Author Topic: Removing bearings from gearbox  (Read 1934 times)

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Offline ste

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Removing bearings from gearbox
« on: 03 May 2014 at 02:36 »
Any ideas how to remove the bearing from the gearbox casing on a 1924 TS please? I've go the other 3 out but this one won't budge and there's no way of getting a punch onto it. It's the larger of the two.

Offline cardan

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Re: Removing bearings from gearbox
« Reply #1 on: 03 May 2014 at 04:03 »

Let me suggest the following:

1. Wait until wife/partner/housemate is out.
2. Wrap gearbox case in aluminium foil (stops it heating up too quickly, and does something to confine the worst of the fumes).
3. Put in cold oven and heat to, say, 150 C for 30 min - 1 hour
4. Using rags/oven gloves/whatever remove the case from the oven. With bearing pointed downwards, gently tap the flat face of the case on a wooden surface (say lightly bang it down from a height of an inch or two). An old piece of flat timber laid on the concrete, or your wooden bench top is better than the bread board in the kitchen. The jolt should cause the bearing to fall out.
5. Hope you put the extractor fan in the kitchen on first. If not, open all available doors and windows and hope bad smell disappears before the person mentioned in (1) returns.
6. Let the case cool slowly.

Don't hit anything with anything hard, and don't use a torch unless you're both skilful and brave!