Question about Ford E-250
I need to replace my heater core on a 1998 ford E259
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: heater core replacement
It's one of the easiest cores to replace that I have encountered. Disconnect heater hoses at firewall. Probably doesn't matter about hose placement, but I always mark them just in case. To remove the fiber cover under dash, take a flat blade screwdriver and pry out the center pin of the expansion clips that hold it in place. There are four 5/16 head screws that hold the bottom/drain tray cover. Core will pull through the firewall and then down. You may have to silicone/glue or replace the foam seal strips on the new core. Before you install the core, check the distance between the inlet and outlet tubes to ensure they match the openings in the firewall. This saves time. It helps if you have someone on the outside to guide you when stabbing the tubes through the firewall. Replace bottom cover. You may have to hold one of the tubes when reinstalling the first hose to the core. Replace any lost coolant and check for leaks prior to reinstalling the fiber cover. If the cover seal is in good condition, any leak should drain through the firewall, otherwise it may leak inside cab. .
Posted on Sep 10, 2008
i too replaced the heater core on my 1988 ford cv. the important point to rember is not to get overwhelmed. i ended up removing the whole dash, but not the stearingwheel. lable everything you remove....best to keep all parts seperated. mine looked like a nascar when i finaly got to the black plastic box where the core lives. i had to also remove some of the heating duct. once you open the box up, youll see the core. just sits in there. remove in and out hoses. very simple, but alot of work, thats why you must keep track of everything you remove. your engine coolant may be low, so add more when compleated. its been about 4 years now since i replaced mine.....i dont rember if the black box was rivited togeather or screwed togeather. if rivited, get a dremel tool with a grinder wheel, this will remove the rivites in good time. but the duct work was stapled togeather, i used 1/4 inch sheet metal screws to hook back up, works just fine.
Posted on Feb 17, 2009
allow the system to cool down
take radiator cap loose to release pressure
once pressure is released tighten cap
loosen clamps on the heater hoses in the engine compartment on the pass. side of firewall.
plug or cap off the heater core tubes to prevent spillage when you pull it into the truck
place a trash bag on floorboard in case spillage occurs
remove the five screws holding the heatre core access cover, three on top and two on bottom
carefully pull heater core back and down and remove it from the dash
install is reverse
Hope this helps
Posted on Mar 29, 2009
Removal & Installation
Exploded view of the blower motor housing and the heater air plenum assemblies
Posted on Oct 18, 2009
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