Injection pump bracket fractured

[romie]

Pants.

Soooo, 1996 Xantia 1.9TD Estate with Bosch injector pump...

Having replaced the timing and axillary belts I noticed that the Bosch mechanical injection pump was starting to vibrate/shake/shudder badly, (shake back and forth, toward and away from the engine), at tick-over. Kind of like it's hit it's resonant frequency.

I thought I'd increase the tick-over slightly and that would sort that.

On the way back from work I noticed that the tick-over was noticeably slower than normal and it seemed to be getting slower and slower.

Taking a firm hold of the injection pump and shoving it back and forth toward the engine and peering down the back of the ip, I can see that the bracket holding the ip has fractured and so the pump is now getting looser and looser.

Of course I'm not using the car now and have screwed the 8mm bolts into the ip sprocket.

I'm going to find a replacement bracket on Monday.

My problem is I don't know if the vibrating was caused by a fractured bracket or the fracture was caused by the extreme vibrating and so it will just happen again.

Anyone else had a very badly shaking ip on tick-over?

Ugh, it never ends!

[citroenxm]

Ive NEVER known these brackets to fracture.. Thats a heafty piece of alloys its bolyed too... anyway, the bracket is IDENTICAL for Lucas or Bosch, its only the positioning of the 3 Studs - cam belt end that determin Bosch or Lucas.

If you need one, give me a shout.. Ive got a block there I can grab the bracket off, IIRC the pump is already removed.

[romie]

Hey, good evening to you citroenxm!!

I hope you had a good day

Mine was spent sorting the dreaded Xantia clutch clip problem, (again after only one year), only to find this ip bracket problem and so move onto getting my motorbike sorted for the daily work commute :/ Spose I was lucky to spot it before the ip sheared off and the pistons ended up nailing the valves through the cam cover!

Thanks, that's great to know about the identical brackets.

How much are you thinking of for the bracket?

I've got a breaker near where I work so I can check there on Monday.

The ip was shaking quite violently at low revs/ tick-over. I know something was going to give if it wasn't sorted out. Thought it was going to be one of the four injector pipes.

When the ip was shaking and I noticed the revs were below normal tick-over and also the revs started pulsing slightly faster then slower..

If I held the ip very firmly to stop the vibrating this pulsing would stop.

Wonder if it could be due to a faulty tensioner? They seemed fine when I changed the belt.

I was trying to find some more information regarding shaking injector pumps on here and there was a poor tick-over suggestion relating to a faulty injector.

How about if I got the timing slightly off when fitting the timing belt?

The car runs perfectly ok otherwise?

[romie]

Oh, where are you based? Anywhere near Oxford?

[citroenxm]

romie... the cam belt timing is spot on and has to be for it torun.. am xud does NOT want to know if the cam belt is a tooth out... as i said this is a very new one to me and im sure i lot others..

im in north wales.. anglesey... go check out the breaker if you like but my guess is the ip will still be in the way.... remember you can remove an xud ip pump without removing the cam belt by settin the toming to tdc and useing two 8mm bolts in the ip pump pully...

[romie]

Ah yes, I've bolted the ip sprocket with the two 8mm bolts but the sprocket is bolted to the bracket that I need to change!! :/

So going to have to re-time the timing belt when the bracket is changed

How much do you want for your bracket you have?

[citroenxm]

Romie,

you know, as ive never sold one before I havent the foggiest!

DOH, of course you'll have to remove the sprocket to remove the pump to remove the bracket.. stupid me.

Make me an offer! Postage next day 8 quid..

[romie]

haha, right-o. I'll check out the local breakers and see what they're asking first

Really need to figure out what is causing the excessive ip shaking tho :/ hmmm

Cheers for the input!!

[Lighty]

I have seen these brkts fail if the pump tail end fixing is not fitted , or left loose, the three front fixings are not enough on their own to hold the pump.

[Xaccers]

Put the timing bolts in the cam sprocket and the flywheel (behind the starter motor)
That way you can safely remove the cam belt without losing timing.
You'll need a puller to remove the pump pulley. The pulley has a woodruff key (don't lose it!) so you'll just have to rotate the pump until it's timing holes meet up, when you've got the new bracket fitted of course, then you can refit the belt.
It may explain why your cam belt was running over the edge of the pulley.

[RichardW]

A new one is £58.32 seemingly. Certainly never heard of it before.

[CitroJim]

Mark the pump position relative to the old cradle and transfer this mark to the new cradle. Pump timing will then be almost (if not absolutely) spot-on.

You'll need a puller to remove the pump pulley.

Here's a homebrew one. Bolts are M7 and can be 'borrowed' from the gearbox...



Here, the puller as made:



And in use. Engine, car and cradle removed for clarity...

[romie]

I have seen these brkts fail if the pump tail end fixing is not fitted , or left loose, the three front fixings are not enough on their own to hold the pump.

I have had that pump off a few times a year or so ago. Never taken the bracket off. But I'm sure I would have replaced all the fixing bolts. I'll double check tho as this is the only suspect as yet :/

Cheers

[romie]

I've YET to find that damn hole behind the starter motor, but this time I do neeeed to locate it.

Hey, nice pictures!!

hmmm, puller eh?....

Erm, over a year or so ago I removed the pump from the sprocket by, er, taping a screwdriver down each side of the sprocket. It worked very well I'll add. Didn't seem to put any unwanted pressure anywhere and the pumps been perfectly fine since then. I'm I a bad person? :p

[citroenxm]

not really.. ive done that a fair few tikes with no ill affect...

once you find the timing hole you never forget..