A while back I had one of the oil ring accidents with the oil cap https://sprinter-source.com/forums/showthread.php?t=721&highlight=oil+cap+ring), and the fan sprayed the oil everywhere inside the engine compartment. I washed down the engine, but the felt insulation was soaked. For a over a year I have been ignoring it. But, even though the oil smell has dissipated, the felt is still oily and collecting dirt. So I decided to replace it.
Part 05104486AA from Berry and 15 "rivets."
The first job was taking it off. The plastic rivets don't come off easily; the process is to pull the center expansion plug out - indeed I only got one off without destroying it. Fortunately, I bought enough - it takes 12. Eventually, I drilled the centers of the rivets out. Then it takes only seconds to pull the insulation off.
This is what a slightly beat up rivet looks like:
Picture of the old insulation with the oil stains.
The hood is very tinny-sounding. [Note that this sound is from the fresh air vent's metalwork built into the hood. I already have 3M ScotchGuard on the exterior of the hood which does a good job in reducing its sound.] I didn't have any Duramax-type stuff handy and couldn't find my roll of window sealer, but I had a partial bucket of cove base glue, which I figure should provide enough mass to stop the higher pitch metal vibrations - and once dry not be too heavy itself.
Putting in the new insulation went fast with an extra pair of hands. Remember to not push the plug until the base of the rivet is in the hole in the hood. About half of the rivets will require some gentle persuasion.
Part 05104486AA from Berry and 15 "rivets."
The first job was taking it off. The plastic rivets don't come off easily; the process is to pull the center expansion plug out - indeed I only got one off without destroying it. Fortunately, I bought enough - it takes 12. Eventually, I drilled the centers of the rivets out. Then it takes only seconds to pull the insulation off.
This is what a slightly beat up rivet looks like:
Picture of the old insulation with the oil stains.
The hood is very tinny-sounding. [Note that this sound is from the fresh air vent's metalwork built into the hood. I already have 3M ScotchGuard on the exterior of the hood which does a good job in reducing its sound.] I didn't have any Duramax-type stuff handy and couldn't find my roll of window sealer, but I had a partial bucket of cove base glue, which I figure should provide enough mass to stop the higher pitch metal vibrations - and once dry not be too heavy itself.
Putting in the new insulation went fast with an extra pair of hands. Remember to not push the plug until the base of the rivet is in the hole in the hood. About half of the rivets will require some gentle persuasion.
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