Crane DGV2042, Installation Manual

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Examine bearing (3) and replace if required. If
replacement is required, remove seal parts, rotating
member (5b), spring (5c) and retaining ring (5d) from
shaft. Examine all seal parts and especially contact
faces. Inspect seal for signs of wear such as uneven
wear pattern on stationary members, chips and
scratches on either seal face.
DO NOT interchange seal
components, replace the entire shaft seal (5). If replacing
seal, remove stationary (5a) from intermediate coupling
(6) by prying out with fl at screw driver. Now bearing (3)
can be removed from motor shaft by removing retaining
rings (2) from shaft and then by using a wheel puller or
arbor press. Check sleeve bearing (39) for excessive
wear, if replacement is required, press sleeve bearing
(39) from intermediate support (6).
Inspect motor windings for shorts and check resistance
values. Check rotor for wear. If rotor or stator windings
are defective the complete motor must be replaced.
IMPORTANT ! - All parts must be clean before
reassembly.
E-4.2) Reassembly:
Bearings -
When replacing bearings, be careful not
to damage the rotor or shaft threads. Clean the shaft
thoroughly. Apply adhesive compound to shaft and press
bearing (3) on, applying force to the inner race of bearing
only. Install retaining rings (2) on shaft, making sure
bearing (3) is positioned between the retaining rings.
Press sleeve bearing (48) into intermediate coupling (6).
CAUTION ! - Handle seal parts with extreme
care. DO NOT scratch or mar lapped
surfaces.
Inner Seal - Clean and oil seal cavities in intermediate
coupling (6). Lightly oil (DO NOT use grease) outer
surface of stationary member (5a). Press stationary
member (5a) fi rmly into intermediate coupling (6), using a
seal pusher (see parts list- seal tool kit). Nothing but the
seal pusher is to come in contact with seal face (see Fig.
6). Make sure the stationary member is in straight. Place
retaining ring (5d) and spring (5c) over shaft until seated
on shaft shoulder. Slide a bullet (see parts list- seal
tool kit) over motor shaft threads. Lightly oil
(DO NOT
use grease) shaft, bullet and inner surface of bellows
on rotating member (5b), See Fig. 7. With fi nished end
away from motor, slide rotating member (5b) over bullet
and onto shaft until it engages spring (5c). Make sure
spring is seated on retainer and not cocked or resting on
bellows tail.
Motor - Slide motor rotor with bearing (3) and inner seal
(5) into intermediate coupling (6). Insert retaining ring
(7) into intermediate coupling (6). Set motor stator over
rotor being sure that stator drops fl at against register in
intermediate coupling (6).
Apply adhesive to shaft and press top bearing (8)
on, applying force to the inner race of bearing only.
Place shims (36) and washer (37) onto shaft. Be sure
to replace the same amount of shims as that were
removed. Place end bell on to motor and Insert motor
bolts in motor and torque to 17 inch pounds. Replace fan
(1b) and fan shroud (1a).
Assemble outer seal per paragraph E-3.2 and impeller,
cutters and volute per paragraph E-2.2. Refi ll with
cooling oil per paragraph E-1.3.
SECTION: F REPLACEMENT PARTS
F-1 ORDERING REPLACEMENT PARTS:
When ordering replacement parts, ALWAYS furnish the
following information:
1. Pump serial number and date code. (Paragraph F-4)
2. Pump model number. (Paragraph F-3)
3. Pump part number. (Paragraph F-2)
4. Part description.
5. Item part number.
6. Quantity required.
7. Shipping instructions.
8. Billing Instructions.
F-2 PART NUMBER:
The part number consists of a six (6) digit number, which
appears in the catalog. A one or two letter suffi x may
follow this number to designate the design confi guration.
This number is used for ordering and obtaining informa-
tion.
F-3 MODEL NUMBER:
This designation consists of numbers and letters which
represent the discharge size, series, horsepower, motor
phase and voltage, speed and pump design. This number
is used for ordering and obtaining information.
F-4 SERIAL NUMBER:
The serial number block will consist of a six digit number,
which is specifi c to each pump and may be preceded
by a alpha character, which indicates the plant location.
This number will also be suffi xed with a four digit number,
which indicates the date the unit was built (Date Code).
EXAMPLE: A012345 0490 .
Reference the six digit portion (Serial Number) of this
number when referring to the product.