Inspection and repair of KONE THV-328H gearbox

Scope of work:

We performed an inspection and revision on gearbox KONE CRANES THV-328H.

The conversion operations consists of:

• Disassembling and cleaning of the gearbox.
• Inspection of the parts consisting of the following instruction:

• Gearbox casing
• The outside box was in unaccepted condition, we had to scrape, to degrease and to conserve in the excisting colour.


• Inside first gear set
• In way of the brake drum the input pinion shaft showed some light damages.
• In way of the toothing performed sharp crownteeth.


• Inside second gear set
• In way of the toothing performed light scuffing.
• In way of the toothing performed sharp crownteeth.


• Miscellaneous
• Seals and bearings were renewed.
• Renewing of one bearingcap.
• Re-using of the cell filler plug.
• Re-using of the oil drain cock.
• Renewing of the brake drum.

Preparing for test run, deploying of the gearbox, filling with oil and a test run for four hours.

Preparing of the gearbox for shipping.