Shimano freehub service tool
Detailed map of Asterousia Mountains & Mesara Plain
18 April 2020
Custom universal aero spokes holder
21 April 2020DIY Shimano Freehub body tool
This is a self made tool which I first made in 2015 to open and service the shimano freehubs. My first attempts to service some freehubs was not as saccesful as I wanted. Although the freehub was serviced (chaned all the tinny balls and relubricate the interior) there was no play anymore, but I did not like the sound of the freehub when spinning.
Considering that the cost of a new shimano freehub (for a simple rear hub) is about 8-15€ I did not used the tool for many years.Lately some of my CUBE reaction E-bikes had some play at the cassete and I decided to change the freehubs. Unfortunatelly I could find the spare part online and the local importeur could not find also spare parts for a Shimano FH-TX505 hub (I could not even find a new same hub). So I decided to find and test again my tool.
This time I can say that I manage to service the freehubs perfectly and and the wheels performs like new.Although this is a tool for professinal mechanikers it is very simple to make it.
Shimano FH-TX505 freehub
How I made the tool
To make the tool I used the Parktool FR-8 tool. This is a heat treated alloy steel tool and it is used to removes four-notch freewheels from flip-flop BMX hubs with 30 x 1mm threads (cost new 13-15€).
All the frazing work was done by a professional lathe machinist.
In order to fit the freehub body screw the outer diameter of the tool was reduced to 28.8mm. The two of the 4 knobs was cutted with an angle grinder (the two remaining knobs fit perfectly the freehub screw). The lower protruding edge was also frazed with the lathe (cost 10€).
