The shot of the 86 class locos at Lithgow brings back memories as I used to work at the now closed depot. The electric loco fleet was maintained at Lithgow. It consisted of 40 Metropolitan Vickers 46 class co+co from 1956. 10 Comeng (Commonwealth Engineering) 85 class co co from 1979 and 50 Comeng 86 class co cofrom 1982. Actually there was only 49 86 class with a co co wheel configiration as 8650 was a tri Bo. The red pantographs on the locos are not new but were washed before every inspection for metal fatigue testing. I know that because I and my workmates used to do it. We used a strong alkaline/ acid mixture to remove the overhead wire residue. We also washed the roofs of the locos too. We also washed diesel locos of the 81, 80, 48 classes mainly and also washed the Manildra Group 100 ton flour hopper bogie wagons. All washing was done by the bucket and brush method. There were no automated washing plants for locomotives on the railways, only multiple unit EMU's and the XPT were put through automated washing plants.
I should also add that the 3 82 class are not in Pacific National livery but actually painted in Freight Corp livery, the livery they were delivered in when new. They just have "Pac Nat" stickers below the cab windows.