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+--- Thread: vacuum diagram for '85 617 with manual tranny (/showthread.php?tid=4424)
vacuum diagram for '85 617 with manual tranny - Syncro_G - 03-16-2013
I'm working on the next phase of my engine project - replacing the 722.4 with a getrag 5-speed. This used to be a Calif engine (OM617.952 from a 300TD) that has been federalized, de egr'd, etc. and still has the original MW pump with all the vacuum bells and whistles.
I have questions regarding the proper way to set up vacuum --
1. to switchover valve (#126) and boost pressure
(I assume I should keep this in tact)
2. on same input to IP as above, is another line to the vac amp (#123)
(cap this? I'd love to get rid of the blue thing)
3. vacuum control valve (#65 on IP)
(not clear what I should do for this one.
it does make a somewhat direct path to the vacuum pump via several restrictors)
4. filtered inlet from cabin (a)
(keep)
(numbers refer to the standard EGR diagram http://www.superturbodiesel.com/std/attachment.php?aid=2045)
RE: vacuum diagram for '85 617 with manual tranny - DeliveryValve - 03-17-2013
1) keep.
2) delete line and #123- this is for the auto trans shifting. Then use the open end as a port for your boost gauge or plug it up with a new sealed banjo.
3) delete - this again is for auto trans shifting.
4) delete- don't need this with the removal of #65
RE: vacuum diagram for '85 617 with manual tranny - Syncro_G - 03-17-2013
Thanks DV, this will clean up nicely!
(03-17-2013, 12:35 AM)DeliveryValve ...Then use the open end as a port for your boost gauge...
This makes sense if you remove the switchover valve (#126) else I think you'd end up with an intermittent gauge signal.