Thread Repair Services
Pear Tree Engineering


Removal of

Broken bolts and studs

Glow plugs and Injectors



Repair damaged internal threads

Mobile service available

Sale of repair kits and inserts

  Home   Damaged Threads  

Broken Studs Drills,
Taps and Extractors


Glow Plugs and Injectors

  Contact Us  

Broken bolts and studs can be removed at your premises subject to call out and mileage charges.
By prior arrangement, we can also work on smaller, transportable items sent to us,
either by carrier or by your own transport.


When previous attempts to remove the stud have been made, the work is usually made more difficult
by being drilled "off-centre", enlarged or having a broken extractor stuck in, taking longer and costing more.

Broken drills, taps and studs with broken extractors in them can
be removed by spark eroding.


Our mechanics are fully trained in the use of portable spark eroding equipment
to remove broken taps, drills and studs.

 No discernable heating and there is no distortion and no damage to the parent metal.

 at sites including:-
Inverness, Peterehead, Glasgow, Redcar and Darlington, Swansea, Lowestoft,
 Colchester, Shoeburyness, Canterbury, London, Hastings, Bodmin and Falmouth.

Rolls Royce, M.O.D., Bombardier, Stenna Line, Isle of Man Steam Packet,
Corus, Taylor Woodrow, B.A.E. Systems, Alcoa, QinetiQ, David Brown and Railcare.