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Unread 03-19-2014, 05:56 PM   #1
antcg
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1998 XJ Cherokee 
 
Join Date: Jan 2014
Location: Birmingham, Alabama
Posts: 72
Radiator Replacement

Hello All

I am going to be changing out my radiator, hoses, t-stat, fan clutch. I know how to replace all of it however I have seen alot of debate on how to refill the lost coolant. And just out of curiosity whats the best way to get the A/T lines off without damaging them?

Do I absolutely have to burp the system? Or can I just refill the rad and crank the jeep and keep pouring it in until it cant take anymore and then just fill the reservoir and then let the air escape through the cap once the air builds up right there? And how much coolant am I going to need? I bought 2 gallons of prediluted Adv. Auto green stuff. I am going on an 88 mile trip right after doing the rad so I'd like to know that I did this correctly and then maybe have some extra coolant in the event it gets low some how.

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Unread 03-19-2014, 07:09 PM   #2
94TwoDoor
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1994 XJ Cherokee 
 
Join Date: Feb 2012
Location: East Lyme, CT
Posts: 65
Fill at the radiator, fill the overflow tank to the fill line, run it for 10-15 minutes (watch temp), and then shut it down, let it settle, and check the level in the overflow tank. I usually don't have much air come out. Since you're changing so many components at once, be careful and keep an eye on temperature and fan operation, put a hand on the upper rad hose to see if it gets warm to prove the thermostat is opening.

Dry capacity is about 3 gallons of coolant, I never seem to get it all to drain from the block so 2 might be enough.

With the trans lines, a pipe-style box wrench would be handy, but I've always made do with an open end, just move them out of the way for clearance and try to get them up high so they don't leak too much out. They'll leak anyway.
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Unread 03-19-2014, 07:20 PM   #3
landude
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1999 XJ Cherokee 
 
Join Date: Jan 2009
Location: Pennsylvania
Posts: 102
Doesn't the lower trans line have that stupid *** clip connect?
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Unread 03-19-2014, 09:21 PM   #4
Paradise XJ
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1990 XJ Cherokee 
 
Join Date: Jan 2007
Location: Paradise, CA, Northern California
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Quote:
Originally Posted by antcg View Post
... out of curiosity whats the best way to get the A/T lines off without damaging them?

Do I absolutely have to burp the system? .
The best way to remove the tranny cooler disconnect clips is with the tool available at an auto parts store for disconnects. The tool is cheap, or even loan-able. Doesn't use a wrench....don't use a wrench.

No you absolutely don't need to *burp* an open cooling system. It's open to the air with a pressure valve (the cap) to the overflow tank and burps itself during normal operation in four or five drive cycles. Do keep an eye on the overflow tank and top off as necessary for the first day or two of driving.

Spec for coolant is 12 qts. of 50/50 coolant and distilled water mix, including the overflow at mid line. I usually end with a quart of coolant left over.
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Unread 03-19-2014, 11:00 PM   #5
antcg
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1998 XJ Cherokee 
 
Join Date: Jan 2014
Location: Birmingham, Alabama
Posts: 72
Quote:
Originally Posted by 94TwoDoor View Post
Dry capacity is about 3 gallons of coolant, I never seem to get it all to drain from the block so 2 might be enough.
Well my water pump is already new so that will not be coming off. Just what's in the radiator upper and lower hose and tstat housing. I may just go and buy me another gallon of coolant just to be on the safe side.
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Unread 03-19-2014, 11:13 PM   #6
xj2k1
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2001 XJ Cherokee 
 
Join Date: Aug 2008
Location: arizona
Posts: 185
I would recommend getting the "rebuild" kits for the tranny discos. They're real cheap, maybe 5 bucks each from Jeep. A plastic clip and an o-ring. I had my '01 worked on once. They had to remove the cooling lines, and then replaced them without the rebuild kits. The next day, they blew out. I must have dumped a gallon of trans fluid just backing out of my parking space. The shop put in the rebuild kits and I never had another problem.
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Unread 03-24-2014, 08:23 AM   #7
antcg
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1998 XJ Cherokee 
 
Join Date: Jan 2014
Location: Birmingham, Alabama
Posts: 72
Okay well I got the radiator changed out. I'm using a 1 row all aluminum radiator by silla and its working well. I also got a new fan clutch and fan shroud and it no longer overheard sitting in traffic. It never even reaches 220. The bottom trans cooler lin I ended up cutting and using a hose clamp to keep it on the radiator.
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Unread 03-24-2014, 11:37 AM   #8
antcg
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1998 XJ Cherokee 
 
Join Date: Jan 2014
Location: Birmingham, Alabama
Posts: 72
Okay well I got the radiator changed out. I'm using a 1 row all aluminum radiator by silla and its working well. I also got a new fan clutch and fan shroud and it no longer overheard sitting in traffic. It never even reaches 220. The bottom trans cooler lin I ended up cutting and using a hose clamp to keep it on the radiator.
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coolant , coolant flow , radiator

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