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sense it turns with the timing belt..it would be a good idea to replace it also while you are there..
this should help you some
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Honda Civic/CRX/del Sol 1984-1995 Water Pump
See Figures 1 and 2
FIG : Fig. 1: Exploded view of common water pump and peripheral accessories-1988-91 vehicle shown
FIG : Fig. 2: Water pump mounting-1984-87 engines
Honda Civic/CRX/del Sol 1984-1995 Timing Belt and Tensioner
See Figures 1, 2 and 3
If you remove the timing gear with the timing belt cover in place, be sure not to let the woodruff key fall inside the timing cover when removing the gear from the camshaft. Inspect the timing belt. Replace if over 90,000 miles old, if oil soaked (find source of oil leak also), or if worn on leading edges of belt teeth.
FIG : Fig. 1: Timing belt and front cover assembly-1984-87 engines
: Fig. 2: Positioning the crankshaft and camshaft pulleys before installing the timing belt-1984-87 engines
FIG : Fig. 3: Timing belt tension adjustment-1984-87 engines
When installing the timing belt, do not allow oil to come in contact with the belt. Oil will cause the rubber to swell. Be careful not to twist the belt unnecessarily or bend in a 90° angle, since it is made with fiberglass; nor should you use tools having sharp edges when installing or removing the belt. Be sure to install the belt with the arrow facing in the same direction it was facing during removal.
WARNING Do not remove the adjusting or pivot bolts, only loosen them. When adjusting, do not use any force other than the adjuster spring. If the belt is too tight, it will result in a shortened belt life. 1988-91 Engines
See Figures 4, 5 and 6
FIG : Fig. 4: Timing belt and front cover assembly-1988-91 engines
FIG : Fig. 5: Positioning the crankshaft and camshaft pulleys before installing the timing belt-1988-91 engines
FIG : Fig. 6: Timing belt tension adjustment-1988-91 engines
Inspect the timing belt. Replace it if it has been in service longer than 90,000 miles, if it is oil soaked (find and correct the source of the oil leak), or if it is worn on the leading edges of the belt teeth.
The tensioner is spring-loaded to apply proper tension to the timing belt automatically after making the following adjustment. Be sure to always adjust the timing belt tension with the engine cold.
Do not remove the adjusting or pivot bolts, only loosen them. When adjusting, do not use any force other than the adjuster spring. If the belt is too tight, it will result in a shortened belt life.
See Figures 7 and 8
FIG : Fig. 7: Exploded view of timing belt assembly including pulleys, sprockets and their mounting-1992-95 D15B7 and D15B8 engines
FIG : Fig. 8: Turn belt as shown in the direction of the arrow. Be sure to check the belt's teeth for wear