DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

Page 44 of 60

the two top bolts at the adjusting screws. Ream

the dowel holes and install dowel pins [6810].

Loosen adjusting screws and tighten the two top

bearing housing bolts.

6.8.10 Centralize rotor axially

a) Pour a small amount of oil on thrust collar and

thrust shoes. Install inboard thrust bearing

assembly.

b) Make sure center mark on masking tape is in line

with Seal Chamber face per Step e) of check

rotor axial float instructions.

c) Install dial indicator on thrust bearing housing

[3200] so indicator contacts end of shaft. Set

indicator at zero.

d) Push rotor outboard to ensure contact between

thrust bearing [3013] and bearing housing [3200].

e) Read the distance the shaft moved on the dial

indicator. This is the amount of shims [3126] to

be installed between thrust collar [3610] and

shoulder of shaft.

f) Remove masking tape.

6.8.11 Final bearing assembly

a) Remove inboard thrust bearing assembly.

b) Roll out both lower half bearing linings [3020].

Remove both bearing housings [3200].

c) Remove thrust collar lock nut [3713] and thrust

collar [3610].

d) Install both completely assembled mechanical

seals to shaft . Insert into seal chamber. Do not

tighten gland nuts [6580] or mechanical seal

drive collar at this time.

e) Position inboard flingers [2540] and outboard

flingers [2540] onto shaft and place in their

approximate position. Refer to pump sectional

drawing in section 8 of this manual.

f) Slide inboard thrust bearing seal ring [4010] over

shaft (refer to thrust bearing drawing and

instructions). Rest it on shaft in its proper

position. (Refer to pump assembly drawing).

g) Install shims [3126}.

Ensure proper thickness of shims [3126]

are seated against shoulder on shaft.

h) Install thrust collar key [6700], thrust collar

[3610], and lock nut [3713]. Tighten lock nut and

tighten set screws in lock nut.

Before installing thrust collar [3610] onto

shaft, heat the thrust collar to 104 °C (220 °F) (M AX.)

in successive stages working from periphery towards

centre.

i) Rig bearing housings [3200] to an overhead

hoist. Assemble bearing housings [3200] to

casing. Install dowel pins [6810] and snug cap-

screws [6570].

When installing bearing housings to casing,

ensure flingers [2540] are properly positioned with

the inner part of the bearing housing. Refer to pump

sectional drawing in section 8 of this manual.

j) Tighten bearing-body-to-casing screws [6570] to

the proper torque value.

Ensure dowel pins [6810] seat correctly to

obtain rotor alignment.

k) Wipe a film of oil on journal area of shaft. Place

lower half of bearing lining on shaft. Wipe a film

of oil on lower half of bearing lining. Roll lower

half of bearing lining into lower half of bearing

housing [3200].

l) Place upper half of bearing lining [3020] in

position on top of shaft.

m) Ensure bearing housings [3200] and parting-

flange surfaces are clean and free of dry

“permatex”. Coat flange with new “permatex”.

Assemble bearing housings [3200]. Install dowel

pins [6810] and cap-screws [6570]. Tighten cap-

screws to the proper torque value.

n) Assemble lower half of bearing lining [3020] to

thrust bearing housing in the same manner as

Step k).

o) Assemble upper half of bearing lining [3020] in

the same manner as step l).

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