1993 Jeep Wrangler Replace the Water Pump

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The water pump on a 1993 Jeep Wrangler makes sure the coolant circulates properly between the engine and the radiator. When the water pump fails, the coolant can't circulate, causing the engine to overheat. This overheating condition can seriously damage the engine. To fix the problem, the water pump must be removed and replaced, which will take around an hour to do.

[edit] Tools Used

Tools
Open-end wrench set
3/8-inch ratchet, extension and socket set
Drain pan
Flat-head screwdriver
Gasket scraper
Replacement water pump
Replacement water pump gasket
3/8-inch torque wrench
50-50 pre-diluted coolant

[edit] Replace the Water Pump

  • Let the Wrangler's engine cool until you can comfortably touch the top of the radiator without burning yourself. Put a drain pan beneath the petcock on the bottom of the radiator. Open the petcock by hand. Open the engine compartment, then open the radiator cap inside the engine bay. Tighten the petcock once all of the coolant has drained from the radiator.
  • Turn the belt tensioner clockwise using the 3/8-inch ratchet and socket, then pull the belt off the engine. Remove the hose on the water pump using the flat-head screwdriver.
  • Unbolt the fan from the water pump pulley with an open-end wrench. Unbolt the fan shroud from the core support with the 3/8-inch ratchet and socket. Pull the fan and the fan shroud away from the engine bay. Slide the pulley off the water pump.
  • Unbolt the power steering pump bracket from the engine, and tilt the pump and bracket away from the engine. Unbolt the water pump from the engine with the 3/8-inch ratchet, extension and sockets, then pull the pump away from the engine. Scrape off any gasket residue on the engine with the gasket scraper.
  • Install a replacement gasket onto the replacement water pump, and bolt the water pump to the engine with the 3/8-inch ratchet and socket. Torque the water pump to 22 foot-pounds using the 3/8-inch torque wrench. Reinstall the power-steering pump bracket on the engine with the 3/8-inch ratchet and socket.
  • Reinstall the water pump pulley and engine fan using an open-end wrench. Reinstall the fan shroud with the 3/8-inch ratchet and socket. Reinstall the serpentine belt using the 3/8-inch ratchet and socket.
  • Reinstall the radiator hose to the water pump using the flat-head screwdriver. Fill the radiator with 50-50 pre-diluted coolant. Reinstall the radiator cap.
  • Start the engine, and turn on the heater to its hottest and fastest setting. Run the Wrangler until the temperature gauge reaches operating temperature, then turn off the engine and let it sit until it cools. Open the radiator cap, and top off the radiator with 50-50 pre-diluted coolant.
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