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[Q] Balance shaft timing marks (alignment)

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  #1 (permalink)  
Old 27 Oct 2012, 09:03 pm
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Join Date: Oct 2012
Posts: 2
Default [Q] Balance shaft timing marks (alignment)

Hi everyone
First its really a great forum.
Right now I`m in the process of putting a engine together (I had to replace the engine block). I have a question about balance shaft. Is there a procedure how you can set the timing between crankshaft and balance shaft. Or there are marks on it. How you can do this.
The car it is 03 PT 2.4 non-turbo.
Thank you
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Old 27 Oct 2012, 09:58 pm
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Join Date: Sep 2012
Location: Carson City NV
Posts: 675
Default Re: [Q] Balance shaft timing marks (alignment)

Hmm there should be marks on them? But I don't know, lots of info on the Timing belts. But nobody ask about the balance shaft belts?

I did not notice it till I saw your post but on the 944's the balance shafts belts are part of the Timing belt job?

So yeah I'm waiting for an answer also!

Hmm first are you gonna disappear once your question gets answered?

Seems to happen alot on here? Kinda werid! Well welcome aboard in any case!

Last edited by Chip18sw; 27 Oct 2012 at 10:02 pm.
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Old 27 Oct 2012, 10:25 pm
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Join Date: Sep 2012
Location: Carson City NV
Posts: 675
Default Re: [Q] Balance shaft timing marks (alignment)

Mystery solved! It appears it's a chain in the oil pan? That would explain why no mention/pictures in the Timing belt procedure...who knew!

I did just glance at the first couple of post sooo....

Balance Shaft - Routine Maintenance
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Old 29 Oct 2012, 09:56 am
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Join Date: Oct 2012
Posts: 2
Default Re: [Q] Balance shaft timing marks (alignment)

Thanks for replay but what i need is what is a timing procedure for balance shaft. Anyway I solved my problem with this
balance shaft installation procedure
1. Balance shaft and carrier assembly installation is the reverse of the removal procedure. During installation crankshaft-to-balance shaft timing must be established. Refer to Timing procedure in this section.
2. With balance shafts installed in carrier position carrier on crankcase and install four attaching bolts and tighten to 40 ft. lbs. (54 Nm).
3. Turn balance shafts until both shaft key ways are up, parallel to vertical centerline of engine. Install short hub drive gear on sprocket driven shaft and long hub gear on gear driven shaft. After installation gear and balance shaft keyways must be up with gear timing marks meshed as shown in.
4. Install gear cover and tighten double ended stud/washer fastener to 105 inch lbs. (12 Nm). Align flat on balance shaft drive sprocket to the flat on crankshaft.
5. Install balance shaft drive sprocket on crankshaft using Special Tool 6052.
6. Turn crankshaft until number 1 cylinder is at top dead center (TDC). The timing marks on the chain sprocket should line up with the parting line on the left side of number one main bearing cap.
7. Place chain over crankshaft sprocket so that the plated link of the chain is over the number 1 cylinder timing mark on the balance shaft crankshaft sprocket.
8. Place balance shaft sprocket into the timing chain and align the timing mark on the sprocket (dot) with the (lower) plated link on the chain.

The lower plated link is 8 links from the upper link.

9. With balance shaft keyways pointing up (12 o'clock) slide the balance shaft sprocket onto the nose of the balance shaft. The balance shaft may have to be pushed in slightly to allow for clearance.

The timing mark on the sprocket, the (lower) nickel plated link, and the arrow on the side of the gear cover should line up when the balance shafts are timed correctly.

10. If the sprockets are timed correctly, install the balance shaft bolts and tighten to 250 inch lbs. (28 Nm). A wood block placed between crankcase and crankshaft counterbalance will prevent crankshaft and gear rotation.

Chain Tensioning:
- Install chain tensioner loosely assembled with new adjuster screw and shouldered pivot screw.
- Position guide on double ended stud making sure tab on the guide fits into slot on the gear cover. Install and tighten nut/washer assembly to 105 inch lbs. (12 Nm).
- Place a shim 0.039 inches (1mm) thick x 2.75 inch (70mm) long between tensioner and chain. Push tensioner and shim up against the chain. Apply firm pressure 5.5-6.6 lbs. (2.5-3 Kg) directly behind the adjustment slot to take up all slack. Chain must have shoe radius contact as shown in.
- With the load applied, tighten top tensioner adjuster bolt first, then bottom shouldered pivot bolt. Tighten bolts to 105 inch lbs. (12 Nm). Remove shim.
- Install carrier covers and tighten screws to 105 inch lbs. (12 Nm).

11. If removed, install oil pump.
- Install pick-up tube and oil pan.
- Fill engine crankcase with proper oil to correct level.
Chip18sw likes this.
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Old 29 Oct 2012, 10:11 am
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Join Date: Sep 2012
Location: Carson City NV
Posts: 675
Default Re: [Q] Balance shaft timing marks (alignment)

Oh I see now! "Putting an engine together!" Yeah I tend "speed" read through stuff!

Oh well thanks for posting the details!
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