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.
NOTICE:
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.
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 disassem-
bly of hub disc.
8.
Pull or drive shaft sleeve (126) from shaft (100) if replacement is necessary.
5.3.2 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 se-
cures 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 man-
ual.
WARNING:
•
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, unexpect-
ed heat generation and equipment damage.
7.
Install packing (106), seal cage (105) and gland (107). Refer to assembly drawing for proper pack-
ing 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 dis-
charge to pipe line. Connect auxiliary lubrication lines.
9.
Start-up instructions. Refer to General Instructions
5.3 Liquid end
28
Model JC Installation, Operation and Maintenance Instructions
