julianf
Member
- Messages
- 9,035
- Location
- devon, uk
I've got some confusion here.
Ive just got a Bosch VE pump back from rebuild.
The rebuilder (who isn't available by phone until Monday) has put a note (with an exclamation mark) that the pump is pinned in the timing position.
There's also a horseshoe shaped bit of metal tied to the pump.
I've swapped these pumps, replaced belts, replaced snapped belts, etc etc before and the way you time the engines is by pinning the flywheel, setting the cam position and pinning the injection pump.
I don't really understand why I need the pump locked.
The chap on the sales counter seemed to think I should have pinned it before removal. I did not. I locked the pump sprocket and pinned the flywheel, like I usually do.
I'm just confused. I assume that if I unpin the pump on the bench, it will jump back to about 3 mins to 12, like they always do, I can refit it, tweak it back to 12:00 with a socket, pin it using my normal, slide in pin, lock the pump sprocket, and I'm good to go?
The pump is spot on 12 at the moment. When theyre at rest normally, you cant get the pin in that hole, as the groove springs back a few degrees. You need a bit of tension on it to get the pin in.
Basically I don't want to stuff things up, but this bench pinning is, basically, the same as my timing kit pinning, right?
I guess I could just refit it and then unpin it, to achieve the same results, but access to the area is not so easy. Im thinking the methods are just different path ways to the same end result, right?
Its odd - ive had these pumps for 20 years or so, taken them on and off, etc.etc. and just never come across this one!
Thank you.
Ive just got a Bosch VE pump back from rebuild.
The rebuilder (who isn't available by phone until Monday) has put a note (with an exclamation mark) that the pump is pinned in the timing position.
There's also a horseshoe shaped bit of metal tied to the pump.
I've swapped these pumps, replaced belts, replaced snapped belts, etc etc before and the way you time the engines is by pinning the flywheel, setting the cam position and pinning the injection pump.
I don't really understand why I need the pump locked.
The chap on the sales counter seemed to think I should have pinned it before removal. I did not. I locked the pump sprocket and pinned the flywheel, like I usually do.
I'm just confused. I assume that if I unpin the pump on the bench, it will jump back to about 3 mins to 12, like they always do, I can refit it, tweak it back to 12:00 with a socket, pin it using my normal, slide in pin, lock the pump sprocket, and I'm good to go?
The pump is spot on 12 at the moment. When theyre at rest normally, you cant get the pin in that hole, as the groove springs back a few degrees. You need a bit of tension on it to get the pin in.
Basically I don't want to stuff things up, but this bench pinning is, basically, the same as my timing kit pinning, right?
I guess I could just refit it and then unpin it, to achieve the same results, but access to the area is not so easy. Im thinking the methods are just different path ways to the same end result, right?
Its odd - ive had these pumps for 20 years or so, taken them on and off, etc.etc. and just never come across this one!
Thank you.
