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Old 01-05-2013, 11:25 PM   #15
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1984 34.5' Airstream 345
Foothill Ranch , California
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Just an FYI on the heater valve issue...

I was skimming the P30 Chassis Manual, and in Section 7B, it specifically states that there should be no valve placed in the heater hose line...
Not being super familiar with teh coolant flow on teh MH, I dont know, but I suggest its looked at!
http://www.bdub.net/manuals/P30/P30.pdf
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Old 01-06-2013, 01:21 AM   #16
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2005 25' Safari
Salem , Oregon
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Quote:
Originally Posted by bkahler View Post
Do you have problems getting the dipstick to slide down the tube? On a SOB motorhome that we had the dipstick was a real bear to get back down into the tube. Our 310 is better but can be finicky at times.

Brad
Hi, with vehicles that I have worked on, I found it was much easier to re-install the dip sticks by giving them a slight twist as you push them in. Just pushing on them, is almost impossible to make the dip sticks go all the way in.
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Old 01-06-2013, 08:35 PM   #17
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1974 20' Argosy 20
Richmond , Kentucky
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Quote:
Originally Posted by Keyair View Post
Just an FYI on the heater valve issue...

I was skimming the P30 Chassis Manual, and in Section 7B, it specifically states that there should be no valve placed in the heater hose line...
Not being super familiar with teh coolant flow on teh MH, I dont know, but I suggest its looked at!
http://www.bdub.net/manuals/P30/P30.pdf
I didn't see where it said no valve should be installed, I only saw reference to the H valve which is what I've bought for the Argosy. Found one on ebay for $48 delivered. The number mentioned in the manual doesn't appear to be available anymore.

Brad
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Old 01-06-2013, 09:25 PM   #18
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As I said Brad, I really have not looked hard at the cooling system yet, but if you look at the top rh side of page 7-16, you will see the statement I saw.
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Old 01-06-2013, 09:33 PM   #19
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1982 28' Airstream 280
Port Angeles , Washington
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Quote:
Originally Posted by bkahler View Post
I didn't see where it said no valve should be installed, I only saw reference to the H valve which is what I've bought for the Argosy. Found one on ebay for $48 delivered. The number mentioned in the manual doesn't appear to be available anymore.

Brad
Just was looking through the manual, here is the section.

RADIATOR/HEATER AND ENGINE
DEAERATION SYSTEM (After 1983 Model)
Heavy-duty cooling equipment is required when air conditioning
or auxiliary belt-driven equipment is 'installed.
Continuous coolant flow is necessary from the heater connection
on the engine to the heater connection on the
radiator to control oil temperatures during closed thermostat
(warm-up) operation. Shutting off this flow may
result in premature engine or transmission failure.
If a heater unit is not installed in the vehicle or a heater
shut-off valve is required, a line connecting the heater
connection on the engine to the heater connection on the
radiator must be installed . When
a shut-off valve is required
in the heating system, it must be "tee'd" into the
system in such a manner as to maintain a continuous flow
between the engine heater connection and the radiator
heater connection at all times.

ENGINE COOLING SYSTEM
7-1 6
NOTE: The heater hose routing should not be altered
from the standard system. If an auxiliary heater
is added, it should be routed similarly to the RPO
(C36) rear heater. Where the heater water return
is routed to the radiator outlet tank, a shut-off
valve should not be placed in the heater circuit .
A nipple has been provided in the radiator outlet tank for
heater return water (Figure 7-18). The temporary rubber
shipping cap should be removed, and the heater return
(suction) hose should be attached to the radiator nipple
using the clamp supplied with the shipping cap.
Figure 7-18 - Radiator Outlet Tank - Heater Return
Water.
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Old 01-07-2013, 08:16 AM   #20
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1974 20' Argosy 20
Richmond , Kentucky
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Quote:
Originally Posted by Keyair View Post
As I said Brad, I really have not looked hard at the cooling system yet, but if you look at the top rh side of page 7-16, you will see the statement I saw.
Interesting. I only did a quick scan of the heater system and noted the information on page 1-8. I haven't had time to sit down and read through the whole manual as yet.

Quote:
Originally Posted by Smartstream View Post
Just was looking through the manual, here is the section.

RADIATOR/HEATER AND ENGINE
DEAERATION SYSTEM (After 1983 Model)
Heavy-duty cooling equipment is required when air conditioning
or auxiliary belt-driven equipment is 'installed.
Continuous coolant flow is necessary from the heater connection
on the engine to the heater connection on the
radiator to control oil temperatures during closed thermostat
(warm-up) operation. Shutting off this flow may
result in premature engine or transmission failure.
If a heater unit is not installed in the vehicle or a heater
shut-off valve is required, a line connecting the heater
connection on the engine to the heater connection on the
radiator must be installed . When
a shut-off valve is required
in the heating system, it must be "tee'd" into the
system in such a manner as to maintain a continuous flow
between the engine heater connection and the radiator
heater connection at all times.

ENGINE COOLING SYSTEM
7-1 6
NOTE: The heater hose routing should not be altered
from the standard system. If an auxiliary heater
is added, it should be routed similarly to the RPO
(C36) rear heater. Where the heater water return
is routed to the radiator outlet tank, a shut-off
valve should not be placed in the heater circuit .
A nipple has been provided in the radiator outlet tank for
heater return water (Figure 7-18). The temporary rubber
shipping cap should be removed, and the heater return
(suction) hose should be attached to the radiator nipple
using the clamp supplied with the shipping cap.
Figure 7-18 - Radiator Outlet Tank - Heater Return
Water.
I find it interesting that GM added a heater hose port on the radiator. This is something my 74 chassis does not have. I also noticed that this version of the P30 chassis manual has a LOT more information than my 74 version does.

I do want to add cooling fans in the front and I noticed this manual has a lot of information on the subject. I'm going to have to print the whole manual and do some late night reading

Thanks for the info!

Brad
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