Document M4NryBmqKM9dQ574ejnMk0xBk

~A , _. O^pY'^ r\SZi -- All Bmfcfrs Johns-Manville ~t bo 1 wa<; SALES CORPORATION PACKINGS AND FRICTION MATERIALS DIVISION. l' CHESTNUT STREET AT FOURTH PHILADELPHIA, PA. 19106 TELEPHONE: 922-5000 AREA CODE 215 ,SKI February 6 1967 The General Hoc trie Co. 1501 Roanoke Boulevard Salem, Virginia A.TTH: Mr. G.L. McFarland Design gnglnetring Room 213 U: Your letter December 19th / "* Gentlemen: M'.Cuyf*??* ^ f ti $*> 4 * 7 here uniformly and may be removed-In certain areas during the molding operation'. The nee of the gauge represented by your sketch GH121966-1 faslble and cemslti .c.oments_are cxpec-tedshortlT from oar ptBn*-r^ personnel. Hith regards to the radiusTre con hold, on part Bo.lb vo regret that our limited experience vlth assemblies on thTis range will not permit us to give you any firm commitment on a tolerance when the part lainspected la the free manner. Me know that the friction material element of this assemHy is molded end ground to ' the correct radius and thickness prior to Its bonding to the metal mbar. The. only, practical may to. set tolerances on a part of this site is to-accumulate data as production parts ere made. This would mean a clo coordination between our inspection department during the initial period vhen m art developing these tolerances. c.\- ',>* He ere sorry that we. cannot give you more cmdrpe information on the tolorance matter but felt it best'that we pass along to you our position Don this matter. WV-21546