Flowserve DMX - Manual (Page 45)

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09
Page 45 of 60
p) Assemble outboard thrust bearing seal ring
[4010] to shaft and temporarily assemble support
head [3830] or end cover [3266] to bearing
housing. Secure two cap screws.
q) Pour a small amount of oil on thrust collar [3610]
and thrust bearing assembly. Assemble inboard
and outboard thrust bearings to bearing housing.
Rotate base ring so the "keys" of base ring
enter their key ways at the parting flange in the
bearing housing.
r) Ensure bearing housing [3200] and parting flange
surfaces are clean and free of “permatex”. Coat
flange with new “permatex”. Assemble bearing
housings [3200]. Install dowel pins [6810] and
cap-screws [6570]. Tighten cap-screws to proper
torque value.
6.8.12 Set thrust bearing end-play
a) Remove end cover [3266] or support head [3830]
from bearing housing. If pump is equipped with a
support head and shaft driven main oil pump,
assemble shaft extension and "driver half" of
coupling to pump shaft.
b) Place shims [3126] against outboard thrust
bearing "base ring". Assemble end cover [3266]
to bearing housings. Tighten cap-screws [6570]
to proper torque value.
c) Install a dial indicator on coupling end bearing
housing so the indicator contacts the end of the
shaft. Push the rotor outboard (towards thrust
bearing) and set indicator at zero. Push rotor
inboard. Indicator should read 0.23 mm (0.009
in.) to 0.33 mm (0.013 in.). Add or remove shims
[3126] to obtain the proper end-play. Coat end of
bearing housings with “permatex” and
reassemble end cover, torque and recheck end-
play.
6.8.13 Final assembly
a) Position bearing flingers [2540] approximately
1.02 mm (0.040 in.) away from end covers and
tightens the set-screws [6570].
b) If pump is equipped with shaft driven oil pump,
assemble "driver half" of coupling to oil pump.
Position "coupling spider" in the driver half
coupling. Assemble oil pump with its gasket to
support head. Tighten nuts to proper torque
value.
c) Ensure seal gland is seated properly in seal
chamber bore. Assemble washers [2905] and
tighten nuts [6580] to the proper value. Tighten
drive collar.
Refer to seal chamber.
d) Using a strap wrench, rotate pump shaft to be
sure rotor is properly aligned and does not bind.
Do not rotate pump shaft excessively.
Internal parts depend on the liquid being pumped for
lubrication.
e) Install remaining cap-screws [6570] between
bearing end cover [3266] and bearing housing
[3200]. Install coupling key, pump-half coupling,
coupling nut and set coupling-nut set-screws.
Refer to coupling removal section.
f) Check coupling/shaft alignment as described
under shaft/coupling alignment and assemble
coupling.
g) Install coupling guard.
h) Replace all auxiliary piping, instrumentation and
pipe plugs.
i) Refer to Pump lubricants section for lubrication
information.
j) Refer to Running or operation section for starting
procedure.
6.8.14 Parting flange gasket
a) Using proper recommended 0.397 mm (1/64 in.)
thick gasket material, locate and cut stud holes,
using upper half casing as a template.
b) Lay gasket on lower half casing, using either a
gasket adhesive or a band of shellac
approximately 13 mm (1/2 in.) wide on the outer
edge of lower casing.
c) Place upper half casing on top of gasket and
allow time for gasket adhesive or shellac to set
up.
d) Remove upper half casing.
e) Using a sharp knife, cut gasket with downward
strokes only. Make sure all cuts are neat and
exact, especially on internal edges of casing. If