. Electric railway journal . pparatus has been thereboring of the older types of motor shells in order to takeup the wear in the axle and armature bearing housings andthus prolong the life of the motors. The economy of thispractice is apparent from the fact that with the machine in The special inspection and cleaning to be given themotors is to consist of a thorough cleaning of all parts ofmotors by the use of compressed air in blowing out the dirtaccumulated after the top and bottom covers and hand-holeplates have been removed. Then the interior of the motor isto be wiped out with cheese-clot
. Electric railway journal . pparatus has been thereboring of the older types of motor shells in order to takeup the wear in the axle and armature bearing housings andthus prolong the life of the motors. The economy of thispractice is apparent from the fact that with the machine in The special inspection and cleaning to be given themotors is to consist of a thorough cleaning of all parts ofmotors by the use of compressed air in blowing out the dirtaccumulated after the top and bottom covers and hand-holeplates have been removed. Then the interior of the motor isto be wiped out with cheese-cloth and special attention isto be given to wiping off the commutators and brush holdersand the brush-holder insulation. The brush holder is thento receive a coat of shellac and allowed to become thor-oughly dry before the car is placed in service again. Themotor covers and hand-hole plates are then to be attention should be given to the armature and axlecap covers, gear castings, etc., to make certain that all. B. R. T. Running Gear—Two-Spindie Machine for Reboring Motor Housings use at East New York four Westinghouse No. 81 shellsa day are bored at a labor cost (one man at $ and oneman at $ a day) of $ each, whereas a new shellwould cost about $100. The Brooklyn company completedthe boring of its 1517 Westinghouse No. 68 shells in Aprilof this year, and of the 1820 Westinghouse No. 81 motorsapproximately 50 per cent had been rebored by Jan. 1, two and one-half years more will be required tocomplete this work, which is carried out in step with thestandardization of axle diameters from 4 in. to 4^ in. asdescribed elsewhere in these articles. As the result of the reboring and other modernizationof the Westinghouse No. 81 shells, the overhauling mileageof this motor has been lengthened from a 7000-mile to a10,000-mile basis, except that for every intermediate run of5000 miles the rebored motor receives what the companyterms a heavy inspectio
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