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4.
OPERATION
4.1
To remove the damaged thread
4.1.1
Having assessed the internal thread of the oxygen sensor to be not "fit for purpose", the following instructions will enable economical
repair.
4.1.2
Remove the reamer from the kit and obtain a 16mm socket or spanner. the reamer has a machined 16mm hexagon shank.
4.1.3
Hand ream clockwise using a 16mm socket or spanner ensuring alignment through the existing threaded hole to produce a Ø18.6mm
plain hole. A small amount of a cutting lubricant will assist the metal cutting process. this will provide the core size for the M20x1.5mm
pitch thread of the new insert.
4.1.4
clean newly bored hole, clean the reamer and replace in its case.
4.2
Cutting the M20x1.5mm pitch insert thread.
4.2.1
Remove the M20x1.5mm tap from the kit and use the same socket or spanner as used in the reaming process.
4.2.2
the tap has a 'lead in' taper to ease the cutting of the initial thread. Ensure alignment through the newly bored hole. A small amount of a
cutting lubricant will assist the thread cutting process. turn the tap clockwise applying a vertical force observing the cutting performance
of the tool. cutting clockwise for half a turn and swarf clearing for a quarter of a turn counter clockwise. continue this alternating process
until the hole is tapped through or to the required depth. Remove tap.
4.2.3
clean newly tapped hole, clean tap and replace in its case.
4.3
Insert placement
4.3.1
Remove the two piece insert tool and an insert from the kit. It is not required to remove the bolt from the tool.
4.3.2
Screw the insert on to the thread of the insert tool finger tight with the insert shoulder against the main body.
4.3.3
Screw sub-assembled insert tool and insert into newly tapped M20 hole, application of a minute amount of a proprietory threadlocker
adhesive on the external thread of the insert is advisable but not essential. Screw in full length to shoulder and tighten. DO NOT over
tighten.
4.3.4
Remove insertion tool by turning bolt hexagon head counter clockwise. Ensure there is no presence of threadlocker adhesive on the
internal thread.
4.3.5
clean and replace the insertion tool in storage case.
4.3.6
"Run" the tap through the new insert thread to remove any residual material, oval or interference high spots created by previous actions.
4.3.7
clean threaded hole, clean tap and replace in its case.
5.
MAINTENANCE
5.1
Keep the tool in a clean, serviceable condition, using a lightly oiled cloth to clean it.
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: no liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: for a copy of our latest catalogue and promotions call us on 01284 757525 and leave your full name and address, including postcode.
© Jack Sealey limited
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business
Park, Bury St. Edmunds, Suffolk,
IP32 7AR
Original Language Version
www.sealey.co.uk
01284 757500
W e b
sales@sealey.co.uk
01284 703534
email
VS5281 Issue: 1 - 27/09/12
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