Lister st3 engine - oil filter? Injection pump?

[john davies]

My son has got involved with a Narrowboat Trust and has asked me to start servicing their lister st3.

 

Alll very well. I have been working on engines for 40 years so, I thought, not a problem.

 

We couldn't find an oil filter - just a pinkish cap that possibly ought to have a gauze under it or perhaps a small paper element. I have found a shot of an ST3 on you tube fitted with a cannister oil filterbut have no idea if ours one can be - it could well be mid seventies or so. .

 

The oil was like glue so pumped it out anyway and changed it - and will change it again. Cured a few diesel leaks.

 

i have downloaded a manual but it is less than useless as it covers too many engines.

 

 

Quesions

 

1. Where do I find a steel gauze if that is what it has - have looked on the internest for 'st3 gauze' with no success.

 

2. Is it possible to fit for a cannister or paper element one - is there a kit? I have found a mann filter W712 which it is said will fit - but can it be retrofitted to early engines without any sort of fitting kit.

 

 

 

On a different tack - how does the bloody thing work? I was just coming away and thought 'where is the injector pump?' I traced all the pipes and couldn't find it. There was a lift pump but no external injector pump. Or is it beneath the injectors somehow. There were two pipes which seems to bolt direct to the casing so perhaps it is behind there. The only other pipes were leak off pipes. Perhaps the injectors are driven by an internal shaft.

 

I admit I didn't have much time to stand and work it out, and it was dark and horrible down there!!! I am somewhat confused. Anybody got some photos which will give me a clue?

 

 

Thanks

 

John davies

Edited March 31, 2014 by john davies

[The Ents]

There's a manual for these engines on Ebay item No.

171277398647

( Don't know how to do a link!)

The injector pump is underneath the air cooling housing, I think.

Mike.

[john davies]

Found a manual on the internet - marked winget but covers all ST engines - so I am right about the injecion pump.

 

Buit what of the oil filter - a canister oil filter is mentioned in the manual but a cap similar to ours is shown in the photos - so it is just possible to screw one on to early models or must I find a guaze somewhere? I asked in a boatyard and got a vague 'dunno really but a lot of people with guazes take them out anyway'. from the mechanic!!

 

Thanks

 

John D

Edited March 31, 2014 by john davies

[richardf]

I would talk to Marine Engine Services - Chris Bennett (01895 236246)

01895 236246 01895 236246 01895 23624 01895 2362

I'm sure that he can help and can probably source any spares you need

[bizzard]

The ST doesn't necessarily have an oil filter. The circular blanking plate with a centre screw holding it is where it goes which is under the outlet ducting on the starboard side next to the fuel lift pump on the crankcase door. If you decide to fit an oil filter you will need to make sure that the oil inlet and outlet ports behind that plate are connected to the oil pressure system behind the crankcase door and that there is the threaded stub that the oil filter screws onto. The wire gauze strainer lies in the bottom of the crankcase below the crankshaft, access to this is behind the same crankcase door that the oil filter is or would be attached to. The oil filter number is FRAM PH2834.

There are tree separate 'connected by rack rods' Bryce injector pumps behind the side plate door, the door that's above the crankcase door.

[john davies]

Brilliant chaps - thanks for all your help. I am now a dedicated convert to the forum!!!

 

If anyone else needs the workshop manual it is here

 

http://www.winget.co.uk/document/LISTER%20ST%20WORKSHOP%20MANUAL.pdf

 

Regards

 

John davies

[Roadsteam]

I changed an STW3 marine lump from bypass plate to filter by just unscrewing the plate and screwing the filter on, no bolts or anything as the blank is internally threaded the same as the filter. The then spare blank was used to replace a filter on an ST2 that used to crack the filters case due to sitting so close to the beds that the case touched as the engine vibrated causing a fatigue crack.