These are images of R5-D4 as seen in 'A New Hope'
They are found pictures that I've used as reference for my build.
The above picture show's the replacement centre leg. This was swapped over from the original R2 style [twin cylinder] to a fixed outer leg ankle after the conversion from 2 leg's to 3 legs operation failed to lock in place. R5 faceplanted [YouTube video], so a fix had to be found.
This image shows the problem that R5 had with his centre leg.
Note he has two ankle cylinders on his centre foot,
along with half moon foot shells.
Behind the scenes pictures
This is from inside the Jawa Sandcrawler
The following are from the film set.
Operation of the 'Bad Motivator'
This pic show's R5 has an outer foot for his centre foot!
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Other R5 Astromechs
These two pictures are NOT of R5-D4 but are of R5-D8.
He was Jek Porkins astromech - Battle of Yavin.
He is identical in looks to R5-D4.
These two are Imperial R5 Units
These two have different features to 'standard' R5 units.
Note the centre foot on the right droid & it's 'binocular' eye sensors.
The left droid appears not to have a rotating ring for it's dome
[poss because it was just stationary for the film??]