Flowserve SVCN 7, Установка, эксплуатация и обслуживание

Страница: 53 / 62

SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
7312 110 ft-lb (150 Nm)
7315 210 ft-lb (285 Nm)
7319 410 ft-lb (555 Nm)
e. Mount a dial indicator on the shaft to read on the outer thrust bearing races. Runout on
the outer thrust bearing races should not exceed 0.0015 in. (0.04 mm). Tap the bearing
races into place with a soft-faced mallet if necessary.
f. When bearing nut has been properly tightened and runouts are within specification, bend
a lock washer tab into a slot on the lock nut.
4. Lift the bearing housing (2998) and place it vertically on wooden blocks. Ensure that the
blocks are high enough to not allow the end of the shaft (1) to touch the floor beneath the
blocks when it is installed. Secure the bearing housing to prevent it from tipping.
5. Suspend the shaft assembly vertically for installation into the bearing housing (2998).
Position the oiling rings (2889A) (if installed) on the radial bearing (3036A) and oiling ring
retainer (356) to prevent damaging them as the shaft assembly enters the bearing housing.
Then lower the shaft assembly into the bearing housing.
6. If applicable, install the outer oiling ring (2889B) on the shaft.
7. Coat the mating surfaces of the bearing housing (2998) and bearing housing end cover
(2999B) with Loctite Gasket Eliminator 504 sealant (or equivalent). Install bearing housing
end cover and evenly tighten cap screws.
CAUTION
If you have oil mist lubrication, make sure that the oil drain
holes are plugged on the thrust and radial sides of the
bearing housing to allow oil mist to pass through bearings.
Use 3/8”-16U NC X 0.38” long setscrew for thrust side and
¼”-20UNC X 0.25” long set screw for radial side.
8. Carefully lift bearing housing (2998) and place it in a horizontal position. Secure the bearing
housing to prevent tipping or rolling.
9. Determine thrust bearing axial clearance as follows:
a. Mount a dial indicator to read on end of shaft. Push on coupling end of shaft until shaft is
all the way toward impeller end; then set the dial indicator to "0".
b. Thrust shaft toward coupling end and read indicator: Repeat steps a and b to confirm
reading.
c. Clearance is correct if dial indicator is between 0.001 to 0.009 inch.
d. If dial indicator indicates travels less than 0.001 in. or more than 0.009 in., correct by
machining the end cover.
10. Lubricate and install new O-rings (1259A/B/C/D) on each bearing isolator rotor (3043A/B)
and stator (3044A/B). Using a wooden mandrel, push each bearing isolator stator and rotor
over the shaft (1) until it is seated evenly in its proper location in the bearing housing (2998)
or bearing housing end cover (2999B), as appropriate.
11. Lubricate and install new O-rings (1259E) in the outboard fan (2719). Then slide the
outboard fan over the shaft until it is seated in its proper position against the bearing housing
end cover (2999B).
DO2604-13 - 4-10 -