Rear Heater Lines - Pics Needed

Rear Heater Lines - Pics Needed

Postby offroad safari [OP] » December 14th 2015, 12:15am

I'm going to attempt to reinstall the rear heat lines in my 1991 safari. I need pictures of how the lines are run under the van, in particular, the steel tubing that has the vacuum valve in it, the previous owner cut it all out and looped it back to the engine. Any help would be great.
'90 AWD Shorty Safari
4" Overland Lift + countless mods
"It's a Safari thing.... Jeep people couldn't understand"
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offroad safari
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Re: Rear Heater Lines - Pics Needed

Postby Lumpy » December 14th 2015, 12:52am

Here's one diagram I have in my files -

Image


Here's a diagram of how my 89 was setup BEFORE I deleted the rear heat and valve -

Image

In mine, hot water was ALWAYS flowing through the front coil. The only thing that turned it off was when you'd close the cabin flap door via the heat controls. The only thing the vacuum valve did was turn hot water flow on or off to the REAR.

Apparently newer versions had a more complex valve that would shut off REAR and/or FRONT. They apparently did not cause hot water to flow through the front coils all the time.

Might be worth it to explore how the newer systems are setup. Or maybe your year IS the newer system.

As far as "which metal, which rubber pipes", I don't think it would matter much if all the tubing was rubber hose instead of metal if you don't have the metal parts. Plumb it all with rubber heater hose and protect it from chafing and what not etc.


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Re: Rear Heater Lines - Pics Needed

Postby offroad safari [OP] » December 14th 2015, 2:49am

thanks for the reply. I saw those diagrams when I was searching. I was hoping for actual pictures. I am looking for the factory location for this http://www.rockauto.com/catalog/moreinfo.php?pk=815506&cc=1165171&jnid=474&jpid=4
'90 AWD Shorty Safari
4" Overland Lift + countless mods
"It's a Safari thing.... Jeep people couldn't understand"
Original Poster [OP]
offroad safari
Site Contributor
Site Contributor
Firing on 3 Cylinders (L1)
Firing on 3 Cylinders (L1)
Years of Membership: offroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full yearsoffroad safari has been a member for 11 full years
Posts: 328
Topics: 19
Joined: September 2009
Location: Bethlehem, PA
Gender: Male
Alias (AKA): Witman40
Van Make/Model: GMC Safari
Extra Info: AWD Shorty


 
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