Goulds Pumps JC - IOM - Manual (Page 24)

LIQUID END
TO DISASSEMBLE THE LIQUID
END
1. Drain pumpage from pump and pipe line. Disconnect
auxiliary lubrication lines, suction and discharge pipe
line connections. Uncouple pump from driver.
s
! WARNING
When handling hazardous and/or toxic fluids, proper
personal protective equipment should be worn. If pump
is being drained, precautions must be taken to prevent
physical injury. Pumpage must be handled and
disposed of in conformance with applicable
environment regulations.
2. Remove cap screws or bolts which fasten suction disc
(182)to casing (100).
3. Remove suction disc (182) and suction disc liner
(100B) from casing fit.
4. Impeller (101) is threaded onto shaft (122). Remove
impeller by restraining coupling end of shaft and
turning impeller in the operating direction of rotation.
Do not apply heat.
NOTE: If impeller is frozen on shaft, restrain the impeller,
attach a spanner wrench to coupling end of shaft, and give
the wrench a sharp blow.
s
! WARNING!
DO NOT apply heat to hub or nose of threaded
impeller. There is a danger of explosion.
5. Remove cap screws or bolts which fasten casing (100)
to hub disc (184). Slide casing from hub disc fit.
6. Disassemble gland (107) from stuffing box.
7. Remove bolts which fasten hub disc (184) and bearing
frame (228). Carefully pull hub disc from shaft sleeve
(126). Packing (106) and seal cage (105) may be left in
stuffing box during disassembly of hub disc and
removed hub disc is separated from bearing assembly.
8. Pull or drive shaft sleeve (126) from shaft (100) if
replacement is necessary.
TO ASSEMBLE THE LIQUID END
1. Shaft (122) and shaft sleeve (126) must be clean and
free of burrs. Install sleeve (126) on shaft.
2. Carefully guide hub disc (184) stuffing box over
impeller end of shaft. Secure hub disc (184) to bearing
frame (228) with bolts (370C).
3. Position casing (100) with gasket into hub disc (184)
fit. Be sure discharge is in proper orientation. Fasten
casing to hub disc with cap screws (370J).
4. Install impeller (101) with gasket onto shaft (100)
Drawing impeller tight on shaft threads firmly secures
shaft sleeve. Seal sleeve to impeller with RTV silicone.
5. Place suction disc liner (100B) into casing fit. With
O-ring (412F) in position on liner O.D., install suction
disc (182). Fasten suction disc to casing with cap
screws (370E).
6. Set impeller clearance according to section Impeller
Clearance in the bearing section of this manual.
!
Improper impeller adjustment could cause contact
between the rotating and stationary parts, resulting
in a spark and heat generation.
!
The impeller clearance setting procedure must be
followed. Improperly setting the clearance or not
following any of the proper procedures can result in
sparks, unexpected heat generation and equipment
damage.
7. Install packing (106), seal cage (105) and gland (107).
Refer to assembly drawing for proper packing
sequence and to section Stuffing Boxes in the General
Instructions.
8. Install pump half of coupling or sheave. Realign pump
and driver. Connect pump section and discharge to
pipe line. Connect auxiliary lubrication lines.
9. Start-up instructions.....Refer to General Instructions
22
JC IOM 5/08