Installation of couplings on The Vertical Turbine Pump's solid shaft drivers

If the pump purchased is having a solid shaft driver, one of the following coupling arrangement between the driver and the pump shaft is applicable. Choose the procedure appropriate to

the coupling arrangement required.

Clean threads on pump shaft and on adjusting nut. Check for burrs and nicks.

All burrs, nicks and rust must be removed from all mating parts of flanged coupling and pump before installation. Failure to remove all burrs, nicks and rust may result in misalignment causing pump to fail.

 Installation of adjustable flanged coupling

a) The key [46A] for the driver shaft keyseat should be a snug or tight fit in the shaft keyseat, and a

sliding fit in the keyseat of the driver half coupling [42].

b) The key with pin [46] should be a sliding fit in pump shaft keyseat and a snug or tight fit in pump

half coupling [44] keyseat.

c) Side clearance of keys in keyseats should be checked with a feeler gauge. This clearance should not exceed 0.076 mm (0.003 in.) for a snug fit or 0.127mm (0.005 in) for a sliding fit. These are maximum allowable clearances. Closer fits are preferred, if possible. It may be necessary to file-dress keys to obtain proper fit.

d) Insert the key [46] with pin into pump half of coupling [44] putting the pin in the hole in keyseat.

The key should not extend below coupling.

e) Lubricate pump coupling half and key assembly with light oil and slide it onto pump shaft [12A] with flange up. Slide it past threads.

f) Lubricate adjusting nut [66A] with light oil and thread it onto pump shaft [12A] (left hand threads)

with male register down. Thread it on until top of shaft and top of nut are even.

g) Uncrate and lift driver to allow access to drive shaft.

The driver must be set on supports capable of carrying the entire weight of the driver before proceeding to step (h). Failure of supports could cause damage to the motor or loss of life.

h) Clean and check driver shaft. Remove any burrs.

i) Check the fit of the straight key and split thrust rings [312A] in their respective keyseats. (Refer to paragraph (a) regarding fit of the straight key).

j) Install straight key into keyseat. The bottom of the key must be above the top of circular keyseat for the split thrust rings.

k) Lubricate driver half coupling lightly and slide it onto driver shaft. Slide bottom of coupling above the top of the keyseat for split thrust rings.

l) Install split thrust rings into circular keyseat and slide the coupling down over them.

m) Proceed with the driver installation.(See Figure A)

using the short set of socket head cap screws [364]. The male register should be pointing

down. 

d) Proceed with the driver installation.