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Before performing any repairs, perform a water test on the pump by raising and lowering the handle a full 40 strokes. A properly performing pump will yield greater than 10 liters.
Remove the hex head bolt from the top of the access door on the pump head.
On reassembly, this bolt should be hand-tight.
The following procedure requires two people. If you attempt to do this alone, you risk injuring yourself and damaging the pump.
Lift the pump handle until the base of the chain comes to rest on the spacer collar, and the chain is slack. Hold the handle in this position while the chain is being detached.
After removing the two handle side bolts, have your partner support the weight of the handle.
Remove the two remaining bolts in the same fashion.
Lift and remove the pump head from the pump.
Store the pump head in a sanitary place, preferably above ground, to prevent contamination.
Slide the rod clamp around the pump rod, and support it on the tank base.
Make sure the pegs in the base of the rod clamp fit into the appropriate holes in the top of the tank.
Unscrew the chain from the top of the pump rod.
Remove the chain.
Check the chain for signs of wear or damage.
Set the chain in a sanitary place, such as the access door that was previously removed.
Lift the tank straight up, about one foot.
The tank is attached to the riser main, and the two must be lifted as a unit. Be careful and get help, as this can be very heavy.
Have a third person place the pipe vise around the riser main, on top of the top flange.
Tighten the pipe vise securely around the riser main.
Insert the rod vise between the riser main and the tank, around the pump rod.
Tighten the rod vise onto the pump rod.
When using the lifting arms, it is essential that each arm have a gap above and below it, and that the openings alternate direction up the pipe.
Set the first lifting arm just above (but not touching) the pipe vise.
Add the other two lifting arms.
Ensure three things about the arms:
They must be equally spaced around the riser main (120° apart).
The arms must not touch each other, the coupling at the top, or the pipe vise at the bottom.
The openings should alternate, to keep the riser main secure.
Communication is very important throughout this procedure.
As each person lifts up on their lifting spanner, they announce "got it" to let everyone else know they're holding.
Once all three lifters have announced that they've "got it," loosen the vise.
With the vise loosened, lift up the riser main 1-2 feet.
Lift only as high as everyone is comfortable.
Slide the three lifting spanners down on the riser main, into new lifting positions.
Again, make sure he lifting spanners don't touch anything above or below, and that they are evenly spaced about the pipe.
Tighten the pipe vise, following the same verbal procedure.
Repeat the procedure several times:
Once everyone is securely holding the pipe, loosen the pipe vise.
Lift the pipe.
Tighten the pipe vise.
Slide the lifting spanners down to a new position.
At ten feet, you will reach the first coupling in the riser main.
While the three lifters are holding the riser main, the vise operator must open the vise wide enough to let the coupling pass through the jaws.
Lift the riser main up through the pipe vise, until the coupling clears the jaws.
Tighten the pipe vise and move the lifting spanners down to a new position.
Use a pipe vise to unscrew the first section of riser main from the coupling.
Be careful not to remove the coupling from the lower section of riser main. You may need to use two pipe wrenches to hold the coupling still while you loosen the top section of riser main.
Unscrew the upper section of riser main from the coupling.
Be careful—the pipe will likely be full of water, that will leak out above the coupling as you unscrew the pipe.
Lift the section of pipe straight up from the coupling.
Be very careful to hold the pipe as straight up as possible. If it bends or falls over, it may damage the pump rod, or injure someone. Always have at least two people holding the pipe.
Use two wrenches to disconnect the upper section of pump rod from the lower section.
Hold the lower section stationary and rotate the upper section.
Once detached, lift and remove the upper sections of riser main and pump rod together, and set them down.
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