Member Since: 25 Jan 2022
Location: Leicestershire
Posts: 19
Haven't quite got the timing cover off yet, but after removing the aux belt idler it's obvious the timing belt is not right. And by not right I mean it's split. Considering it was replaced in June last year I think something else has failed and destroyed the belt.
Can't tell anymore yet and for today I've run out of time. Tune in tomorrow when hopefully the timing cover is off.
29th May 2024 6:22 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5042
It's as I feared so after your post at the beginning of this thread as cam sensor's very rarely fail.
In most belt failure cases the situation can be rectified, but it might be costly depending on the amount of damage. If you can take some pics and post them when you have the cover off would be helpful in responding.
Let's hope it's not terminal. yµ (idµ - eAµ) ψ=mψ
29th May 2024 7:02 pm
AnotherWill
Member Since: 25 Jan 2022
Location: Leicestershire
Posts: 19
As soon as the aux belt idler was off it was apparent that it was the timing belt that had gone, I could feel that it was slack and it wasn't right.
After timing cover came off:
Click image to enlarge
Belt out:
Click image to enlarge
Last year, during an overhaul I had the timing belt, front chain, aux belt, idlers and fuel belt replaced. It's hard to say but they don't look as new as I would expect for less than 10k miles.
Next job is to check the oil pump isn't one of the problems models.
5th Jun 2024 6:53 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5042
As you say it doesn't look new but if it was a recent fit the date printed on it should still be legible. The date is also stamped into the tensioner which will be legible.yµ (idµ - eAµ) ψ=mψ
5th Jun 2024 12:40 pm
AnotherWill
Member Since: 25 Jan 2022
Location: Leicestershire
Posts: 19
Assuming this information is correct for DAYCO belts:
Quote:
The production data code 08214196 means: 08 (year 2008), 21 is the 21st
week of that year and 4 is the 4th day of that week. The 196 number
represents the belt position inside the production mold.
Then my timing belt: 22073076 = 2022 Feb 17th.
And aux belt: 21433171 (I think) = 2021 October 27th
Neither belt is that old.
7th Jun 2024 11:03 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5042
That belt shouldn't have failed as it was only on the shelf for around a year before it was fitted.
You could try contacting Glen Goldstone at Dayco and see what his tech dept has to say, but you will have to send him the parts. Glen.Goldstone@dayco.com
What is the condition and date of the tensioner?yµ (idµ - eAµ) ψ=mψ
7th Jun 2024 12:34 pm
AnotherWill
Member Since: 25 Jan 2022
Location: Leicestershire
Posts: 19
Tensioner looks in good nick and has a 2022 date.
Click image to enlarge
At this point, is it worth retiming the engine, sticking a new belt on and see what happens? Or should I be considering a serious overhaul?
9th Jun 2024 5:50 pm
1784
Member Since: 04 Sep 2009
Location: Almunge
Posts: 170
I think you need to establish why the belt failed, it's quite unlikely that it was a belt manufacturing fault, rather something else has gone wrong and the belt shredded as a result of that.
You mentioned that you could turn the crank a full revolution, that is not a good sign if the cambelt is not in place, normally pistons would hit the valves and block rotation quite soon if not all shafts are moving in sync.Defender 110 SE 2021, Tasman Blue
Discovery 1 V8 ES 1997, Epsom green
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9th Jun 2024 8:22 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5042
AnotherWill wrote:
At this point, is it worth retiming the engine, sticking a new belt on and see what happens? Or should I be considering a serious overhaul?
Once the TB breaks the pistons will have no longer been "timed" with the cam movements, so it's a given that some damage will have occurred. Generally the piston hits an open valve and this forces the valve back against the cam breaking the bearing caps at the very least. So, it's a question of how much damage has been done!
Pull the injectors and the cam covers and see what cam/rocker damage is visible, then weigh up the costs. yµ (idµ - eAµ) ψ=mψ
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