kgh
New Member
I have to replace two injector sleeves on my AD41's. I've been advised that this requires a special tool to carry this out. Can anyone confirm this is the case or not. Thanks
kgh
kgh
injector sleeves, replacing
- Thread starter kgh
- Start date
tinkicker0
Well-Known Member
Never worked on those motors, but most engines I ever worked on required the sleeve to be knurled top and bottom with a special knurling tool.
volvopaul
Well-Known Member
There are 3 volvo tools req to do the job safely, as a slip up may require the cylinder head removing, its not a job for the DIY mechanic without the tools, knowledge, and the workshop manual.
As a rule all 6 need to be replaced at the same time, tools are available for hire to the trade only as far as I know.
Reason its a specialist job is due to the sleeve is surrounded by coolant which cools the sleeve, if not fitted correctly coolant can seep into the cylinder bores which can cause a hydraulic lock, wrecking the engine.
As a rule all 6 need to be replaced at the same time, tools are available for hire to the trade only as far as I know.
Reason its a specialist job is due to the sleeve is surrounded by coolant which cools the sleeve, if not fitted correctly coolant can seep into the cylinder bores which can cause a hydraulic lock, wrecking the engine.
kgh
New Member
injector sleeves
Well I'm in the trade, Permateek South Coast, and usually do all my own work but this does sound like I might bow out and get a VP chap to do it ths time, thanks for the advice.
Well I'm in the trade, Permateek South Coast, and usually do all my own work but this does sound like I might bow out and get a VP chap to do it ths time, thanks for the advice.
Nigelhg
Well-Known Member
I've replaced a few myself o my own ad41's. The tools required are the injector removal tool which stops the injector bringing the sleeve out with it, the sleeve removal tool that works like an expanding bolt to grip the old sleeve to remove it and a dummy injector (or you can just just a scrap injector) to use as a former to tap the replacement sleeve back into place.
FWIW you can buy the replacement swedish made sleeves a lot cheaper from trickkett marine. The sleeves come complete with the o ring that seals at the bottom and rubber seal the seals up the side of the sleeve.
I didn't find this job difficult -but if you're concerned maybe as VP say's get professional help.
Just remember to drain all the coolant from the engines first!
FWIW you can buy the replacement swedish made sleeves a lot cheaper from trickkett marine. The sleeves come complete with the o ring that seals at the bottom and rubber seal the seals up the side of the sleeve.
I didn't find this job difficult -but if you're concerned maybe as VP say's get professional help.
Just remember to drain all the coolant from the engines first!
madabouttheboat
Well-Known Member
Can I ask why you have to change them and what symptoms did you get that indicated they need changing?
Cheers
Bilgediver
Well-Known Member
also need to pressure test afterwards....???kgh
New Member
My exhaust manifold failed and I lost all coolant in the head. Got a company to do a compression check and look at the head to check pressure afterward but they managed to pull out two sleeves and in their words 'didn't know how to fix them' so left!? Not impressed. So I have to get them done now. So no symtoms as such just shoddey workmanship.
xr3i
Well-Known Member
Im a vehicle technician, like yourself was unsure at first but have replaced two of these myself on my tamd41a's, they are really easy to do with the correct tools.
See if you can borrow them from local Volvo dealer as you will not replace them without. There is no reason to pressure test afterwards, just drain coolant first, after replacing crank engine over with all injectors out to blow out any coolant, apply oil into bores and repeat, then reassemble.
See if you can borrow them from local Volvo dealer as you will not replace them without. There is no reason to pressure test afterwards, just drain coolant first, after replacing crank engine over with all injectors out to blow out any coolant, apply oil into bores and repeat, then reassemble.
volvopaul
Well-Known Member
Its always best for the time it takes to pressure test the cooling system after fitting new sleeves as a misplaced o ring will leak coolant straight into the bores.
As a mechanic you will know the results of that misfortune.
Also if new sleeves have been fitted and you crank the engine over on the key id stand well back as the injectors hold the sleeve in the head, as the sleeves will be loose as they are new, the air pressure will push them straight out of the head rendering your hard work a waste of time.