First of all a company may remove its directors in General Meeting by way of Ordinary Resolution. Special Notice requires in this case.
Secondly, once incorporated, a limited company's members enjoy limited liability i.e. as they have paid for their shares they will be under no further personal liability even in the event of the winding up of the company.
Thus, being shareholder X and Y are not be responsible to pay 40% of the loan.
Thus,
1. Yes.
2. Yes.
3. Regarding liability of directors i am of the view that after removal X and Y are not entitle to repay the loan. It was held in the case of Dalmia (R.K.) v. Delhi Administration (1962) that "A Director will be personally liable on a company contrat when he has accepted personal liability either expressly or impliedly. Directors are the agents or the trustees of a Company."
Further Directors as agents do not incur liability for acts done in good faith on behalf of the company if such acts are within the scope of their authority [Pilkington & Co. V Hurten ] Where the directors exceed their powers, they may be held personally liable for such acts unless such acts are intra vires the company and are ratified by the members.