Question about 1993 Nissan Pathfinder

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Water pump I need to replace the water pump on my 93 nissan pathfinder. How do I get the harmonic balance wheel off? I cant get the timing belt cover till I get that wheel off. I can't get to the water pump till I get the timing belt cover off.

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You should not have to do all that. Let me know if you dont get diagral(sometimes happens)


  1. Drain the cooling system.
CAUTION When draining the coolant, keep in mind that cats and dogs are attracted by 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. water pump - 0900c1528018cf80.jpgFig. 1: Water pump assembly-Z24i and KA24E engines Fig. 2: View of the water pump assembly-VG30E engine
  1. Remove all drive belts.
  2. Unfasten the fan shroud securing bolts and remove the fan shroud assembly.
  3. Unfasten the water pump retaining bolts (note the different size bolts on the VG30i and VG30E engines), then remove the water pump and fan assembly, using care not to damage the radiator with the fan.
If the fan is equipped with a fluid coupling, do not tip the fan/pump assembly on its side, as the fluid will run out.
To install:
  1. Remove all traces of gasket and/or sealant from the pump-to-cover mounting surfaces. Install the water pump and tighten the M6-size mounting bolts to 3-7 ft. lbs. (4-10 Nm). Tighten the M8-size bolts to 7-12 ft. lbs. (10-16 Nm) on Z24i engines, or 12-15 ft. lbs. (16-21 Nm) on KA24E, VG30i and VG30E engines. Always use a new gasket between the pump body and its mounting.
The KA24E engine uses a liquid gasket. Carefully scrape any old gasket material from the mounting surfaces, then apply a 0.079-0.118 in. (2-3mm) continuous bead of liquid gasket around the entire mounting surface.
  1. Install the fan shroud assembly.
  2. Install the drive belt and adjust the tension.
  3. Refill and bleed the cooling system (refer to ), then start the engine and check for coolant leaks.


Feel free to reply with any questions or comments

Posted on Nov 14, 2008

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The harmonic balancer (vibration damper) is inspected for signs of wear in its center bore.
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Water pump removal/installation 7924vg20.gif

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