Civic 2000 - Alternator & AC belts snapped while driving

hasankhurshid29 (Hasan Khurshid) 2020-11-16 00:03:16 +0500 #1

Assalam o Alaikum

Few minutes ago, I was near my home with family. Suddenly some news came and battery light come on. So I parked the on the side. My father came and we towed the car to the mechanic who works at night till 3 AM near our home.
His man checks the car. He told me that its a common problem in these D series engines that the pulley usually got slipped thats why the AC and Alternator belts snapped. He told me that he will get kabli pulley from shershah which will cost around 2500. And then some nut for locking the pulley which will cost 1500. And then belts cost and labour. So almost 6k, 7k.
Now my question is does he is telling correct that this engine's pulley slipping is common?
Also if both belts snapped, does it indicates pulley slipping?
Power Steering belt was intact.

Thanks
@shabbir.1
@rajaahmed96
@dayrider
@Hassan1991
@dani_kk
@babarhyd
@nfssaad
@Xulfiqar

hasankhurshid29 (Hasan Khurshid) 2020-11-16 00:08:41 +0500 #2

For Refernece:

Hassan1991 (Electrical Engineer ) 2020-11-16 01:07:23 +0500 #3

Never heard about it.
pulley doesn't slip that easy though.
Wrong alignment always cause belts to snap.

hasankhurshid29 (Hasan Khurshid) 2020-11-16 01:18:59 +0500 #4

That's what making me confused? As i searched and couldn't any one case where pulley slipping causes this.
And why he wants to replace whole crankshaft pulley without even properly looking at it?

Xulfiqar (Xulfiqar) 2020-11-16 02:09:13 +0500 #5

The pulley which is also known has harmonic damper is a rubber sandwich and is a common wear part.

I would suggest to buy a brand new part if you can afford it, and use a new bolt to tighten it, it requires a counter holder tool which is nut shaped. Very easy to make.

Replace all belts also.

hasankhurshid29 (Hasan Khurshid) 2020-11-16 06:57:37 +0500 #6

Do you think this can be the only cause of belts snapping?

Xulfiqar (Xulfiqar) 2020-11-16 07:52:46 +0500 #7

Yes, the belts would slip off and break with a bad/worn crank pulley

nfssaad (Saad Ahmed Khan) 2020-11-16 08:48:38 +0500 #8

happened to my car once. but it was because the main pulley came off due to reusing the crank pulley bolt. it damaged the woodruff key and shaft keyway as well.

a little precision welding and grinding managed to save the main crank shaft.

when you get the pulley, make sure to count the groves in the pulley and match it to the grooves in the AC pulley and power steering pulley.

get a BRAND NEW crank pulley bolt. its available with Nasir motors. it MUST be torqued down to spec. better add some blue thread locker to it as well. can never be too carefull.

regarding the nut, some mechanics already have this tool made. but for sure it wont cost 1500rs. its just a scrap nut and a rod welded to it.

i also have a spare pulley available with me. check and tell me how many grooves your power steering pulley has. or attach a picture of the power steering pulley

hasankhurshid29 (Hasan Khurshid) 2020-11-16 18:26:50 +0500 #9

Power Steering Pulley: @nfssaad

hasankhurshid29 (Hasan Khurshid) 2020-11-16 18:27:33 +0500 #10

Mechanic was saying it will cost more than 10k , only bolt. Which is too much expensive

hasankhurshid29 (Hasan Khurshid) 2020-11-16 18:33:10 +0500 #11

So the problem is much greater than expected. The crank shaft end's lock on which the pulley sits is also deformed as you can see in the pic. The mechanic (A) was saying that the problem will reoccur after 6 months. And the permanent solution is to swap another engine. So I took pics and went to my old mechanic (B). He said that it can be solved by filling some material and welding it and the machine shop will do this job after taking off the engine and this is a permanent solution. So I towed my car to him.
Now I also want him to check the things which can be easily checked while engine is off like water pump. My engine is swapped in 2015 and till now it has only run around 25k. So should timing belt also be checked?

Also what causes this deformation? Mechanic (A) said that its because the bolt may not be fully tightened when the engine was swapped.

hasankhurshid29 (Hasan Khurshid) 2020-11-16 18:34:56 +0500 #12

@xulfiqar @hassan1991

Xulfiqar (Xulfiqar) 2020-11-16 19:27:03 +0500 #14

These silly events are also why I never advise to swap an engine from scrap and start driving.

Btw

After the repair job, you still need a new crank pulley bolt. Dont cheap out on that. Its mandatory to be changed.

hasankhurshid29 (Hasan Khurshid) 2020-11-16 20:15:41 +0500 #15

How much it cost you?

Hassan1991 (Electrical Engineer ) 2020-11-16 20:38:21 +0500 #16

That's bad.
Yes looks like bolt go loose.
Must change the timing belt and also change leak seals.
New bolt is necessary now with liquid thread lock glue.

hasankhurshid29 (Hasan Khurshid) 2020-11-16 20:48:17 +0500 #17

I will ask my mechanic if he changed the timing belt when swapping the engine in 2015 because he is the same mechanic who swapped the enigne. Because 25k and 5 years on a timing belt and crank seal is very low I think. Also i will make sure that he gets a new bolt.

Xulfiqar (Xulfiqar) 2020-11-16 21:18:33 +0500 #18

most mechanics now are repairing just to get the car out of their shop. They are not in business for long life of vehicle.

hasankhurshid29 (Hasan Khurshid) 2020-11-17 01:03:47 +0500 #19

What do you think by looking at the pic, can I use this pulley again with new bolt and new key?

Xulfiqar (Xulfiqar) 2020-11-17 01:13:57 +0500 #20

Pulley looks good, are there any cracks anywhere?

hasankhurshid29 (Hasan Khurshid) 2020-11-17 01:22:16 +0500 #21

I don't see any but I will again check in the morning.
One more thing if this pulley is from the stock engine PKDM 1.6L D16Y8 (PK6V) and this swapped engine is from EUDM and 1.5L D15Z6 VTEC-E, is there a possible mismatch because I read somewhere 1.5l has different pulley than 1.6l?

Becasue maybe when engine is swapped, the mechanic used the old pulley from the stock engine.