Here's some information on taking your existing transmission to bits

722.118 Automatic transmission rebuild (Monster DIY)

I reckon you've got a 722.118.

Changing just the front pump and replacing the torque converter sounds like it might be a good fix.

However, you might also have worn splined shafts - see thread link above for more information - in which case you either need to find a replacement 722.118 or a different 722.1 for parts.

Fitting a 722.1 transmission not designed for your car will cause difficulties such as shifting points, throttle linkages, and vacuum system.

If you want to see which transmissions (say a 722.3) that will fit your car I might have the information you need here

FSM + EPC data => Chassis / model / transmission / drive train information

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!