Hello Good People,
So I took apart the starter motor and here is an image of the starter brushes.
Are these too short or would you say they are fine?

T.I.A.

 

I'm surprised they didn't pop out of their holders being that short.
My guess your not in the U.S. as any (expensive) unit item like a starter, alternator, distributor (94-95) or steering box dealerships know only to removed and replace these items as a unit. Standard procedure service repair tags, "CUSTOMER PAYS" was all I saw at a couple dealership work orders plus checking the parts departments in my area. Not cheap items at that. Bearings, get the bearing numbers and replace at your local bearing supply as well steering box rebuild kit plus brush kits ordered from England and shipped to your location. Big savings being a DIY person.

On a brighter note a starter failure is no biggie, "bump start" your Disco being it's a 5-speed and and not a slush box so you can still drive it.
Personal experience, Lucas and Bosch starters are rubbish, the brand that has outlasted them all several times over and still functioning has been the Nippon starter. Having an engine that fires off on a cold start by the second cylinder over compression also extending starter life by a large margin, 10 years and counting the Nippon starter.
95 D1, 5-speed, with a 4.6.......~~=o&o>......

 

My NipponDensor starter that took a month to receive finally arrived. It rocks a 1.9HP. I am back on the road.
Thanks

 

After 10 years as a soccer mom and kids to school taxi the most extreme starter, transmission and clutch test bar none. Knowing a lifetime family friend in the starter, generator and alternator rebuilding business for over 45 years knowing what's best to use by brand name from dealing with Land Rover's starter failures. No sales pitch just what works by a person in the repair business vs parts stores and dealerships pushing what they have on the shelf as "the best".

Thanks for posting final results that can also help others Toran. Owning a 95 Disco One 20 1/2 years, DIY I became one and personal in maintaining, trouble shooting and repairing a Disco. It also has it's rewards, your wallet and wifey will also thank you.

Had to ask, what type of fluid you running in your manual transmission as Land Rover hasn't a clue what flavor of the month to use i've found over the years vs ATF which doesn't have the lubricity properties of lubricating oils ans protection over the long haul?
Land Rover dealerships were adamant about using only one brand of anti-freeze coolant which later became different brands due to what gave the dealerships the cheapest brands to buy in bulk barrels. Go and figure that one out who to trust? Shoot me a PM vs open forum regarding other matters......Carl.....~~=o&o>.......