Jammed oil pump
-
- Member
- Posts: 208
- Joined: Wed Aug 19, 2020 11:22 am
- Location: Dorset UK
Re: Jammed oil pump
Well after a trial by drilling a 5mm hole in the front of the engine and using a drift, the oil pump did not want to move more than about 3/4 inch, so enlarged the hole 8mm and used a bigger drift, pump came out eventually as you can see, the crank worm has a small amount of damage so maybe have to replace the shaft as well, not sure how much damage to that it can tolerate, I will post a picture later of the crank shaft.
Looks like I will ned a new set of crank cases if anyone has any for sale for a 61/G5 MaxYou do not have the required permissions to view the files attached to this post.
- clanger9
- Posts: 1163
- Joined: Sat Jun 20, 2015 9:38 am
- Location: Chester, UK
Re: Jammed oil pump
Ugh, what a mess!
If you're doing a rebuild, it's worth replacing the timing side shaft as a matter of course; even if the oil pump drive has survived, there is likely to be a wear ridge where it runs in the timing side bush.
To prevent this happening again, you'll want the timing side bush clearance to be right (otherwise the crankshaft will hop about, resulting in the damage you've seen).
If you're doing a rebuild, it's worth replacing the timing side shaft as a matter of course; even if the oil pump drive has survived, there is likely to be a wear ridge where it runs in the timing side bush.
To prevent this happening again, you'll want the timing side bush clearance to be right (otherwise the crankshaft will hop about, resulting in the damage you've seen).
1989 Moto Morini Dart 350
1993 Ducati 750SS
1993 Ducati 750SS
-
- Member
- Posts: 208
- Joined: Wed Aug 19, 2020 11:22 am
- Location: Dorset UK
Re: Jammed oil pump
The shaft is badly worn so yes, does anyone have a preferred crank rebuilder?
Max
sorry, I don't know how to make the image smaller...Max
You do not have the required permissions to view the files attached to this post.
-
- Member
- Posts: 8740
- Joined: Wed Sep 01, 2004 1:00 am
- Location: WEST SUSSEX UK
Re: Jammed oil pump
Apologies for quoting my own post but.........Mighty Max wrote: Looks like I will ned a new set of crank cases if anyone has any for sale for a 61/G5 Max
Have you? It would be helpful to know for future enquirers.SPRIDDLER wrote: I see that Steve Surbey lists s/hand 'Lightweight crankcases' on his website so it may be worth Max giving him a call.
http://www.amcclassicspares.com/Secondhand%20Spares.pdf
'There is a tide in the affairs of men
Which taken at the flood............'
Which taken at the flood............'
-
- Member
- Posts: 208
- Joined: Wed Aug 19, 2020 11:22 am
- Location: Dorset UK
Re: Jammed oil pump
Hi Yes I phoned him today, he is taking a look this weekend, Max
-
- Member
- Posts: 448
- Joined: Tue May 07, 2013 11:35 pm
- Location: LINCOLNSHIRE UK
Re: Jammed oil pump
Ok so we have three sets of S/H G2 crank cases at Kettering. I am sure there is a 1961 set.
Give me a call on Monday when I am back at work. 01536 511532
Cheers
Steve Randall
Give me a call on Monday when I am back at work. 01536 511532
Cheers
Steve Randall
-
- Member
- Posts: 208
- Joined: Wed Aug 19, 2020 11:22 am
- Location: Dorset UK
Re: Jammed oil pump
Hi Steve, I have a good G2 set, really need a 1961 G5 set.
as well as a good crank rebuilder.
as well as a good crank rebuilder.