dieselfuelonly Posted April 27, 2021 Share Posted April 27, 2021 (edited) We have a RD690S with an EM6-300L that has a cracked flywheel housing. Found a good used replacement, 2 questions. When I pulled the old one off there was no gasket between the block and flywheel housing, just some RTV. It's been off before, apparently someone tried to weld the cracks in the past. Does a gasket exist, or just use RTV or some other sealant? Our Mack parts guy hasn't been too helpful on this old truck. Also, since this isn't the original flywheel housing that came with this engine, do the dowel pin holes need to be reamed and oversized pins installed, or if the fit is tight just roll with it? Thanks for any advice. Edited April 27, 2021 by dieselfuelonly Quote Link to comment Share on other sites More sharing options...
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