5 Maintenance
Take care not to damage shaft surfaces, in particular where bearings and lipseals will be located
Ensure all fastenings are tightened to the torque settings as shown in Technical Data (See chapter 6 Technical data)
S
Stteepp 44
Align the slots in the rotary face (73) with the pins fitted in the rotary holder bore (71), then firmly press the rotary face (73) fully
home into the rotary holder bore (71).
S
Stteepp 55
Lightly lubricate the static face profile elastomer (82) with suitable lubricant compatible with the application and fit into seal
housing (88) groove.
S
Stteepp 66
Lightly lubricate the seal housing profile elastomer (83) with suitable lubricant compatible with the application and fit onto
the seal housing (88).
S
Stteepp 77
Drop coil springs (87) into coil spring holes in the seal housing (88).
S
Stteepp 88
Align the slots in the static face (72) with the pins fitted in the seal housing (88), then firmly press the static face (72) fully
home into housing bore (88).
S
Stteepp 99
Spray acetone or similar solvent onto lint free tissue and wipe the sealing surfaces of the rotary face (73) and static face (72)
clean. N
NO
OTTE
E:: Do not spray acetone directly onto the sealing surfaces.
S
Stteepp 1100
Turn the rotary assembly upside down and slide the sleeve carefully into the static assembly mating the sealing surfaces together.
S
Stteepp 1111
Turn the complete seal around whilst holding it together.
S
Stteepp 1122
Press the seal housing (88) down whilst fitting the circlip (89) into the groove in the seal housing (88).
S
Stteepp 1133
Lightly lubricate O-ring (85) and fit onto the seal housing (88).
S
Stteepp 1144
Lightly lubricate outside diameter of lip seal (90).
S
Stteepp 1155
Firmly press the lip seal (90) fully home into the housing bore (88).
S
Stteepp 1166
Fit circlip (91) into the groove in the seal housing (88).
S
Stteepp 1177
Validate the assembly by compressing the seal a few times, making sure it springs back out each time.
Carefully fit the mechanical seal onto the shaft and into the pump housing making sure the flat of the seal housing aligns with the
flat in the pump housing and fit seal retaining screw and gland guard.
C
CH
HE
EC
CK
K S
SC
CR
RE
EW
W C
CLLE
EA
AR
RA
AN
NC
CE
ES
S A
AN
ND
D R
RE
ETTIIM
ME
E P
PU
UM
MP
P IIFF N
NE
EC
CE
ES
SS
SA
AR
RY
Y
D
Diissaasssseem
mbbllyy
Disassembly of the mechanical seal is the reverse procedure of assembly, as above.
42
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