The pulley, attached 2 the auxiliary fan and water pump, is moving.......coolant running right out, from the back of that pulley! 95 JGC is running hot! Water pump??

no DTC code told by you at all, we can not guess 100s of codes.
take the car back to the CHAIN shop, man.
tell him to fix it.
or learn to use a scan tool and report all DTCs.
he may have left connectors OFF or loose or damaged them.
let him look first for his errors. so he learns to do better.
overheating any engine can wreck it, even warp heads.
do not let that happen or let it cool down ,pronto and get it service faster. look for loose belts. or missing belts he did wrong.
coolant aux P2600 error or 260x
must never be ignored this error, .
and can be a fuse blown only.....!!!!

quote

The ECM commands the auxiliary cooling fan ON when the engine coolant temperature exceeds approximately 108°C (226°F).
and
The auxiliary coolant pump and cooling fan system provides a measure of prevention against fuel vaporization due to excessive engine temperatures. The engine control module (ECM) commands the auxiliary or after boil coolant pump ON when the engine coolant temperature exceeds a calibrated value after engine shut down. The ECM applies ground to the coil side of the auxiliary pump relay. This energizes the coil and applies voltage directly to the pump motor through the switch side of the relay. When the auxiliary coolant pump is activated, coolant is drawn from radiator and pumped into the engine through a tee in the engine coolant inlet pipe. As the colder temperature coolant is drawn into the engine warmer coolant is expelled from the engine and back to the radiator. Removing high temperature coolant from the engine after shut down helps prevent vaporization of the fuel that remains in the fuel injectors and fuel rail during a hot soak.

This is for the 3.9 v6 you did not specify motor size.
Hope this helps, it it does please leave feedback Thank You and Good Luck


The water pump can be removed and installed without discharging the air conditioning system (if equipped).

1. Disconnect battery negative cable.
2. Drain cooling system.
3. Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse.

WARNING: CONSTANT TENSION HOSE CLAMPS ARE USED ON MOST COOLING SYSTEM HOSES. WHEN REMOVING OR INSTALLING, USE ONLY TOOLS DESIGNED FOR SERVICING THIS TYPE OF CLAMP, SUCH AS SPECIAL CLAMP TOOL (NUMBER 6094). SNAP-ON CLAMP TOOL (NUMBER HPC-20) MAY BE USED FOR LARGER CLAMPS. ALWAYS WEAR SAFETY GLASSES WHEN SERVICING CONSTANT TENSION CLAMPS.

CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment clamp with matching number or letter.

1. Remove upper radiator hose clamp and hose at radiator.

Fan Blade And Viscous Fan Drive-3.9L/5.2L/5.9L Engines

1. The thermal viscous fan drive is attached (threaded) to the water pump hub shaft. Remove fan/viscous fan drive assembly from water pump by turning mounting nut counterclockwise as viewed from front. Threads on viscous fan drive are RIGHT HAND. A Snap-On 36 MM Fan Wrench (number SP346 from Snap-On Cummins Diesel Tool Set number 2017DSP) can be used. Place a bar or screwdriver between water pump pulley bolts to prevent pulley from rotating. Do not attempt to remove fan/viscous fan drive assembly from vehicle at this time.
2. If water pump is being replaced, do not unbolt fan blade assembly from thermal viscous fan drive.
3. Remove fan shroud attaching hardware (two bolts at bottom-two clips at top).
4. Remove fan shroud and fan blade/viscous fan drive assembly from vehicle as a complete unit.
5. After removing fan blade/viscous fan drive assembly, do not place thermal viscous fan drive in horizontal position. If stored horizontally, silicone fluid in viscous fan drive could drain into its bearing assembly and contaminate lubricant.
6. Do not remove water pump pulley bolts at this time.

Automatic Belt Tensioner Assembly-3.9L/5.2L/5.9L Engines

1. Remove accessory drive belt as follows: The drive belt is equipped with a spring loaded automatic tensioner. Relax tension from belt by rotating tensioner clockwise (as viewed from front). When all belt tension has been relaxed, remove accessory drive belt.
2. Remove four water pump pulley-to-water pump hub bolts and remove pulley from vehicle.
3. Remove lower radiator hose clamp and remove lower hose at water pump.
4. Remove heater hose clamp and heater hose from heater hose coolant return tube.

Coolant Return Tube-3.9L/5.2L/5.9L Engines-Typical

1. Loosen heater hose coolant return tube mounting bolt and remove tube from water pump. Discard the old tube O-ring.

Water Pump Bolts-3.9L/5.2L/5.9L Engines

1. Remove seven water pump mounting bolts.
2. Loosen clamp at water pump end of bypass hose. Slip bypass hose from water pump while removing pump from vehicle. Discard old gasket.

CAUTION: Do not pry water pump at timing chain case/cover. The machined surfaces may be damaged resulting in leaks.


Belt Routing-3.9L/5.2L/5.9L Engines

The water pump is usually mounted center, Front of the engine and is run by a belt. Look for the location the water lines connect to that has a pulley attached.

Water Pump - REMOVAL & INSTALLATION
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.
3.4L ENGINE
(see Figures 1 and 2)

1. Disconnect the negative battery cable.
2. Drain the cooling system into a suitable container.
3. Remove the air intake duct.
4. Remove the top coil of the ignition coil pack.
5. Loosen the tensioner pulley bolt/screw.
6. Disconnect the heater hose from the water pump.
7. Loosen the water pump pulley bolts/screws.
8. Unfasten the power steering bracket bolts/screws.
9. Remove the serpentine drive belt.
10. Remove the water pump pulley.
11. Remove the power steering pump bracket and swing the bracket and pump aside. Do NOT disconnect the power steering lines from the pump.
12. Unfasten the water pump and engine front cover bolts/screws, then remove the water pump assembly from the vehicle.
13. Remove and discard the gasket and thoroughly clean the gasket mating surfaces.

Fig. 1: Exploded view of the water pump mounting - 3.4L engine

To install:

1. Position a new water pump gasket, then install the pump. Secure using all of the water pump retaining bolts/screws, except the bottom three, and tighten to 33 ft. lbs. (45 Nm).
2. Install the engine front cover bolts/screws and tighten to 16 ft. lbs. (21 Nm) for 1993-94 vehicles, or to 97 inch lbs. (11 Nm) for 1995 vehicles.

Fig. 2: Water pump retaining bolt tightening sequence

1. Install the three bottom water pump retaining screws and tighten to 89 inch lbs. (10 Nm).
2. Place the power steering pump into position and install the pump bracket.
3. Install the water pump pulley.
4. Install the serpentine drive belt.
5. Install the power steering pump bracket retaining bolts and tighten to 30 ft. lbs. (40 Nm).
6. Connect the heater hose to the water pump.
7. Install the top coil to the ignition coil pack.
8. Attach the electrical connector to the alternator.
9. Install the air inlet duct and air cleaner assembly.
10. Connect the negative battery cable.
11. Fill the cooling system. Start the engine and check for leaks.

3.8L Engine

1. Disconnect the negative battery cable.
2. Drain the cooling system into a suitable container.
3. Remove the serpentine belt.
4. Disconnect the radiator inlet hose from the water pump.
5. Unfasten the water pump pulley bolts/screws and remove the pulley.
6. Remove the water pump pulley retaining bolts, then remove the pump from the vehicle.
7. Remove and discard the gasket and thoroughly clean the gasket mating surfaces

To install:

1. Position a new water pump gasket, then install the pump. Secure using the water pump retaining bolts/screws and tighten to 11 ft. lbs. (15 Nm), plus an additional 80 degree rotation.
2. Install the water pump pulley and retaining bolts. Tighten to 115 inch lbs. (13 Nm).
3. Install the serpentine drive belt.
4. Connect the radiator inlet hose to the water pump.
5. Connect the negative battery cable.
6. Fill the cooling system. Start the engine and check for leaks.

5.7L ENGINE

1. Unplug the electrical connector from the cooling fan.
2. For 1993-95 vehicles, remove the right side cooling fan.
3. For 1996-98 vehicles, remove both cooling fan assemblies.
4. Place a suitable drain pan under the vehicle, then remove the block coolant drain plug and the knock sensor. Drain the radiator.
5. Install the drain plug and knock sensor.
6. Remove the air intake duct and air cleaner.
7. Disconnect the upper and lower radiator hoses from the water pump.
8. Remove the heater hoses from the water pump and throttle body.
9. Unplug the electrical connector from the coolant sensor.

1. Unfasten the retainers and reposition the ignition coil and bracket.
2. If equipped, remove the air pump and bracket.
3. Unfasten the water pump attaching bolts, then remove the water pump and discard the gasket. Remove the shaft coupling and water pump driveshaft seals, if necessary.

1. Thoroughly clean the gasket mating surfaces

To install:

1. If removed, install the shaft coupling and water pump driveshaft using J 39089 or equivalent water pump driveshaft O-ring installer.
2. Install the water pump with a new gasket. Tighten the bolts to 30-32 ft. lbs. (41-43 Nm).
3. If equipped, install the air pump and bracket.
4. Reposition and secure the ignition coil and bracket.
5. Attach the coolant sensor connector.
6. Connect the heater hoses to the water pump and throttle body.
7. Connect the upper and lower radiator hoses to the water pump.
8. Install the air cleaner and air inlet duct.
9. Install the electric cooling fan(s), then attach the electrical connector.
10. Refill the cooling system.
11. Connect the negative battery cable, then start the engine and check for leaks.

Hope helps (remember rated this).

The water pump can be removed and installed without discharging the air conditioning system (if equipped).

1. Disconnect battery negative cable.
2. Drain cooling system. Refer to Draining and Filling found under Cooling System, Service and Repair.
3. Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse. WARNING: CONSTANT TENSION HOSE CLAMPS ARE USED ON MOST COOLING SYSTEM HOSES. WHEN REMOVING OR INSTALLING, USE ONLY TOOLS DESIGNED FOR SERVICING THIS TYPE OF CLAMP, SUCH AS SPECIAL CLAMP TOOL (NUMBER 6094). SNAP-ON CLAMP TOOL (NUMBER HPC-20) MAY BE USED FOR LARGER CLAMPS. ALWAYS WEAR SAFETY GLASSES WHEN SERVICING CONSTANT TENSION CLAMPS. CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment clamp with matching number or letter.
4. Remove upper radiator hose clamp and hose at radiator.
5. The thermal viscous fan drive is attached (threaded) to the water pump hub shaft. Remove fan/viscous fan drive assembly from water pump by turning mounting nut counterclockwise as viewed from front. Threads on viscous fan drive are RIGHT HAND. A Snap-On 36 MM Fan Wrench (number SP346 from Snap-On Cummins Diesel Tool Set number 2017DSP) can be used. Place a bar or screwdriver between water pump pulley bolts to prevent pulley from rotating. Do not attempt to remove fan/viscous fan drive assembly from vehicle at this time.
6. 6. If water pump is being replaced, do not unbolt fan blade assembly from thermal viscous fan drive.
7. Remove fan shroud attaching hardware (two bolts at bottom-two clips at top).
8. Remove fan shroud and fan blade/viscous fan drive assembly from vehicle as a complete unit.
9. After removing fan blade/viscous fan drive assembly, do not place thermal viscous fan drive in horizontal position. If stored horizontally, silicone fluid in viscous fan drive could drain into its bearing assembly and contaminate lubricant.
10. Do not remove water pump pulley bolts at this time.
11. Remove accessory drive belt as follows: The drive belt is equipped with a spring loaded automatic tensioner. Relax tension from belt by rotating tensioner clockwise (as viewed from front). When all belt tension has been relaxed, remove accessory drive belt.
12. 12. Remove four water pump pulley-to-water pump hub bolts and remove pulley from vehicle.
13. Remove lower radiator hose clamp and remove lower hose at water pump.
14. Remove heater hose clamp and heater hose from heater hose coolant return tube.
15. Loosen heater hose coolant return tube mounting bolt and remove tube from water pump. Discard the old tube O-ring.
16. Remove seven water pump mounting bolts.
17. Loosen clamp at water pump end of bypass hose. Slip bypass hose from water pump while removing pump from vehicle. Discard old gasket. CAUTION: Do not pry water pump at timing chain case/cover. The machined surfaces may be damaged resulting in leaks.

INSTALLATION

1. Clean gasket mating surfaces.
2. Using a new gasket, install water pump to engine as follows: Guide water pump nipple into bypass hose as pump is being installed. Install water pump bolts. Tighten water pump mounting bolts to 40 Nm (30 ft. lbs.) torque.
3. Position bypass hose clamp to bypass hose.
4. Spin water pump to be sure that pump impeller does not rub against timing chain case/cover.
5. Install a new O-ring to the heater hose coolant return tube. Coat the new O-ring with antifreeze before installation.
6. Install coolant return tube and its mounting bolt to engine. Be sure the slot in tube bracket is bottomed to mounting bolt. This will properly position return tube.
7. Connect radiator lower hose to water pump.
8. Connect heater hose and hose clamp to coolant return tube.
9. Install water pump pulley. Tighten bolts to 27 Nm (20 ft. lbs.) torque. Place a bar or screwdriver between water pump pulley bolts to prevent pulley from rotating.
10. Relax tension from belt tensioner. Install accessory drive belt.
11. CAUTION: When installing the serpentine accessory drive belt, the belt must be routed correctly. If not, engine may overheat due to water pump rotating in wrong direction. Refer to Illustration above for correct belt routing. The correct belt with correct length must be used.
12. Position fan shroud and fan blade/viscous fan drive assembly to vehicle as a complete unit.
13. Install fan shroud.
14. Install fan blade/viscous fan drive assembly to water pump shaft.
15. Fill cooling system.
16. Connect battery negative cable.
17. Start and warm the engine. Check for leaks.

pulley is held on by the same bolts that hold on the fan just pull the blots and the fan will come off you will howver need to pull the fan out at the same time as the fan shroud its tricky but you can do it if u are patient be careful not to drop fan or you will also be replacing the radiator lol

no the bolts on it come off and everything slides off the the water pump. fan, then pulley

Hello Sir,

Here's a step by step proceedure to remove and replace the water pump on your Cherokee.

Be advised,all 4.0L engines, some 2.8L engines and some 4.2L engines have areverse rotating water pump. You can ID these from the word REVERSE orREV imprinted or cast on the housing and/or fan. There will also be an'R' stamped into the impellor.

Make sure your replacement pump is the correct type, If not, expect some major turmoil.

The procedure:
1. Remove negative battery cable
2. Open radiator valve - drain cooling system
3. Remove cooling fan and shroud
4. Remove belts (see my tip on serpentine belts if needed)
5. Remove water pump pulley from hub
6. Remove hoses from water pump
7. Remove accessory brackets from the water pump.
When removing the P/S pump and/or AC compressor, leave the hoses attached and move them out of the way.
8. Remove the remaining bolts and detach the water pump from the engine.The bolts are three different lengths. Make note of where they camefrom.
9. Compare the new and old pumps. Make sure they match.
10. Scrape off the old gasket material.
11. Apply a thin continuous line of RTV High Temp sealant to the water pump side of the gasket.
12. Put a couple bolts through the pump to hold the gasket in place and mount the gasket.
13. Apply Another coat to the other side of the gasket.
14. Attach the pump to the engine. Screw the bolts in finger tight.
15. Attach the remaining bolts.
16. Tighten them up in 1/4 turn increments.
17. Re-attach all the stuff you removed
18. Refill the coolant, adjust belt tension.
19. Run the engine and check for leaks.

Hope this is very helpful
Mike

5.0L, 5.8L and 7.5L Engines
See Figures 1, 2, 3, 4 and 5


Fig. Fig. 1: Removing the pulley from the water pump shaft may be easier if you use belt tension to hold the pulley


Fig. Fig. 2: Loosen the clamp and remove the hoses at the water pump


Fig. Fig. 3: Unbolt the water pump from the timing chain cover


: Remove the water pump from the timing chain cover

: Make sure the gasket mating surfaces are clean and dry

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.

1. Remove the bolts securing the fan shroud to the radiator, if so equipped and position the shroud over the fan.
2. Disconnect the lower radiator hose, heater hose and by-pass hose at the water pump. Remove the drive belt(s), fan, fan spacer and pulley. Remove the fan shroud, if so equipped.
3. Loosen the alternator pivot bolt and the bolt attaching the alternator adjusting arm to the water pump. If applicable, remove the power steering pump bracket from the water pump and position it out of the way.

t may be easier to remove the pulley from the water pump shaft by using belt tension to hold the pulley prior to removal.

1. Remove the bolts securing the water pump to the timing chain cover and remove the water pump.

To install:

1. Coat a new gasket with sealer and install the water pump. Tighten the bolts to 18 ft. lbs. (24 Nm).
2. Install the power steering pump bracket.
3. Connect the lower radiator hose, heater hose and by-pass hose at the water pump.
4. Install the fan shroud, if so equipped.
5. Install the pulley, fan spacer, fan and drive belt(s).
6. Fill the cooling system.