1997 Volkswagen Jetta How to take a water pump apart?

Hello .. thanks for the donation .. much appreciated

You will have to remove the timing belt covers and timing belt to remove the pump from engine !

Coolant pump, disassembling and assembling
The following list pertains to Fig. 3 .
- 20 Nm (15 ft lb)
- Coolant pump pulley
For ribbed belt
- Coolant pump
Check that shaft rotates smoothly
- Gasket
Always replace
- Thermostat
To check, heat in water
Starts to open at approx. 87 °C (188 °F)
Fully open at approx. 102 °C (215 °F)
Opening stroke: 7 mm (0.28 in.) minimum
- Connector Pipe
- O ring
Always replace
- Clip
- 10 Nm (7 ft lb)
- Flange
- Coolant pump pulley
For V-belt
Removing and installing, use VAG 1590
Fig. 3: Exploded View Of Coolant Pump

Toothed belt, removing, installing, adjusting tension
CAUTION:To prevent damage to valves and piston crowns while the toothed belt is removed, do not turn camshaft when crankshaft is at Top Dead Center (TDC).

Removing
Remove ribbed belt, and remove tensioner for ribbed belt if applicable, see RIBBED BELT, REMOVING AND INSTALLING.
Remove crankshaft vibration damper/pulley.
Remove coolant pump pulley.
Remove upper and lower parts of toothed belt guard.
Mark running direction on toothed belt.
Loosen toothed belt tensioner and remove toothed belt.
Installing
NOTE:For repairs that require removing the toothed belt from the camshaft sprocket only, such as when removing the camshaft or cylinder head, see SEALING FLANGE AND PRESSURE PLATE/DRIVEPLATE, REMOVING AND INSTALLING.
For repairs that require completely removing the toothed belt, such as when it is being replaced, install and adjust the toothed belt as described as follows.

CAUTION:Before turning the camshaft, make sure that the pistons are NOT at Top Dead Center (TDC). With the toothed belt removed there is danger of damaging the valves and piston crowns.

Align marking on camshaft sprocket with marking on cylinder head cover or toothed belt guard.
Fig. 21: Aligning Marking On Camshaft Sprocket With Marking On Cylinder Head Cover Or Toothed Belt Guard
Install toothed belt on crankshaft toothed belt sprocket and intermediate shaft toothed belt sprocket (note running direction when installing a used belt).
Mount crankshaft vibration damper/pulley with at least one bolt (note installation position, holes are offset).
Align mark on crankshaft vibration damper/pulley with mark on intermediate shaft sprocket (cylinder 1 set to TDC).
Fig. 22: Aligning Mark On Crankshaft Vibration Damper/Pulley With Mark On Intermediate Shaft Sprocket (Cylinder 1 Set To TDC)
Install toothed belt on tensioner and camshaft toothed belt sprocket.
Increase tension on toothed belt tension by turning tensioner pulley with spanner 2587 in direction of -arrow-.
It must be possible to twist toothed belt by 90 degrees with thumb and forefinger half-way between camshaft and intermediate shaft toothed belt sprockets. See Fig. 23.
Fig. 23: Checking Toothed Belt Tension By Twisting Toothed Belt By 90 Degrees
Tighten lock nut on belt tensioner.
Tightening torque: 45 Nm (33 ft lb)
Turn crankshaft through two complete revolutions, and check belt tension.
Remove crankshaft vibration damper/pulley.
Install lower toothed belt guard.
Install coolant pump pulley, crankshaft vibration damper/pulley and upper toothed belt guard.
Install tensioner for ribbed belt, if applicable.
Tightening torque: 20 Nm (15 ft lb)
Install ribbed belt RIBBED BELT, REMOVING AND INSTALLING.

If you did not remove the belt or any of the belt's pulley's then the timing should not have moved .. unless you managed to somehow move the crankshaft or camshaft without actually moving the belt as well ? you need to check the timing marks are still aligned correctly

From this diagram could you tell me which pulley you turned and did the belt and pulley turn together at the same time ?

let me know

The belt behind the black cover is the timing belt. If you didn't remove it. And moved it, the pulleys. (Camshaft and crankshaft)should have all turned with the belt so the timing should not be out !