8
MAINTENANCE
Every 6 month the oil in the seal unit and the complete pump must be inspected .
The following figures shows the pump assembly (except for figures 7 and 8 which are showing specials
disassembly tools) . For disassembly proceed in reverse order .
GENERAL
When dismounting the pump replace systematically all the O-ring , wear plate , diffusor centre and the damaged parts .
Replace the oil into the seal unit ( 7 l. SHELL Tellus Oil 32) .
Slightly oil the O-rings , the assembly surfaces and the threads . Tighten firmly all the nuts . The rotor shaft nut and the
impeller nut have to be tight to 400Nm . These nuts and the pump stud bolts have to be glued with Loctite N° 242 .
PUMP UPPER PARTS
- Put the top bracket of the pump on a holder placed on the ground
Fig 2
. Note that the part is equipped with two lifting
eyes in order to facilitate the pump manipulation .
- Screw in place 6 stud bolts P/N 69674 and set 2 O-rings W65142 in place into their grooves
Fig 3
.
Note : When delivered as spare part the top bracket cpl. P/N 492022 includes : Stud bolts W69674 (x6) ,
stud bolts W69652 ( x4) , stud bolts P/N W69654 (x4) , stud bolts P/N W494079 (x2) and stud bolts W69658 (x4) .
Lubricate with high temperature bearing grease the emplacement for the bearing .
- Put in place the inner casing cpl . (including the stator) on the top bracket
Fig 3
and
fig 4
.
