Cummins 6CTA 8.3L impellers in 400 Sedan Bridge

[Kilobravo]

Starboard is relatively easy to replace. Port is difficult to say the least. Does anyone have any tricks/tips to make the task more manageable? :huh:

 

[SR400DB]

Difficult....ha, it's beyond difficult. I remove the aftercooler and am then able to work my way around the outboard side of the motor. Have someone handy to help with tools, put a towel/cushion over the engine mount (for comfort), lay on your left side and it's not too bad. I did get this one done one time from the top with a mirror and feel. But that was LONG process for me anyway.

 

[sbmar.com]

I can't help much on the access the builder supplied, but for sure, following my tips below will ease the pain of the rest...........................

Tricks & Tips to Extract an Old Impeller & Installing a New One This is something that should, or needs to, be done with ALL impellers when you are removing them... Once the cover plate is removed, you need to spray WD-40 (or something similar) inside the housing and into the spline or key & shaft area (liberally) and then BUMP the engine. Then spray it one more time and bump the engine again... TWO times and now that impeller is ready to be removed. Once you do that, it will "break" the dry bond that always seems to occur between the rubber and the housing and also loosen up the spline (or key)... This is essential during any impeller removal and now the impeller will slide out EASILY... When installing a new impeller, throw out all that crap about lubing —Use any common white lithium grease (or similar grease) and life becomes easy for all.. Instant prime too.. Be sloppy with it, coat all inside, shaft and impeller and I personally guarantee it with not hurt your impeller if you are planning to finish the job and test the engine within a few days or so.. That old wives' tale has got to go—But, if this makes you squeamish, then go ahead and use a synthetic or silicone based grease made specifically for all types of rubber elastomers.… Also, all that crap about which way the vanes have to go is also just that—TOTAL CRAP.. It makes ZERO difference as the split second the engine cranks, the blades will flip as needed. But of course, after any impeller replacement, do a test and check for leaks, etc.. Happy Fishin’………….Tony