My coolant pump spindle has snapped along the threaded shaft, I need to replace it but first I need to know how to actually remove it. How do I actually remove it from the bike?

If you search the internet for the make & model of your machine, you may be able to find thread spindle replacements. If not, perhaps you can gerryrig something using a wooden dowel, a plastic drinking straw, etc. Some sewists will use a standing spindle (can be purchased as an accessory) that sets on the table behind the machine. Or, you can put the spool in a coffee cup behind the machine and let the machine pull the thread off the spool.

sewing machine thread spool spindle Google Search

Sewing Machine Thread Holder eBay


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By loose blade I assume you mean that it can be moved up and down at the tip of the blade. It is most unlikely that the central nut has come loose, but check anyway. If this nut is tight and the shaft is loose in the bearing this means the bearing has worn out. Remove the deck from the machine. Photograph the run of the belt as this has to be removed. Also the direction of the grease nipple. Remove pulley from loose spindle. Turn deck on its edge or mount on two saw horses or similar so you can get to top and bottom of spindle bolts. Remove cutting blade. Remove spindle housing and clean area so no rubbish gets caught when reassembling. Otherwise spindle may be set different and mower will leave a line of differing cut. Take spindle to vise and remove any retaining nuts or circlips from shaft and clean as clean as new. Apply light oil or CRC etc to help move bearing along shaft. Open vise wider that outside of bearing, usually 44 to 50mm [1 3/4" to 2"] and refit nut on thread. Check nut is always spaced free of top bearing. With cushion of hardwood or nylon tap the shaft to move it down with lower bearing coming out of spindle housing. To remove top bearing from housing, turn housing up other way and use a wooden shaft such as a broom handle to tap bearing free of housing. Clean out grease and replace when reassembling. Do not reuse other bearing. They are cheap and likely to fail shortly anyway. These bearings usually have no seals on inside.

To replace spindle bearings: Remove deck and either rest on two saw horses or similar mounts, or stand on its side and fix to make safe and secure. Photograph the belt layout and also the grease nipple so you can easily refit.The object is to access the top and bottom of the spindle. Remove cutting blade. Remove pulley on top side. I reccomend that you also remove the spindle housing from the deck. You can remove bearings while still fitted but it is not so easy. Clean the shaft and remove any circlips or retaining nuts from spindle. Take the unit and clean shaft as clean as new. Use emery paper if necessary. Use light oil or CRC to lube the shaft to slide bearings off. Do not hold shaft in vise as this will cause deformation of the shaft surface and jam the bearing. Place lower side of housing on vise which should be open slightly more than bearing outer diameter. Take hardwood or industrial nylon [to protect the thread from bruising,] after refitting nut on shaft thread, and ensuring there is space between nut and bearing, tap down firmly with hammer. The shaft will move more easily after the initial freeing up. When it moves easily remove nut and tap down with wood between hammer and thread end. To remove the top bearing use a wooden shaft, a broom handle is ideal. The replacement bearings should have no seals on the inside. Remove if necessary. Make sure to scrub clean both housing end and deck where the housing fits. Any rubbish there will cause lines in the mowing as it can tilt the blades. The thickness of paper can mean 3mm at the end of the blades!

I believe you have to remove the spindle housing then remove the snap ring, ( you may need to clean and scrape to locate the snap ring) from the inside of housing. Now you should be able to press the shaft from the housing. Or if necessary support housing with blocks so as to drive the shaft from the housing. I would spin the nut on the shaft, then place a piece of hardwood on the shaft and drive it out with a three pound sledge. There may be a snap ring for the shaft and one for the bearings. There may not be one for the shaft as it bolts to the pulley. At any rate this should accomplish you goal. There is usually a snap ring that retains the bearings, if this is what you need to replace.

Top thread snapping. Do you have an idea of there it is breaking?

First I would check the needle throat plate and needle. If you have stab marks on your needle plate, examine it closely for a crack. (get out the magnifying glass or jewelers loop) I recently fixed a problem I had with an old singer that kept breaking the top thread by replacing the needle plate. The old needle plate was so damaged it had actually made a knife edge which consistently cut the thread right at that location.

Change your needle and make sure it is the proper size for your thread. Too narrow of an eye can shred the thread causing it to break.

Next, check anything along your threading process that could be catching or snagging the thread. A worn or chipped thread guide can be a real problem.

Also make sure your thread hasn't dropped down below your thread cones and wrapped around the thread spindle. This would cause extra tension that might not be readily apparent.

Good luck

Coolant leaking from the "weep" hole indicates that the seals are out on the water pump. That's actually what the hole is for, to monitor the condition of the water pump seals. Pretty simple fix with the factory repair manual. Replace the impeller shaft and bearings along with the seals while your in there. Good luck!

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 impeller is screwed on to the motor shaft; to remove it you need to hold the motor shaft at the fan end so that you can unscrew the impeller - normal right hand thread. Holding the shaft can sometimes be quite difficult so a good suggestion would be to remove the fan cowl along with the fan, this will enable you to secure the shaft with a small pipe wrench or similar. Once you have the impeller removed it will be possible to ascertain what steps need to be taken next - you may need a new shaft sleeve as well as a new mechanical seal assembly.
Good luck,
Mike G

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.

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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 Cooling System-Draining and Filling.
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. If water pump is being replaced, do not unbolt fan blade assembly from thermal viscous
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. Remove four water pump pulley-to-water pump hub bolts and remove pulley from vehicle.

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