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ORBIT PP AGRICULTURAL INSTALLATION AND OPERATIONS MANUAL
5.
Once the rotor (04) and flexshaft (33) have been withdrawn from the pump, the flexshaft must
be held in wood or brass covered vice jaws and the rotor adaptor nut (30) rotated clockwise
(left-hand thread) to be removed. Adaptor nut (30) may need to be heated to degrade the
thread bonding agent.
N.B. DO NOT PLACE STILLSON WRENCHES OR EXPOSED VICE JAWS IN DIRECT CONTACT
WITH THE FLEXSHAFT.
6.
Place the rotor in a suitably protected vice and remove the rotor adaptor nut (30) by rotating
counter clockwise (right-hand thread).
7.
Finally remove the mainshaft adaptor nut (29) (right-hand thread) and check condition of "O"
Ring (32) and flexshaft seal ring (31). Replace if necessary.
8.
Loosen 4 hex bolts (65) holding porting chamber (08) to bearing housing (12). Loosen gland
hex nuts (71).
9.
Porting chamber (08) and loose gland (37) can now be removed.
10.
Loosen hex bolts (64) and remove bearing cover (19) at drive end.
11.
Withdraw the mainshaft (21). Bearings (17) and lipseal (34) will pull-out with mainshaft (21).
12.
Strip bearing lock nut (13) and bearing lockwasher (14) to replace bearings. Bearings (17) will
have to be pressed off the mainshaft (21) to be removed.
13
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