Hoover D6392 reversing dryer belt change

Changing the belt on a D6392 dryer, got the belt around the drum OK but one of the rollers fell off next to the motor. Need help with how the belt feeds around the roller and motor. Also were the spring fits?
I paid on one of these expert sites for an answer but got nothing, hope your site is better. A picture would be great.

I assume you mean the belt tensioning wheels as opposed to the drum support rollers on a hoover.

The belt goes round the motor shaft and a wheel goes either side of the belt,
simple diagram

. .O (Drum)
. .oVo (belt with tensioning wheel either side, bottom of V is motor shaft)
. . \-/ (arms with spring)

there should be a small spring that connects the two arms of the tensioning rollers that goes in holes in each arm.

Thanks Leccy758,
what you suggested I have already tried but gave it another go. The belt is too loose and does not grip, the motor turns freely. I tried looping the old belt round and this to did not grip. Its as though I am a tensioner missing.
its driving me mad, it should be so simple.

I hope you don't mind asking you for advice but you seem to be my last hope as i cannot find anything on this make of tumble dryer. What it is the machine was making an awful noise so we bought some new pulley wheels for it. My husband has taken it to bits but now he cannot remember how to put the belt over the wheels?? The wheels have a spring inbetween them. All the other machines seem to have 1 wheel and not 2, and with the fact i cannot find any help or diagrams as to how it goes on we have a dryer that is so far scrap. Like i said i hope you don't mind me asking as this is the only thing stopping us from putting it back together and using it. He didn't notice how the belt went over the pulley wheels before he took them off ! I can see the reply you have written but i cannot make any sense of it to be honest. Can you give us a step by step breakdown of it please?

Thank you very much,

Kind Regards,

Salleycat123