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How to Install a Radiator on a 1965 Chevy Blazer K5

The Chevy Blazer K5 was the smallest full-sized Blazer and it was introduced to the market in 1965. The radiator in the Blazer K5 is easy to install because this Blazer has few engine accessories that will get in the way while you're working. If you've punctured the radiator and you need to install a new one or you need to remove it and reinstall it for other maintenance, you should find the process relatively straightforward.

Tools Used: Drain pan, Pliers, Socket set, Funnel

Install a Radiator

Place a drain pan under the lower radiator hose and squeeze the compression tabs on the radiator clamp together. Pull the hose off the radiator. The coolant will drain from the radiator outlet. You can use the petcock to drain the coolant before taking off the radiator hose but in general, due to the age of the vehicle you risk damaging the petcock if you use it.

Squeeze the compression tanks on the upper radiator hose clamp with pliers and pull the hose off the radiator.

Locate the radiator expansion tank hose located on the left side of the radiator. Squeeze the tabs on the hose clamp and pull the hose off the radiator.

Remove the four bolts that secure the radiator fan shroud to the backside of the radiator with a socket.

Remove the four bolts that secure the radiator to the radiator supports and then pull the radiator out of the Blazer's engine bay.

Slide the new radiator into the engine bay between the radiator supports and the radiator fan shroud. Secure the radiator to the radiator support with the bolts and socket.

Secure the fan shroud to the back of the radiator using the bolts and socket. Put the upper, lower and expansion tank hoses onto the radiator and secure them with the clamps.

Place a funnel into the filler spout located on top of the radiator and fill the radiator with coolant previously drained from the old radiator.

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