Force endlessly hurt when called into question (9)

I believe the answer is:

impeached

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'called into question' is the definition.
I can't judge whether this definition defines the answer.

'force endlessly hurt when' is the wordplay.
'force' becomes 'impel' (synonyms).
'endlessly' means to remove the last letter.
'hurt when' becomes 'ached' (I've seen this in another clue. I am not sure about the 'when' bit.).
'impel' with its final letter taken away is 'impe'.
'impe'+'ached'='IMPEACHED'

Can you help me to learn more?

(Other definitions for impeached that I've seen before include "accused" , "Prosecuted" , "charged" , "Cheap dime (anag.)" .)

I've seen this clue in The Independent.

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