a rubber tip on the end. Feed the tool down through the cam drive chest to rest on the cam chain. Then give a sharp jolt diagonally downwards to release the tensioner.

Install the upper timing chain guide and bolts.
Tighten
Tighten the timing chain guide (upper) bolts to 10 Nm (89 lb in).

Raise the vehicle if necessary.
Install the new front cover gasket.
Install the front cover assembly.
Install the front cover assembly bolts.
Tighten
Tighten the front cover-to-block bolts to 25 Nm (18 lb ft).

Install the front cover water pump bolt.
Tighten
Tighten the water pump bolts to 25 Nm (18 lb ft).

Lubricate the front seal and the sealing surface of the pulley with the clean motor oil.
Install the balancer pulley onto the crankshaft indexing keyway. Use care to properly align the flats on the balancer pulley with the flats on the oil pump drive in the front cover assembly.
Install the crankshaft damper pulley.

Install the new crankshaft balancer pulley bolt with the washer assembly.

Install the J 38122-A .
Tighten
Tighten the crankshaft pulley bolt to 100 Nm (74 lb ft) plus 75 degrees.

Install the accessory drive belt tensioner.
Tighten
Tighten the drive belt tensioner bolts to 45 Nm (33 lb ft).

Route belt around the alternator and the A/C compressor.
Install the J 39914 onto the tensioner and unload spring tension from the tensioner while positioning the belt.
Release the tensioner and remove the tool.

Install the right hand engine bracket and bolts.
Tighten
Tighten the engine mount bracket-to-engine bolts to 110 Nm (81 lb ft).

Install the right hand engine mount shims.
Install the right hand engine mount onto the body side rail studs.
Install the right hand engine mount-to-body nuts.
Tighten
Tighten the engine mount-to-body nuts to 110 Nm (81 lb ft).

Install the right-hand engine mount-to-engine mount bracket bolts.
Tighten
Tighten the engine mount-to-engine mount bracket bolts to 50 Nm (37 lb ft).

Remove the SA9105E .
Install the right engine inner splash shield.
Install the right wheel and hand-tighten the wheel nuts.
Tighten the wheel nuts.
Tighten
Tighten the wheel nuts to 125 Nm (92 lb ft).

Visually inspect the camshaft cover gasket for signs of leakage. The camshaft cover gasket is reusable if not damaged.
Assemble the camshaft cover and gasket using care to make sure that gasket is located in retaining groove on camshaft cover.
Install the cover on cylinder head and hand-tighten the bolts.
Tighten
Tighten the camshaft cover bolts to 10 Nm (89 lb in).

Reposition fuel line assembly.
Notice: An open-end wrench must be used to support the fuel line to rail connection during loosening/tightening to avoid damaging the fuel rail assembly.

Install the transfer line fitting at fuel to fuel rail.
Tighten
Tighten the transfer line fitting-to-fuel rail to 10 Nm (89 lb in).

Connect the fuel rail bracket and bolt to the cylinder head.
Tighten
Tighten the fuel line bracket bolt to 10 Nm (89 lb in).

Connect the ground strap to the camshaft cover assembly.
Tighten
Tighten the camshaft cover ground strap bolts to 10 Nm (89 lb in).

Connect the degas hose and attach to the fuel rail.
Connect the coolant pipe bracket bolts to the cylinder head.
Tighten
Tighten the coolant pipe bracket bolt to 10 Nm (89 lb in).

Install the spark plugs, if removed.
Tighten
Tighten the spark plugs to 20 Nm (15 lb ft).

Install the ignition module assembly to the cam cover and hand-tighten the retaining bolts.
Tighten
Tighten the ignition module-to-camshaft cover bolts to 8 Nm (71 lb in).

Install the air cleaner assembly and bolt.
Tighten
Tighten the air cleaner-to-support bracket bolt to 10 Nm (89 lb in).



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Old 06-04-2007, 08:15 PM   #10
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Default Re: Timing Chain

Install the outlet resonator/duct assembly into position.
Connect the PCV fresh air vent hose assembly.
Tighten the clamp at the throttle body assembly.
Position the outlet resonator/duct assembly up with support bracket and install push-pin.
Tighten the clamp at the air cleaner assembly.
Connect the intake air temperature (IAT) sensor connector.
Connect the negative battery cable.
Tighten
Tighten the battery terminal bolt to 17 Nm (13 lb ft).

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Old 06-04-2007, 09:50 PM   #11
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Default Re: Timing Chain

Im curious, what is the flat rate time for a timing chain replacement?

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Old 06-04-2007, 10:29 PM   #12
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Default Re: Timing Chain

SSICARMAN - Hey..Thanks so much for all your helpful posts.

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Old 06-06-2007, 09:42 PM   #13
1saxman
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2003 VUE 3.0L
Default Re: Timing Chain

The engine's making noise and the oil's gone, so you put a new cam chain in??? Wow.

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Old 06-06-2007, 10:32 PM   #14
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Default Re: Timing Chain

Quote:
Originally Posted by msgrape View Post
SSICARMAN - Hey..Thanks so much for all your helpful posts.
You are welcome.

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