I'm not sure what you mean. A drain pan protects the area below the water heater from ruin if the water heater begins to leak. You can prevent major damage by putting a water alarm ($12) in the pan to be warned if the heater begins to leak.
Drain line is clogged.
The condensation received and goes down the drain pipe enters a pan where over time it evaporates as the water is a trickle and does not over load the pan in most cases
Water pan is not something that I am familiar with, but if you are getting water on the floor on the passenger side then your heater core may be leaking, the drain tube for the ac is blocked ( it sticks out through the firewall on the passenger side and can be cleaned out with a coat hanger or compressed air).
You have to remove the pan to drain the transmission.You have to remove the pan to drain the transmission.
What kind of drain, oil or water? The oil drain plug is at the rear and at the bottom of the oil pan.
Disconnect drain line and put on a hose and let it drain into a 5 gallon bucket. Double check drain pan for a hole that might have rusted through. You can temporarily plug drain hole and fill pan with water (like from a pitcher) to find leak. Should hold 1/2" to 1" of water. You can repair hole with JB Weld 2 part epoxy for BOATS.
drain is clogged. or there a hole in drain pan.
You remove the pan on the bottom to drain.You remove the pan on the bottom to drain.
Only the evaporator (indoor) coil collects water from the air called condensate. That is the only water in the system. If you have a water leak, the collection pan or drain has failed. Most systems have a secondary safety pan and drain system also.
The oil pan drain plug is located on the oil pan.
The engine oil drain plug is on the bottom rear of the engine oil pan. The transmission does not have a drain plug, you remove the pan to drain.The engine oil drain plug is on the bottom rear of the engine oil pan. The transmission does not have a drain plug, you remove the pan to drain.
Disconnect the negative battery cable using a ratchet and socket. Then, drain about half of the coolant from the radiator by placing a drain pan beneath the radiator's drain plug and removing the plug with a ratchet and socket. Label the two heater core hoses with painter's tape on top of the engine near the left side and then remove them with a flat-head screwdriver. Climb in the cab and open the glove box. Remove the black cable on the left side of the glove box by pushing the release pin with your fingers. Then, pull the glove box out with your hands. Unbolt the plenum chamber cover to the right of where the glove box was using a ratchet and socket. Place shop towels on the floor beneath the dash to protect the floor from leaks. Remove the heater core with your hands and allow coolant from the heater core to drain into the coolant drain pan. Install the new heater core. Perform the disassembly steps in reverse to complete the installation.