Started the week by trial fitting the cab door window after epoxying the bottom glass channel after the welds broke last week.  The glue used is a particularly strong variety and should hold, especially as the window is a tight fit in the door.  It needs to come out, though as various minor issues raised their heads.  Returned then to the rear brakes, and it is clear that there is something wrong in the assembly of the N/S rear brake as it is unable to return to rest as it should.   I was unable to free up the scissors adjuster, nor could I remove the nut on the end of the brake cam shaft, without resorting to cutting it off, with resultant risk of damage to the shaft, so decided to try and fit the drum then adjust the brake by shortening the operating rod.  In the end the drum slipped on easily over the new linings, so freeing up the djuster can wait for another day when the bus is over a or on a lift.  I noted that the inside face of the drum was in excellent condition, suggesting it had recently (relatively speaking) been skimmed.  I next reasembled the adjuster, leaving some free play in the nut in case the repeated operation of the brakes actually freed it up, then moved on to the other side, preparing for refitting the drum, which included removing the loose rust and degreasing it.  So refitting it will be Monday’s first job.  Not a lot of progress this week!