Alfa Laval Toftejorg TJ20G, Instruction Manual

Page: 14 / 34

Maintenance and Repair
(continued)
Preventive Maintenance
6. Check Planet wheels (Pos. 15.4 and 15.5, page 15) while still mounted in planet gear carrier (Pos.
15.6, page 15). They must rotate easily on Shafts. If restriction or much clearance on Shafts is felt,
Planet wheels should be dismounted for inspection of bearing bushes and Shafts for Planet wheel
(Pos. 15.2, page 15). Max diameter of holes: 6.2 mm.
Check tooth wear.
If replacement is necessary, Planet wheels must be replaced as a pair.
7. Check unrestricted rotation of Ball bearings. Inspect for build-up of foreign material on Stem nut
(Pos. 9) and Hub nut (Pos. 18), in Ball retainers (Pos. 10, page 17) and Ball races.
8. Assemble machines as described in the following pages.
9. Check that the machine is in operating condition by inserting Screwdriver in top of Turbine shaft,
and easily turn Turbine shaft anti-clockwise. If any resistance is recognised, the machine should
be disassembled in order to localise the cause.
Apart from the parts specifically mentioned above, all the remaining wear parts should regularly be
inspected for wear. Wear parts are specified in the Reference List of Parts, page 28.
Service Card
For your registration of maintenance carried out, fill in service card which you will find at the back of this
manual.
Instruction Manual, Toftejorg TJ20G Page 13
IM-TE91A600-EN2
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