UPDATE 2-German vote on Greek bailout carries risks for Merkel
* Risk of rebellion in conservative ranks
* Bild says up to 120 CDU/CSU members may vote against bailout
* Schaeuble says scope for Greek debt relief not very big (Adds Greens reaction, CDU comment, detail on Merkel trips)
By Noah Barkin
BERLIN, Aug 15 (Reuters) - In a major test of her authority, Chancellor Angela Merkel will ask sceptical German lawmakers to back an 86 billion euro ($95.5 billion) bailout for Greece on Wednesday despite uncertainty over whether the IMF will play a role in the rescue.
Parliamentary approval is not in doubt because the Social Democrats (SPD) and Greens are expected to back the deal. But the vote could expose a deep divide among Merkel's conservatives, damaging the German leader and her close ally Volker Kauder, the head of her bloc in parliament.
Kauder, who incensed fellow lawmakers last week with threats of retaliation if they rebelled and voted against a bailout, has described the involvement of the International Monetary Fund as a "condition" for the support of his party.
However under the bailout approved by euro zone finance ministers at a meeting in Brussels late on Friday, it is unclear whether the IMF will end up playing a role.
IMF Managing Director Christine Lagarde told the ministers by telephone that she could not commit until her board reviewed the situation in the autumn. She renewed a call for "significant" debt relief for Greece, a demand Merkel's government has repeatedly pushed back against. Continuación...