GM Firebird 1982-1992 Repair Guide

Water Pump

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REMOVAL & INSTALLATION




CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

2.5L Engine

See Figure 1



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Fig. Fig. 1: Water pump-2.5L

  1. Drain the cooling system.
  2.  
  3. Remove the accessory drive belts.
  4.  
  5. Remove the fan and pump pulley.
  6.  
  7. Remove the heater hose and lower radiator hose from the water pump.
  8.  
  9. Remove the pump from the block.
  10.  

To install:
  1. Coat the new gasket with RTV sealer. Install the pump and torque bolts to 25 ft lbs. (34 Nm).
  2.  
  3. Install the hose and lower radiator hose to the water pump.
  4.  
  5. Install the pump pulley and fan.
  6.  
  7. Install the accessory drive belts.
  8.  
  9. Fill the cooling system, start the engine and check for leaks.
  10.  

V6 Engines, Except 3.8L Turbo

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the air intake duct and air cleaner, if necessary.
  6.  
  7. Remove the drive belt.
  8.  
  9. Disconnect the heater and radiator hoses from the water pump.
  10.  
  11. Remove the power steering pump bracket and swing aside.
  12.  
  13. Remove the water pump bolts. Mark the bolts to their corresponding locations for proper installation.
  14.  

To install:
  1. Clean the gasket surface.
  2.  
  3. Install the water pump with a new gasket. Apply sealer to the bolt threads.
  4.  
  5. Tighten the large bolts to 25 ft lbs. (34 Nm), medium bolts to 15 ft lbs. (21 Nm) and the small bolts to 88 inch lbs. (10 Nm).
  6.  
  7. Install the power steering pump bracket.
  8.  
  9. Connect the heater and radiator hoses.
  10.  
  11. Install the drive belt.
  12.  
  13. Install the air cleaner and duct.
  14.  
  15. Fill the cooling system. Start the engine and check for leaks.
  16.  

3.8L Turbo

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the air intake duct.
  4.  
  5. Drain the cooling system.
  6.  
  7. Remove the drive belt and the water pump pulley.
  8.  
  9. Disconnect the heater and radiator hoses from the water pump.
  10.  
  11. Remove the water pump attaching bolts, then remove the pump. Mark the bolts to their corresponding locations for proper installation.
  12.  

To install:
  1. Clean the gasket mating surfaces.
  2.  
  3. Install the water pump with a new gasket.
  4.  
  5. Install the coolant pump and bolts to the front cover using the dowel pins as a guide.
  6.  
  7. Tighten the large and medium bolts to 22 ft lbs. (30 Nm). Tighten the small bolts to 115 inch lbs. (13 Nm).
  8.  
  9. Connect the heater and radiator hoses to the water pump.
  10.  
  11. Install the water pump pulley and the drive belt.
  12.  
  13. Fill the cooling system. Start the engine and check for leaks.
  14.  

V8 Engines

See Figures 2, 3, 4 and 5



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Fig. Fig. 2: Removing the heater hoses



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Fig. Fig. 3: Removing the attaching bolts



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Fig. Fig. 4: Removing the water pump from the engine



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Fig. Fig. 5: Scraping off the old gasket material

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the air intake duct and air cleaner, if necessary.
  6.  
  7. Remove the drive belt(s) and the water pump pulley.
  8.  
  9. Disconnect the heater and radiator hoses from the water pump.
  10.  
  11. Remove the water pump attaching bolts, then remove the pump. Mark the bolts to their corresponding locations for proper installation.
  12.  

To install:
  1. Clean the gasket mating surfaces.
  2.  
  3. Install the water pump with a new gasket.
  4.  
  5. Install the coolant pump and bolts to the front cover using the dowel pins as a guide.
  6.  
  7. Tighten the bolts to 30 ft lbs. (41 Nm).
  8.  
  9. Connect the heater and radiator hoses to the water pump.
  10.  
  11. Install the water pump pulley and the drive belt(s).
  12.  
  13. Fill the cooling system. Start the engine and check for leaks.
  14.  

 
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