| Author |
Message |
HondoJoeMC5
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 22, 2005 - 11:50 pm: | |
Hi,
I am not getting any (heat) hot coolant flow-thru to the dash. Maybe it could be Air Locked??
The valve on engine is on. The valve upfront down left of the seat is in open position.
But I am thinking maybe this old valve is broke off inside as it turns REAL EASY. The shaft moves into the valve with no resistance.
So before I take it all apart to find out...Is it possible it could be air locked & not allow flow. I did remove the radiator cap to no avail...
Thanks, Joe |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 23, 2005 - 12:27 am: | |
Well,
A. Look inside the electrical panel flap outside the driver's
seat area. You'll see the valve and can tell if it's turning
with the inside control. If not, put it in the open position and
see if you get heat.
B. There's another valve you may be able to get to, under
the rear hand-hole at the center rear of the bus. It's a ball
valve (usually) located to the right of the hand-hole. and
must be on, also.
C. At the front right (pass side) bay, to the upper right, there's
a valve that's electrically controlled. If it's been replaced with
a manual one, open it. If not, make sure the hoses are hot on
both sides of the control. If not, the control isn't working.
Bypass it for a simple fix.
(how'zat for a frikkin rookie) |
Stan
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 23, 2005 - 9:57 am: | |
A MC-5 does not have all the above mentioned valves on the driver's heater. There are two valves in the engine compartment. Originally thse were one on each side of the engine block. The valve handle beside the driver's seat is connected directly to the valve and is not likely broken, but possible.
Remove the center panel onf the dash (in front of the gear shift and held on with two quarter turn fasteners) and open the air bleed valve on top of the heater core. There is no good way to catch any liquid that comes out the small bleed hole so have lots of paper towels hand while you bleed the air with the engine running. |
HondoJoemc5a
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 23, 2005 - 10:50 pm: | |
Thanks,
I will try the bleed off.
But my guess is the valve handle is broke off inside the valve. I can see the stem turn but there is no resistence at all to be felt.
So I will bypass it as suggested if broke.
Merry Christmas to Y'all!!!!!!! Joe |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 23, 2005 - 11:46 pm: | |
Joe-
Before you tear it apart and bypass it, see it it's hot on both
sides of the valve. If it's closed, only one side will be hot, right?
If neither side is hot, then you'll have to check the other valves
that were previously mentioned.. |
HondoJoe MC5A
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, December 24, 2005 - 1:26 am: | |
John,
No the pipe is not getting hot except for a few feet from engine. In front of the engine shut off valve. More later when resolved....Thanks, Joe |
HondoJoeMC5
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 25, 2005 - 11:18 pm: | |
Hi John/Stan,
Got it fixed.
The return line check-valve was evidently stuck.
This inline checkvalve is located inside left side service door. It Y's into main coolant line.
I disconnected the 3/4" heater hose from check-valve & flow started.
I tapped some on valve & it freed up.
So something new for me. Thanks for the tips too.
Merry Christmas, Joe |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 25, 2005 - 11:45 pm: | |
Good Goin', Joe!! |
Stan
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, December 26, 2005 - 10:13 am: | |
Joe: Is that check valve in the parts book? My MC-5 didn't have one and I can't think of any reason for it. |
HondoJoe
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 27, 2005 - 10:51 am: | |
Stan,
Good question, but I cannot answer.
Unless I looked into the parts book later.
Take another look to see if you have one.
It is as mentioned inside left side service door.
Look in & up to the rear. You can see the 3/4" copper return line (w/ check-valve in line w/ rubber hose & hose clamps). Line then drops down to main large coolant pipe where it Y's in.
Joe |