Smallframe engine splitting

Anything related to Vespas... ask tech questions, post helpful info, or just read and learn.
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

Where is the best place to tap the engine apart?

The area circled in green in the picture seems to made for it but I dont wamt to smack it too hard and fit out its not

Image

Ignore the red circle thats just a stud where the thread is stripped :(
lambro
registered user
Posts: 476
Joined: Wed Jan 07, 2009 7:41 pm
Contact:

Snails wrote:Where is the best place to tap the engine apart?

The area circled in green in the picture seems to made for it but I dont wamt to smack it too hard and fit out its not

Image

Ignore the red circle thats just a stud where the thread is stripped :(
I see two red circles :?
Do you have a stripped thread on you mug of tea as well :shock:
lambro
registered user
Posts: 476
Joined: Wed Jan 07, 2009 7:41 pm
Contact:

Awkward job depending on which fly bearing is used.
Start with gentle taps and try to tap the flyside off the crank side,
The sticky out areas are prime for it, but break easily, once you have it moving wiggle it backand forth and it will come.
Again, try not to prise anything between the halves.
monument7
registered user
Posts: 59
Joined: Fri Dec 28, 2012 6:38 pm
Main scooter: Li auto conversion 180
Contact:

Where is the best place to tap the engine apart?

Do you really think you should be doing this ? :-)
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

lambro wrote:Awkward job depending on which fly bearing is used.
Start with gentle taps and try to tap the flyside off the crank side,
The sticky out areas are prime for it, but break easily, once you have it moving wiggle it backand forth and it will come.
Again, try not to prise anything between the halves.

Thanks :)
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

monument7 wrote:Where is the best place to tap the engine apart?

Do you really think you should be doing this ? :-)
Are you offering to come around and do this for me?
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

lambro wrote:
I see two red circles :?
Do you have a stripped thread on you mug of tea as well :shock:
ha I think you will find that is a semi circle if you look closely
User avatar
wack 63
registered user
Posts: 1254
Joined: Fri Nov 27, 2009 9:33 pm
Main scooter: '71 GP TS1
Location: Lincs
Contact:

Make sure you remove the plug first(in the green ring),but refit the bolts first. Provided the clutch and primary drive cog are removed gentle taps with a plastic/rubber mallet should split the casing. Some flywheel side crank bearings are one piece and the crank will come out with the casing, gently tap it on the drive side as you open the casing. Same with the gear cluster.Dont be tempted to screwdriver between the casings and damage the joint.
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

wack 63 wrote:Make sure you remove the plug first(in the green ring).


Should that just tap out from flywheel side to clutch side?
wack 63 wrote: but refit the bolts first.
wack 63 wrote:

Do you mean the d bolts? Why? Do you mean with the nuts not fully tightened?
User avatar
wack 63
registered user
Posts: 1254
Joined: Fri Nov 27, 2009 9:33 pm
Main scooter: '71 GP TS1
Location: Lincs
Contact:

Knock the peg out towards the hub, by refitting the bolts and nuts it will stop the casing lug breaking as the peg can be tight.
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 8 guests