Question about 1987 Ford F 250
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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
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
I have not seen this particular truck, but on all the Fords I've seen, the plenum is on the passenger side, under or near the glove box. Usually the blower motor is to the right, and the plenum toward the center of the cab. I hope this steers you in the right direction. Doesn't Haynes give you a picture? I find many after market manuals tell you everything you already know, but not what you need to know.
Posted on Oct 31, 2009
The heater core is on the passenger side of the dash.
You get everything in and out from under the dash.
Other than removing the cover you shouldn't have to remove anything else.
You should just have to remove 2-4 bolts that hold the plenum cover on, then undo the heater hose in the engine compartment, and I think two bolts along the bottom of the core and *** all drops loose.
The hard part is getting everything lined up when you put the new one back in.
Posted on Nov 01, 2009
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