I recently replaced a leaking heater core on my.

The connectors are supposed to self lock when you push it in. Push the connector in as far as you can and gently pry the locking tab outwards with a screwdriver. Ensure the O'ring is not too dry. A little lubricant such as rubber greae would help.

The clips should be on the heater core.
The tips of the tube are expanded and you would not be able to fit in if the clips are inserted into the hoses first.

Install clip onto heater core.
O'ring should be inside the hose fitting.
Plug hose onto the heater core pipe and push as far as it can go.
Pry the clip outwards to get it to lock.
Pull at hose to endure it is locked and does not diengage.
The fitting would seem a litle loose and when you push the hose, it would move slightly inwards but that is ok. It should not disengage when you pull at it.

Sorry, about this.

The O'ring should be on the heater pipe after the clip is installed.

You're welcome.

Keep us posted.

JUST ANOTHER OPTION

THESE CRAP ADAPTERS YOU SPEAK OF, ARE ALSO MADE OF POT METALWON'T BE LONG, IT'LL GO TO "POT"YOU'LL HAVE TO THEN REMOVE THE CRUMBLING PART (MAYBE IT WON'T BREAK OFF IN THE HOLE!)

LET'S GO BACK TO THE GOOD OLE DAYS WITH YOUR HOSES----THIS IS THE TICKET!

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_heater-hose-connectors--5-8-inch-hose-x-3-8-inch-npt-x-2-3-4-inch-long-nipple-dorman--help_5014077-p?searchTerm=3%2F4+mipt+x+5%2F8+hose+adapters

MY EXAMPLE ABOVE MAY NOT BE THE SIZE YOU NEED.....BUT THEY DO MAKE 'EM IN ALMOST ANY CONFIGURATION...EVEN 45s AND 90s IF THAT MAKES IT ANY EZier TO GET TO!

SIMPLY SCREW OUT THE "CRAP", SOME YOUNG ENGINEER CAME UP WITH, ON BOTH ENDS OF THE HOSE

USE SOME ANTI-SEIZE OR PIPE DOPE ON THE REPLACEMENT PART'S THREADS AND SCREW 'EM IN TIGHT

NOW----NO MATTER WHERE YOU ARE---YOU CAN FIND REGULAR OLE HEATER HOSE TO FIX A FUTURE PROBLEM!

MO MORE EXPENSIVE HOSE "ROYALTIES" HELPING SOME YOUNG ENGINEER MAKE HIS EXUBERANT HOUSE AND CAR PAYMENTS

ALL YOU NEED FROM HERE ON OUT IS "HOSE" AND "HOSE CLAMPS"

GOSH, I CAN TAKE YOU BACK TO YESTERYEAR, WITH JUST A FEW LINES..........BACK WHEN HOSE REPLACEMENT WAS FAST AND CHEAP!

THE MEDIC