Disassembly; Pump Cover And Rotor Removal - Johnson Pump Top Wing Series Manual

4.6

Disassembly

See also sections 4.2 General instructions, 4.3 O-rings and lip seals,
4.4 Shut down and 4.5 Tightening torque for nuts and screws.
4.6.1

Pump cover and rotor removal

Do not forget that liquid may still flow out of the rotor case when removing the pump
cover (0030).
0450
1. Remove the cap nuts (0450).
2. Cavities are provided diagonal on the mounting surface between cover and rotor
case to permit removing pump cover with aid of e.g. a screwdriver. Check the O-ring
(0801).
3. Lock the rotors by placing a block of soft material between the rotors.
4. Unscrew retainer (0250) counter clockwise by using the retainer tool.
5. Remove retainer O-ring (0800).
6. Remove the rotor (0020).
7. Remove the second rotor in the same way.
A.0500.301/314.C – IM-TW/10.00 GB (0401)
0800
0801
0250
0030
0020
Retainer tool
33