551-A00 Page 9/21
MAINTENANCE
PUMP ASSEMBLY
Refer to ‘PARTS DESIGNATION’ for ref. numbers.
1. Ensure all parts are clean before assembly. Remove any
burrs.
2. Ensure Impeller maintains an accurate free sliding fit on
Shaft and key.
This is critical
.
3. Lightly lubricate O-Rings, Lip Seals and Mechanical Seal
Faces with a compatible good quality detergent-free light oil
before assembly.
NOTICE:
At all times when handling and installing mechanical seals,
care must be taken to ensure lapped faces and seats are
not damaged. Particular attention must be given to carbon
seats to prevent marking or chipping.
Torque Table 1
Head / Casing Capscrews (6)
Ft-lbs 63
N-m 85
Motor Capscrews - 3/8” (29)
Ft-lbs 12
N-m 16
Motor Capscrews - 1/2” (29)
Ft-lbs 28
N-m 38
4. Fig
7
Fit Lip Seal (55) to Cartridge.
Note position of lip.
5. Fig
8
Fit O-Ring (48) to Seal Seat
(40).
Fit Seal Seat to Cartridge (57).
6. Fig
9
Press Seal Seat in with
fingers.
Ensure complete and
square engagement.
7. Fig
10
Fit Primary O-Ring (57B)
to Cartridge (57) then fit
Secondary O-Ring (57C).
8. Fig
11
Fit IE Bearing (23) to
Shaft.
This is an
interference fit.
Apply force to inner race
of Bearing only.
Lock Bearing in position
with Circlip (25)
9. Fig
12
Fit DE Bearing (24) to Shaft.
This is an interference fit.
Apply force to inner race of
Bearing only.
10. Fig 13
Fit Bearing/Shaft Assembly
into Cartridge (57).
Align the Drive Pin to the
Keyway and fit Seal rotating
subassembly (41, 42, 45, 46,
47) to Cartridge/Shaft
Assembly.
11. Fig 14
Press down and lock in
position with Circlip (58).
12. Fig 16
Fit Dust Seal (33) to Body.
Note position of lip.
Summary of Contents for EBSRAY RC20
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