how to remove lower radiator hose
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Seasoned Member
Joined: May 2011
Posts: 311
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From: Placentia, CA
Year: 1999
Model: Cherokee
Engine: 4.0 L
so I'm trying to drain my coolant and I'm a dummy when it comes to stuff under the hood. which hose is the lower radiator hose and how do i remove it so i can drain/flush my coolant out? any help or pics would be greatly appreciated.
Member
Joined: Jan 2012
Posts: 210
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
Hey now, there're no dummies in this place! 
I just flushed my system and I never bothered about the lower hose. On my -90 XJ, there's a screw to the lower left on the radiator which is the drain plug.
I took off the grill, unscrewed it and voila, dirty coolant coming out!
Then I just kept adding water into the reservoir til it came out fresh at the radiator. Ta daa!
But, I'm a novice, so I know there're guys in here that knows better and wouldn't be satisfied with my job
Try search as well!

I just flushed my system and I never bothered about the lower hose. On my -90 XJ, there's a screw to the lower left on the radiator which is the drain plug.
I took off the grill, unscrewed it and voila, dirty coolant coming out!
Then I just kept adding water into the reservoir til it came out fresh at the radiator. Ta daa!
But, I'm a novice, so I know there're guys in here that knows better and wouldn't be satisfied with my job

Try search as well!
CF Veteran
Joined: Sep 2011
Posts: 4,172
Likes: 4
From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Since when? LOL
Anyways, All you need to do is get some pliers and get a hold of the hose clamp and squeeze it. Slide it up the hose. Then grab the hose and give it a twist it should come off.
You can do like seww said. But the only problem is that the petcock are pretty weak and a lot of time they will crack and cause a leak.
Hope this helps out some.
Anyways, All you need to do is get some pliers and get a hold of the hose clamp and squeeze it. Slide it up the hose. Then grab the hose and give it a twist it should come off.
You can do like seww said. But the only problem is that the petcock are pretty weak and a lot of time they will crack and cause a leak.
Hope this helps out some.
CF Veteran
Joined: Sep 2011
Posts: 4,172
Likes: 4
From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
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Thread Starter
Seasoned Member
Joined: May 2011
Posts: 311
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From: Placentia, CA
Year: 1999
Model: Cherokee
Engine: 4.0 L
so being the self proclaimed dummy under the hood that i am...
what is the water pump and heater core? i'm smart enough to figure out what the air box is... is it that fat *** hose like 3"ish diameter?
what is the water pump and heater core? i'm smart enough to figure out what the air box is... is it that fat *** hose like 3"ish diameter?
Junior Member
Joined: May 2008
Posts: 15,016
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From: +34° 25' 35.67", -81° 21' 12.04"
Year: 1993
Engine: 4.0
Yes, the lower radiator hose is the LARGE hose that is visible from under the Jeep.
The water pump is the part that is bolts to the block directly behing the large pulley in the center front of the block.
The heater core is not visible but is mounted in the dash inside the Jeep. The two smaller hoses that run in to the firewall go to the heater core.
The water pump is the part that is bolts to the block directly behing the large pulley in the center front of the block.
The heater core is not visible but is mounted in the dash inside the Jeep. The two smaller hoses that run in to the firewall go to the heater core.
Last edited by Lowrange2; Sep 19, 2012 at 03:10 PM.
Junior Member
Joined: May 2008
Posts: 15,016
Likes: 11
From: +34° 25' 35.67", -81° 21' 12.04"
Year: 1993
Engine: 4.0

The grey funny shaped thing below the gold shiney thing that has a metal line running to it is the water pump. .
Last edited by Lowrange2; Sep 19, 2012 at 03:01 PM.
Junior Member
Joined: May 2008
Posts: 15,016
Likes: 11
From: +34° 25' 35.67", -81° 21' 12.04"
Year: 1993
Engine: 4.0
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