Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 08-27-2012, 12:04 PM   #1
Junior Member
 
Join Date: Jun 2011
Location: Coon Rapids, MN
Posts: 5
Dash A/Blower blowing fuses - 88 Winnebago

I have a 88 Winnebago Chief on a Chevrolet chassis.
The 25 amp fuse for which is labeled HEATER has started to blow.
I can replace it and it the fun will run for a period of time, and then it will blow again. My assumption was that the blower motor in the squirrel cage was simply heating up and needs to be replaced.

Dismantled what seems like the entire RV to get to where the heater motor is located. Too the assemly out ...tt has a single wire connection, and the ground was rusty so cleaned it up.. Plugged the motor back in and then turned on the Ignition to Acc and ran the motor on VENT... It ran for over hour with no problems at med-high speed...

I did notice that there seems to be a "TUBE" from the output that looks goes up to a hose that is not connected...This hose looks like it should connect to a hole on the motor so that air would blow into the motor housing but the motor is 180 from that spot. I have not checked to see if I could rotate the motor so that the tube can connect...

I want to assume that this testing proved the blower motor to be good and that I might need to look at some other component for the problem..somewhere I get a thought that there could be a problem with the AC clutch on the engine but not sure where that idea comes from.

Any suggestions would be welcome.

What else should I test? Does the Chassis AC clutch run through this same fuse?
__________________

__________________
dave1518 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-28-2012, 01:03 PM   #2
Senior Member
 
Country Coach Owners Club
Join Date: Jan 2006
Location: Redding
Posts: 3,412
I cannot answer your chassis specific question.

On my rig, the dash AC is wired to the chassis battery and hence so is the fuse.

The furnace is wired to the house battery and hence so is the fuse.
__________________

__________________
Dean
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
deandec is offline   Reply With Quote
Old 08-30-2012, 12:32 PM   #3
Junior Member
 
Join Date: Jun 2011
Location: Coon Rapids, MN
Posts: 5
Traced out more of the wiring and talked with Winnebago Service... The only thing on the blower motor circuit is in fact the the resistor, relay and the motor. The consensus is the motor is heating up and increasing current draw
__________________
dave1518 is offline   Reply With Quote
Old 08-30-2012, 04:48 PM   #4
Senior Member
 
calhyatt's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Mar 2012
Location: Weston, Fl.
Posts: 914
Quote:
Originally Posted by dave1518 View Post
I have a 88 Winnebago Chief on a Chevrolet chassis.
The 25 amp fuse for which is labeled HEATER has started to blow.
I can replace it and it the fun will run for a period of time, and then it will blow again. My assumption was that the blower motor in the squirrel cage was simply heating up and needs to be replaced.

Dismantled what seems like the entire RV to get to where the heater motor is located. Too the assemly out ...tt has a single wire connection, and the ground was rusty so cleaned it up.. Plugged the motor back in and then turned on the Ignition to Acc and ran the motor on VENT... It ran for over hour with no problems at med-high speed...

I did notice that there seems to be a "TUBE" from the output that looks goes up to a hose that is not connected...This hose looks like it should connect to a hole on the motor so that air would blow into the motor housing but the motor is 180 from that spot. I have not checked to see if I could rotate the motor so that the tube can connect...

I want to assume that this testing proved the blower motor to be good and that I might need to look at some other component for the problem..somewhere I get a thought that there could be a problem with the AC clutch on the engine but not sure where that idea comes from.

Any suggestions would be welcome.

What else should I test? Does the Chassis AC clutch run through this same fuse?
Blower motor is shot and should be replaced. Old motors with bronze sleeve sealed bearings wear out and draw too many amps. Change out the motor and that should cure your problem. Blowing a 25 amp fuse is no joke. Luckily the circuit is fused. Take care and Seeya on the road.
__________________
2003 Newmar Kountry Star 3905, Freightliner XC chassis with CAT 330. Winnie the black lab, pretty Airbus captain wife, retired airline pilot with 11 grandkids. UH-1 pilot (Huey) U.S. Army 1967-1983. RVN 68-69. Northern Idaho my summer home.
calhyatt is offline   Reply With Quote
Reply

Tags
dash, winnebago



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:08 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.