Bleed cooling system?
 

Bleed cooling system?

Started by Emcemv, August 31, 2014, 02:59:43 PM

Previous topic - Next topic

Emcemv

I've recently changed all my coolant hoses......I just filled everything back up and started her up and all seems good, do I need to bleed the air from anywhere?  I was worried about the air compressor?  I had the front heat valves shut off and I know about the bleeder on the heater core.
Bruce & Nancy Fagley
1973 MCI MC-7 Combo Freighter
450HP DD 8V-92T 2000 Reman
HT 740 Allison
Woodbury CT.

luvrbus

Air only traps at the highest point in a system if it does the compressor will be fine
Life is short drink the good wine first

bevans6

There may be a cross-over tube between the two thermostat housings with a bleed valve, that will bleed the engine.  I do that one when I am filling the engine with coolant, not while it's hot.  There is a bleed valve on the drivers heater core that may need to be bled.  Other than that you should be good to go.

Brian
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia

lostagain

On the 6V92 I have in my 5C, there is a bleed valve at the rear of the engine at the back of the blower that is hard to reach but you need to do.

JC


Sent from my iPhone using Tapatalk
JC
Blackie AB
1977 MC5C, 6V92/HT740 (sold)
2007 Country Coach Magna, Cummins ISX (sold)

TomC

My expansion tank is the highest point in the cooling system (as it should be). I have a small bleed line from each thermostat going to the expansion tank. That automatically takes care of bleeding. Good Luck, TomC
Tom & Donna Christman. 1985 Kenworth 40ft Super C with garage. '77 AMGeneral 10240B; 8V-71TATAIC V730.

luvrbus

His MCI should have the same hose going to the tank all Eagles do
Life is short drink the good wine first

Emcemv

Tom/Clifford

Yes, mine has the hoses from the thermostat housings to the expansion tank so it sounds like I'm all set.  I do not have a bleeder on the crossover tube between the thermostats though.
Thanks for the answers!
Bruce & Nancy Fagley
1973 MCI MC-7 Combo Freighter
450HP DD 8V-92T 2000 Reman
HT 740 Allison
Woodbury CT.

luvrbus

Don't worry about the bleeder on a cross pipe very,very few 8V92 ever had one as very seldom they never used the full blocking thermostats
Life is short drink the good wine first