balance shaft timing and noise?

Hello,

Thanks for the video and diagrams to help us see what you are talking about. The balance shaft with the two gears looks like it is causing the issue it should not move that much. I would replace the unit and reassembly.

Please let us know what happens.

Cheers, Ken

Thank you so much. Ken
Every thing okay .not noise .(Clark clark clark)
It is sound of impact the two gear can move.and have vibration because timing not Constant it relative motion with driven gear some degree of rotating.
When the engine so hot the two gear a hard moving (expanded material) causing reduce of the noise or not sound .
If incorrect tell me please.
Thank you very much. Roj

If not repleace it is crack the next time and block suction pipe of oil pump. I search car garage acv40 has ploblem the balance shaft about 150000 + km.

When you have the engine apart grab each one of the rods and try to move them on the crank you may have a spun rod bearing as well. Can you take a video of the noise so I can hear it? Upload it here in your response. Also, look at the timing chain guides a loose chain can cause this as well.

Before:
In the moring have the noise and louder when shift the gear handle to "D" o, "R" or A/C on.
After:
"D" and A/C on
Fixed two gear balance shaft. (I see a closed area safe for testing. I do not want to say that ..super glue.)

Before:
In the morning.

Man, that is not messaging around. Please remove the serpentine belt and recheck. If the same that noise sounds more like a chaining chain issue. Also, does the noise change or go away when you put the car in gear or reverse? You replaced the balance shaft unit correct?

Sorry I am not upload video after replace balance shaft.
Okay I can.

Yep, that sounds like you have a timing chain that is stretched and tension-er that is not working or the guide that is broken. I assume it makes the same noise with the serpentine belt off. Here are diagrams to show you what you are in for when doing the job.

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken

Thank you so much ken.that all very nice for me.
The last week i see tensioner chain of oil pump is not center. I don'n know it correct position or not .

I agree with you. I just heard new noise.at 1,000 rpm to 1,250 rpm peak noise. l have video to see tension-er chain. The next time I just remove cover valve to see timing chain.
Thank you.

The guide that is off is where I would look first it is supposed to be perfectly aligned. I would take off the timing cover so we can look to see what is going on. We are getting closer. :)

Today I check valve clearance it okay.
And check timing chain not okay.
Check tensioner chain i may be found cause of issue .
1. Tension-er not work it too loose and leak oil.
2. Is the tensioner too loose?
One time I heard chain is stumber (...Gakk....) when cam gear rotating . I am ever hear few time in idle speed. Now I know that right.
First I just replace tension-er chain.
If Ihave a time just replace timing chain the car garage.

It sounds like you found the problem get the guides, chain and tension-er. Also, you you made sure the oil pump pick up is clear?

Vdo.
Now I order tension-er chain it coming soon. First test.
Oil pump I do suction pipe.
Thank you so much, Ken.

Yes, everything in those videos looks worn and needs to be replaced. Make sure the oil pick up is clear, I would take it off and clean it thoroughly.

just rebuilt engine cannot find timming details for installing the contra rotating balance shafts.Is a 2.4l ,balance shaft assembly bolts up under crank shaft and is driven by a gear attached to the crank.

i think what i'e sent is what you need it's all we have. we do have another with a paint mark but not sure that is it.

The picture on the left is of the timing chain and cam gears; i have info. on them.The picture in the middle appears to be a similar set up to the one on my car .The picture on the right is not the same set up, maybe from an earlier year.Still no help though.I need detailed info. [ is the crank set at TDC for instance].The balance shaft gears have 2 marks on each gear and they are not identical and i need to know were they need to be positioned in relation to each gear and the crank shaft position.I have a HAYNES repair manual 2002-2006.It doesn't even mention a balance shaft.The 2007-2011 shows detail of a balance shaft , but it is different.The manual for the years before 2002 also mention a balance shaft but it is chain driven.I have checked a chilton's manual with similar results.I have searched the web to no avail so far.Any help i appreciate.

Thanks

the last pic is a balance shaft and the dots need to line up the center pic is the balance shaft gears installed if you look closely there are a cople more dots that look like they line up with something on the drawing. unfortunately this is all we have oin our manuals so i'm sending what we had.
hereare instructions maybe this will help.
Installation

1. Rotate the driven gear No. 1 of balanceshaft No. 1 for the rotating direction until it hits the stopper.
2. Confirm that the matchmarks on driven gear No. 1 and No. 2 are matched.

Fig. 32: Matching Matchmarks
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3. Align the timing marks of the No. 1 and No. 2 balanceshafts as shown.
4. Place the No. 1 and No. 2 balanceshafts on the crank case.
5. Apply a light coat of engine oil under the heads of the balanceshaft housing bolts.

Fig. 33: Aligning Timing Marks
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6. Uniformly tighten the 8 bolts in the sequence shown.

Torque: 22 N.m (220 kgf.cm, 16 ft.lbf)

HINT:

The balanceshaft housing bolts are tightened in 2 progressive steps.

Fig. 34: Tightening Balanceshaft Housing Bolts In Sequence
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

7. Mark the front side of each balanceshaft housing bolt head with paint.
8. Retighten the bolts by 90° as shown.
9. Check that the painted marks are now at a 90° angle to the front.

Fig. 35: From Front Position Turn Paint Marked Bolt 90°
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

with the motor at top dead center the balance shaft assembly should line up like this, doing the same job right now

Please I need to know where I can get a cheap block or even just the balance shaft, one of the wood looking gears of the balance shaft on my 2003 Camry scattered into pieces, found most of it in oil pan when I dropped it and the remainder was sitting there in the balance shaft when I eventually brought it down.. the crankshaft looks healthy, so I'm thinking just changing the balance shaft and rebuilding the timing kit will suffice.. please advice and most importantly, I need to know where to buy the block or balance shaft. Thanks

You will need to get a used engine to get these parts because most people that have them belong to the engine in one piece so that the way they want to sell it. You can call wrecking yards to confirm.

Driving the camry, started to hear a clicking noise, sounded internal engine but was not sure. this went on for about two weeks, as this is my daughters car. Then driving the car on interstate, noise got louder, cruise control caused trans to up shift, higher rpms, then boom. Got it towed, only tried to start once before tow truck arrived, noticed no oil pressure. Finally got around to removing the oil pan, found balance shaft gears broken and bearing spun, damaging the upper oil pan. So, now i have a used upper oil pan assembly with the balance shafts, from a salvage yard. I have heard of some type of timing that needs to be done and other things, i was looking for procedures, and difficulty. I am a mechanic, but with diesel engines, never seen balance shafts before. Should this be a job I should tackle, or get professional help. I can follow instructions, just not real confident on this job. I removed the bad balance shafts but not the upper oil pan, and i know the upper oil pan will have to be replaced because the balance shaft bearings caused damage to casting. thanks for your help. Martin

The balance shafts are not to bad once you have the instructions which I have found for you int he diagram below. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

but there is nothing wrong with the top end, crank looks good, just the balance shafts failed, why can't I just replaced the upper oil pan and the balance shafts?

if u feel no metal has got in the motor u can replace the shafts.

i have looked on youtube and searched the web for info on this engine, there are some that look like its the right one, but not really sure, any links, this is a 2az fe motor, 2.4 liter. Also, is this a repair that I probably can handle, like i said, i am a mechanic but on diesel, never seen so many timing marks much less a balance shaft assembly, ever done this kinda job before? I just don't want to do something wrong to cause the engine damage and ruin the car. Sorry for being a little OCD, just want to be careful before i begin to pull things off.

Thanks for the advice.

There is no procedure listed for replacement of the upper oil pan.
I had to replace upper oil pan on this 2.4L.
The customer had bottomed out on the street and the aluminum oil pan broke at the
area where the engine mount attaches to the oil pan.
Front of engine by the right axle.
To replace just the upper oil pan.
1) Remove Valve cover.
2) Remove Lower oil pan.
3) Remove Timing Cover.
4) Remove Oil Pump gear and chain, then oil pump.
5) Remove upper oil pan , 11 Bolts, one bolt is hidden in oil filter housing. See attached picture.
If you plan on replacing the rear main seal , you will need to remove engine from car.
Notes: There is an updated Balance shaft assembly.
The Balance shafts are driven by a gear on the crankshaft.
The drive gear on the crankshaft has 50 teeth and the balance shafts have 25 teeth.
The Toyota dealership near us, estimates this repair at 22 hours including rear main seal.
To set up the balance shafts engine at T.D.C. #1 Compression. See Fig #169.and attached pictures

perfect, thank you very much exactly what is was looking for. and thank you for the quick response.

Good to hear, please use 2CarPros anytime we are here to help.