Glad we were of some help, Joe. I only regret that the diagram copy I have isn’t higher resolution. Zooming in can help, but if you can’t make some of the writing out, let me know; taking a photo of fuzzy text doesn’t help it.
The Haldex cartridge is a good brand, commonly used by BAC supporter, Henderson’s Line Up. If you order from Amazon, that’s fine per getting the best price; just be sure it is a reputable brand. I’m not sure in this case I’d necessarily trust Amazon reviews, and on these coaches going cheap on parts is not advisable. It’s like our mantra to use only CAT filters and parts on our CAT engine systems.
I did think from one of your posts that you’d finally spotted the dessicator, but I included the photo just in case. The filter doesn’t require it, but if you’re going to check other components under the rig, be sure you block the frame strongly, or put the tires on ramps, especially when messing with air devices.
Joel