Veris-technologies MSP EC and pH (1997-2008 floppy disk drive 1.02E) Manuel d'utilisateur télécharger pdf (Page 23)

Veris Technologies

Pub. #OM MSP03-1

turn, so that the hub turns freely, without endplay. Install cotter pin, and

reinstall hub cap.

Coulter electrode

hubs -- The coulter electrode hubs operate in a significantly harsh environment,

and annual inspection is of utmost importance. The double-lip seals are

designed to keep grease in, and contaminates out, but they are the cause of

practically all hub failures. It is advisable to disassemble, clean, repack, and

re-install annually. To perform this maintenance, do the following:

1) Remove hub cap by turning in a clockwise direction (left-hand thread

prevents loosening in operation).

2) Remove cotter pin, castle nut, thrust washer, and remove hub.

3) Remove outer bearing and knock out inner bearing using a wooden

dowel or brass rod. Be sure to match each bearing to its location on the

hub and do not mix bearings between hubs. Natural wear will cause the

bearing and race to form pattern that is unique to that set.

4) Thoroughly wash hub and bearings in solvent and dry.

5) Replace bearings and races that show excessive wear or pitting.

6) Pack with grease, and reassemble -- or reassemble, and pack via grease

zerk with wheel bearing or lithium grease. It is advisable to replace the

seals.

7) Adjust bearing pre-load as mentioned above. Excessive pre-load may

cause plugging in extremely loose soil conditions, and excessive endplay

may damage the commutators.

8) Inspect the sealing o-ring on the hub cap, and reinstall by threading

counter-clockwise on the hub.

9) Adjust commutator clearance as mentioned above in section on

commutator adjustments.

Seal

Hub

Nut

Thrust Washer

Bearing

Swing arm

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Veris-technologies MSP EC and pH (1997-2008 floppy disk drive 1.02E) Manuel d'utilisateur Page 23