DESCRIPTION

TECHNICAL FIELD

The invention is a tool used to remove the bushes from the casing which is secured by interference fit of order 60 microns. This is specifically designed where commercial bearing/ bush puller can't be used. Bushes are removed without any physical damages to it and can be reused.

BACKGROUND OF INVENTION

Most of the bushes in LCA are shrink fitted using liquid nitrogen (LN2). Some of the problems encountered in the above process are bush ID excessive shrinkage; Bush getting struck ■halfway, scoring/scratching on the ID of bushes. In order to rectify the above problem bush needs to be removed without damaging it and retaining the bore finish quality. Existing bush/bearing pullers commercially available can't be used due to its geometrical constraint and may result in damaging the parts.

SUMMARY OF INVENTION

Bush puller is a tool designed to facilitate the bush removal from the housing. The simple design enables to remove the bush without any physical damage to bore and bush as well. By changing the puller dimension this tool can be used universally for general application.

PROCESS DETAIL DESCRIPTION

Special bush puller is designed to cater the need of force-reaction requirement to remove the bush from the housing without damaging it. Base is placed on the reaction side of the bracket -- -and the puller at the force requirement side. Torque is applied to the screw rod by leverage rod which is transmitted to the puller in turn exert force on the bush.

DRAWINGS

Fig.l: Bracket-bush assembly Fig.2: Details of Bush puller

•Fig.3: Application view