| Re: [GMCnet] JC-4 Vacuum Pump?? [message #323863 is a reply to message #323861] |
Thu, 14 September 2017 06:11   |
rjw
Messages: 697
Registered: September 2005
Karma:
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Senior Member |
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Jerry Wheeler wrote on Wed, 13 September 2017 23:24Why not do the test with the ignition left on?? Perhaps our coach will
stop with the pump running. If my motor dies, I would not turn off the
ignition switch; I would want to be able to steer the coach when rolling,
even if I did not have brakes. By the way, I have the Delco vacuum pump
that is not longer available, but I have not tested my brakes; I have my
vacuum pump wired to a separate source for 12v, not the ignition switch. I
probably should do the same test you did Richard.
JR Wheeler 78 Royale NC/OR
I tested with the ignition off, to see what happens without any vacuum. Also, with the ignition on, to see how helpful the JC-4 pump would be in the event of an engine failure.
All this time I thought I was covered in the event I lost vacuum.
Previously I had a Delco pump and that worked. It fell apart and since there were no replacements available at the time I went to the JC-4.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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