WHAT KIND OF CAR OR TRUCK IS IT ?
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The heater matrix, in a Peugeot 206, can be replaced by removing the heater core and the hoses. With the heater core removed you can replace it with a new heater core.
The heater core, in a Saturn and 1200, is held in place by four bolts and two water hoses. Remove the bolts and the water hoses. The heater core will come out. Reverse the process to install the new heater core.
The heater hoses connect the block, radiator, heater core, and waterpump. To replace, drain the radiator and catch the anti-freeze for recycling. Remove the hoses and put on new hoses. It is kind of nasty but not very difficult.
Best to get the shop manual but basically: Reomove Heater hoses from engine block and drain. Remove glove box. Disconnect cables that connect to heater core. Disconnect heater core from firewall. Disconnect hoses from heater core. Pull heater core from under dash.
Begin by removing the water supply hoses to your heater core. Remove the heater core retaining bolts. The heater core will come out. Reverse the process to install the new heater core.
1- Drain coolant. 2- remove heater hoses from core inlet and outlet pipes in engine compartment. 3-remove screws and heater core cover. ( right side lower passenger compartment ) 4- carefully lower core out of heater unit. This old of a truck it would be wise to replace both heater hoses. Use antifreeze as a lubricant to install heater hoses to new core inlets.
Drain the cooling system. Remove the water hoses from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
Remove the heater core water supply hoses from your 1979 Chevy Corvette. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
Remove the water supply hoses to your 1998 Chevy Lumina heater core. Remove the heater core retaining bolts. Reverse the procedure to install the new heater core.
Remove the water supply hoses from your 1985 Chevy heater core. Remove the heater core retaining bolts. The heater core will come out. Reverse the process to install your new heater core.
The heater core is located under the hood in the heater box where the blower motor is. Remove the heater hoses then the box can be unbolted and removed.
Either pull the hoses off of the heater core and flush the core out or pull the hoses off the block and flush the heater core through the hoses..............