Fitting GOE compressor guard after an AMK compressor install?

[BSM]

Preamble

So i fitted a new AMK suspension compressor today to my D3. Thanks to Disco Mikey's instructions, all went well. Make sure though that you insert the brass tube into the exhaust tube before fitment. Disco Mikey doesn't make that clear up front. His instructions are far clearer and more detailed than the LR instructions though . I would never have done it with those alone thanks Mikey.

Mikey also says to get three new captive nuts. I spoke with a mechanic atMLR, and he said that they never need to replace them in Australia because they don't normally corrode here. So don't get them unless you must.

I flashed the ROM on the Suspension ECU with by IIDTool, and all appears good. Just one final step to finish the job. Re-fit the GOE Compressor protection plate.

The GOE plate doesn't fit properly anymore.

The AMK compressor lower cover is a different shape. It hangs lower, and I am finding that GOE plate doesn't butt up properly against the chassis and the sill. I don't think it will take any serious load properly in this configuration.

The image below shows that the guard no longer bears on the chassis


It appears that the main thing stopping it seating properly is the conical shaped drain port on the lower compressor guard.


So there are two options I think. Either build up the edges on the guard with some aluminium flat bar and glue,


or slice off the conical port on the compressor lower cover. Not sure it this will open it up too much for mud ingress though.



So what do members think is the best approach here? Happy for Gordon to chime in too of course.

[gghaggis]

If you relocate the compressor a little higher, the plate should fit without any mods - loosen the compressor mounting bolts to the chassis rail, gently push it up with a jack and re-tighten.

Cheers,

Gordon

[BSM]

If you relocate the compressor a little higher, the plate should fit without any mods - loosen the compressor mounting bolts to the chassis rail, gently push it up with a jack and re-tighten.

Cheers,

Gordon

Will try that Gordon. Thanks.

[AnD3rew]

Yep, I didn't do it myself, but they managed to get my plate to fit properly back on after the AMK install.

[BSM]

Yes that did the trick Gordon thanks. I also took a drill and lengthened the hole for the rearmost screw in the lower compressor cover. That allowed it to lift upwards by about 2 mm also. All good now.

[~Rich~]

I too has this issue, I kept on hearing an annoying noise like a creaking going over bumps and going around corners.



It only started happening after replacing the Hitachi compressor with the AMK one. I took the plate off and the sound disappeared. After reading this thread I tried moving the compressor up with no success in stopping the noise from occuring.



So I decided to modify my GOE plate like this:





Only a couple of scratches on the plate!











Fixed it.

[LRD414]

If you relocate the compressor a little higher, the plate should fit without any mods - loosen the compressor mounting bolts to the chassis rail, gently push it up with a jack and re-tighten.

I also took a drill and lengthened the hole for the rearmost screw in the lower compressor cover. That allowed it to lift upwards by about 2 mm also. All good now.

So I decided to modify my GOE plate like this: ... Fixed it.

I have the exact same issue on my MY14 D4, having fitted GOE sliders and compressor plate this weekend just gone. Interesting mod Rich but I'd like to try a slight move to the compressor mounting first and slotting the cover mount too.

However, I could see 2 x chassis mounting bolts for the compressor mount but thought I could feel a 3rd higher up that seemed very difficult to access.

So, BSM and Gordon (or anyone else), is there 2 or 3 mounting bolts? And if there's 3, how did you access the higher 3rd one? I'd rather not detach the compressor from its mounting plate.

Regards,
Scott

[~Rich~]

Yep 3 bolts, one up high.
You need a ratchet spanner like this to reach it:

[LRD414]

Thanks mate. Obviously it didn't work for you but did you get any movement of the compressor mount upwards? Just not enough, hence your plate modification.

Scott

[Fred Nerk]

I was one of the first to worry Gordon with my trying to fit my compressor plate after an upgrade. After several attempts I fluked the right combination of pressure, loosened bolts and wriggling. After not fitting, everything fell into place. Now it is snug, but not placing a lot of pressure on the compressor.

My advice, keep trying and you might get it to fit without any additional modification.

I should add that I have rock sliders fitted which do provide some extra spacer effect.