Page 18 of 38
Reassemble in Accordance with Minor Reassembly Instructions
1.
Apply grease to gasket seal surface on impeller housing. Then press gasket in place. Grease is used to hold gasket in position
2.
If Packing is used (reference assembly on page 13). Place packing glands in seal chambers in housing. Also, reference Page 39
for additional packing information. If Tuffseals are used (reference assembly on page 15). Make sure the Tuffseal on the impeller
housing side is ready to accept the shafts and that the collar set screws are unscrewed enough so that the shafts can slide through
the collars easily. Also, reference Page 40 for additional Tuffseal information. If mechanical seals are used (reference assembly on
page 17). Make sure the mechanical seal bodies in the impeller housing stuffing boxes are ready to accept the shafts and that the
seal set screws are unscrewed enough so that the shafts can slide through the seals easily. Also, reference Page 41 for additional
mechanical seal information.
3.
After checking for burrs, insert shafts through housing bushing, packing glands/mechanical seals/Tuffseals and gear case bushings.
V-rings should also be installed while inserting the shafts. Be aware that the V-rings need to be slid onto the shafts because of their
snug fit.
Note:
Insert drive shaft in the same position as when disassembled.
4.
Tighten cap screws, which hold the faceplate in place.
5.
Install carbon steel gear keys in shaft keyways.
6.
Slip proper timing gear on driven shaft.
7.
Slip timing gear on the drive shaft, rotating shaft to align key with gear keyway, taking precautions that the timing marks are face out
and aligned. There are two punch marks appearing on the gear on the drive shaft and one punch mark on the mating tooth on the
driven shaft.
8.
Spin the pump drive shaft several times to be certain that there is no interference from incorrect timing.
9.
Apply grease to gasket seal surface on gear case. Press gasket in place. The same gasket is used on both impeller housing and gear
case.
10.
Slide gear case cover over shafts, being certain that drive shaft bore in cover is properly positioned in relation to drive shaft.
CAUTION
Take care in sliding lip of oil seal over drive shaft. If proper care is not taken, the lip will be damaged and oil leakage will result.
11.
Tighten six cap screws holding gear case cover in place.
12.
If Packing is used (reference assembly on page 13). Install new packing in seal chambers and tighten packing gland nuts to finger
tightness. If pump is equipped with mechanical seals, install them according to the seal instructions and reference 12c for general
instructions. Also, reference Page 39 for additional packing information. If Tuffseals are used (reference assembly on page 15). Use
the seal spacers to set the right collar location. After setting the end clearances, tighten the gland nuts and then collar set screws to
lock the seal collar onto the shaft. Finally, turn the spacers away from the collar so they will not interfere with it during operation.
Also, reference Page 40 for additional Tuffseal information. If mechanical seals are used (reference assembly on page 17). Position
the mechanical seal body axially on the shaft using the previous mark that was made during disassembly. After setting the end
clearances, tighten the seal set screws to the shaft. Install the mechanical seal gland back into the impeller housing stuffing box and
tighten the gland nuts (32). Re-install the pipe plugs (24). Also, reference Page 41 for additional mechanical seal information.
13.
Install the drainpipe plug.
14.
Remove oil level plug and fill gear case with lube oil (see lube oil chart, page 9) to the oil level hole.
15.
Install and tighten fill plug and oil level plug.
16.
Spin the assembled pump several times to be certain that there is no interference from incorrect timing. If no interference is
apparent, then the pump is ready to be put back in service.