moyno 2000 CC, Service Manual

Page: 6 / 18

4
nded in order to
of the pump, adjust the gland nuts
2. If leakage is excessive after 15 minutes of operation,
tighten the gland nuts ¼ of a turn.
f a turn after an additional 15
minutes if necessary and repeat this procedure until a
reduce leakage by providing a
not tighten until zero leakage is obtained.
kage can be tolerated, consult
cate
Approved Lubricant or
Figure 4-1. Cross Section of Packing Housing
When packing is new, frequent minor adjustments during the
first few hours of operation are recomme
compress and seat the packing.
1. Upon initial start-up
for a leakage rate of 50-100 drops per minute until the
packing has seated and adjusted to the operating
temperature (approximately 10-15 minutes).
3. Tighten the gland nuts ¼ o
desired leakage of 1-2 drops per minute is obtained.
Adding grease may also
barrier at the lantern ring.
AUTION:
Do
C
Overtightening the packing gland may result in accelerated
wear on the packing and damage to the shaft. In those
ituations where no packing lea s
your Moyno Authorized Representative.
Area To Lubri
Equivalent
Packing
ACG-2
(Dubois Chemical, Inc.)
4-4. Packing Replacement
Note:
In this section, the first reference to each pump part will
e followed by a number or a let b ter in parentheses ( ). These
drive shaft (400).
numbers and letters are used to identify the pump parts and
hardware items in the Exploded Views in Section 13-1.
When tightening the gland nuts can no longer regulate leakage,
remove and replace the packing. The entire pump does not
need to be disassembled to replace the packing. Briefly,
replace as follows:
1. Remove packing gland nuts and slide gland halves (152)
back along
2. Use a packing puller tool (see Figure 4-2) to remove the
packing (150).
g Removal Tool
xcessive wear or
is worn, or is badly
scored or grooved, it should be replaced.
nstall a lantern ring and four
packing rings, lubricating them before installation with a
sure to stagger the
Note: The stuffing box is supplied with four rings installed, a
AU
AYS USE A PROPER PACKING TAMPER
resul
piece
. ith packing gland
ASSEMBLY
ference to each pump
rt will be followed by a numb . These
numbe are those rts and
hardwa e Exploded Vi
5-2. Disc ct Pump
1. Disconnect the power source.
2. Close suction and discharge valves to isolate the pump from
the lin
-3. Stat moval
ile
Figure 4-2. Packin
3. Inspect surface of drive shaft for e
grooves due to packing rub. If shaft
4. If drive shaft is not worn, i
good grade of packing grease. Be
packing ring joints at 90-degree increments.
fifth ring may be added after initial compression.
TION:
ALW
C
TOOL TO INSTALL PACKING. Do not use a pointed or sharp
tool, as damage to the packing material or drive shaft could
t. To assure proper shaft lubrication, never use a one-
spiral wrap packing.
5 Replace packing gland halves and secure w
and nuts (156).
6. Adjust packing per Section 4-3.
5-1. DIS
Note:
In this section and in following sections on CLEANING,
SPECTION, and ASSEMBLY, the first re IN
pa er or letter in parentheses ( )
use p pa rs and letters
re items in th
d to identify the pum
ews in Section 13-1.
onne
e.
5 or Re
1. Remove section of discharge pipe attached to discharge
flange (200).
2. Remove discharge flange by unbolting from stator clamp ring
(210) and remove stator gasket (510). Use a screwdriver tip to
remove stator retaining ring (480), stator clamp ring (210),
and pump support (220) from stator (500).
3. Unbolt stator clamp ring (210) from suction housing and
remove stator from rotor (turning stator clockwise wh
removing will ease disassembly). Remove the stator retaining
ring. Remove stator clamp ring from stator. See Figure 5-1.
for the typical retaining ring removal procedure.
Figure 5-1. Typical Retaining Ring Removal
5-4. Suction Housing Removal
1.
Remove four bolts and lock w
housing ( ashers (230) holding the suction
100) to the drive adapter (10).
apter housing.
ve Shaft Assembly Removal
om the drive
shaft.
2. Pull the suction housing toward the rotor and away from the
adapter housing. Place a block of wood under the suction
housing to prevent it from dropping as you pull it away from
the ad
5-5. Rotor / Con Rod / Dri
1. Slide the slinger ring (60) along the drive shaft (400), towards
the gear reducer, exposing the drive pin (70).
With a punch and hammer, tap the drive pin fr 2.