Goulds Pumps 3700 Installation, Operation And Maintenance Manual page 87

3. Install and tighten the thrust-bearing end cover and bearing-frame screws evenly to the
torque values in the Maximum torque values for 3700 fasteners table.
4. Determine the axial end play as follows:
a) Mount the dial indicator.
b) Use a lever to apply axial force to the impeller end of the shaft and firmly seat the thrust
c) Apply axial force in the opposite direction and firmly seat the thrust bearing against the
d) Repeat steps b and c several times and record the total travel (end play) of the rotating
5. Repeat steps 1 through 4.
If the measured total travel falls outside the accepted range in step 4, remove or add the
appropriate quantity of individual shims or gaskets to obtain the proper total travel.
6. Perform the following based on your pump:
If your pump is...
SX, MX, LA, LX, XLA, XLX, 1. Remove the thrust-bearing end cover.
or XXL
SA or MA
7. Install the thrust-bearing end cover with O-ring over the shaft and into the bearing-frame
bore.
Ensure that the O-ring is not damaged while it enters the bearing-frame bore.
8. Perform the following based on whether or not your power end has the optional air-cooling
package:
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
bearing against the shoulder in the bearing frame.
thrust-bearing end cover.
element.
Total travel (end play) must fall in the range of 0.001 to 0.005 in. (0.025 to 0.125 mm).
Achieve the correct axial end play by adding or removing end-cover gaskets (for SA
and MA pumps) or end-cover shims (for SX, MX, LA, LX, XLA, XLX, and XXL pumps)
between the thrust-bearing end cover and the bearing frame. Add gaskets and shims if
no axial end play is present.
Then...
2. Press the INPRO seal into the thrust-bearing end cover and
3. Install the O-ring into the groove of the thrust-bearing end cover.
4. Lubricate the O-ring with a suitable lubricant.
1. Remove the thrust-bearing end cover.
2. Press the INPRO seal into the thrust-bearing end cover and
ensure that the expulsion part is at the 6 o'clock position and is
properly seated.
ensure that the expulsion part is at the 6 o'clock position and is
properly seated.
Maintenance
85