Originally Posted by pallantejm
I've narrowed down an engine
starting problem to the crankshaft / starter area. Possible spring replacement needed. I have removed the bolts and cover piece and have found that there is no bolt inside holding two parts
together, instead it appears a special tool is required to turn and move a locking mechanism inside?
I've attached images
. At the moment, the info I have is that it's an old (early 80s?) LPW3 model Lister Petter (they were used as backup generators in the post offices here in NZ before they stuck the water
intake on em and turned them into marine
Just trying to figure out the best way to remove without causing any damage, and what tool would be best to use.
You had me confused for a bit, but I think we have a nomenclature problem here.
When you say you have "an engine starting problem to the crankshaft / starter area", the initial response is to look at the engine starter, which on your engine, viewed from the front, should be at the lower left rear corner of the engine block, and is an electric motor
used to start the engine.
Since you're working on the front of the engine, near the engine start and speed control mechanisms, I assume you're talking about a governor spring residing behind the gear
To access that, it appears that you need to remove the cover, which entails removing the pulley and the bolts holding the cover on. There is a special tool that enables you to use a ratchet to remove the left hand thread pulley, but, depending on the tightness of the pulley, it might be possible to get some longer bolts, install them and use a bar on the protruding sections of the bolts to spin the pulley off, after securing the crankshaft from turning.
If it turns out that the pulley is very tight (likely), then a tool can be fashioned by welding an old socket onto the center of a short piece of flat bar with two hole drilled in the appropriate place, or two holes can be drilled into a long piece of flat bar and it can be attached directly to the pulley and be itself used to loosen the pulley.
If it's really stuck, heat applied judiciously can work
That's an interesting little engine, the injection system is kinda halfway between unit injectors and a single
. From a user-servicable standpoint, looks like a good idea, at least in concept
A good service
manual is important.
Also a good parts manual, though I can't say the factory-supplied one is particularly user-friendly...