Am i removing the right parts for glow plug change on W211 280 CDi?

[Murff]

Hi, just thought I'd check I'm on the right track before attempting to change my glow plugs. Firstly it seems I need to remove the ducting from the air filters to the turbo





It's also looks like this harness needs to come off





Finally not sure how these glow plug caps come off, do they simply pull off?





Any advice always appreciated

 

[joesoap]

Take the Glow plugs out with engine hot and be careful if putting new ones in they are easy to strip.
Caps should pull off