P38 Diesel Injector Pump & Cam Top Dead Centre?

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UnitLandy

UnitLandy

Well-Known Member
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Whittonstall
Apologies if this is well discussed. I looked but couldn't find a thread. I've got the front cam lobe pointing to the injector side with the edge parallel to the guide visible in the oil filler hole & the locating flywheelpin is in & located (well the crank pulley wouldn't move after so im assuming its in properly). However, the woodruff key on the injector pump doesn't appear to be TDC. Is it supposed to be?
Screenshot_20250617_193351_Video Player.jpg20250617_165833.jpg
 
UnitLandy said:
Apologies if this is well discussed. I looked but couldn't find a thread. I've got the front cam lobe pointing to the injector side with the edge parallel to the guide visible in the oil filler hole & the locating flywheelpin is in & located (well the crank pulley wouldn't move after so im assuming its in properly). However, the woodruff key on the injector pump doesn't appear to be TDC. Is it supposed to be?
View attachment 343417View attachment 343419
Click to expand...
There are 2 holes in the flywheel. Check RAVE for the full info on fitting the FIP.
 
The pumps leaking so it's a removal for new seals. As long as its locked off and I don't turn the pump shaft/woodruff key, does it matter what position it's in? As long as nothings changed while it's out it shouldn't affect the timing when I put it back in. Don't worry, I know to mark the pump bottom & middle section plus keep the removal tool in place to keep the sprocket falling into the timing case.
 
Are you doing the top cap seals, upper and lower caps?
They can be done with the pump on the engine if you haven't gone to far dismantling the pump.
The injector head can also be done in situ.
These three are the most popular seal fail issues 🤔but the other seals can fail. 😬
 
UnitLandy said:
The pumps leaking so it's a removal for new seals. As long as its locked off and I don't turn the pump shaft/woodruff key, does it matter what position it's in? As long as nothings changed while it's out it shouldn't affect the timing when I put it back in. Don't worry, I know to mark the pump bottom & middle section plus keep the removal tool in place to keep the sprocket falling into the timing case.
Click to expand...

As long as the tool stays in place you can take the pump in and out with no issues. You'll have to time it up afterwards anyway.
 
I was going to do them all and just get it over with. I guarantee If I did the quick job it would come back to bit my backside anyway.

Grrrrrr said:
As long as the tool stays in place you can take the pump in and out with no issues. You'll have to time it up afterwards anyway.
Click to expand...
Oh, right. If you Mark everything off and nothing moves why do they need to be re-timed?
 
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