Document 71LQZJ7xzaqqRn7Jdrj5d8gme

FILE NAME: Ford (FD) DATE: 1983 Oct 24 DOC#: FD038 DOCUMENT DESCRIPTION: Memo - Clutch Dust and Use of Freon 11 or 12 Inter Ollico Hr. F . E. MaGaw Safety Engineer Lima Engine Plant Personnel and Organization Stati 2k October 1983 cc A. Klemm Subject: Clutch Dust and Ose o f Freon 11 or 12 Reference: Industrial Hygiene B u lle tin s 1*1 and h2 Ab you requested, we investigated the composition o f clutches installed on engines manufactured at Lima Engine and the use o f Freon 11 or 12 as cleaner before silicone gasket applications. We found that the Penta and the 2.3 li t e r OHC u t iliz e a non-asbestos fiber g.ass clu tch , u h i> the H60 V-8 made a t Lima s t i l l uses an asbestos clu tch . I t ..as been our experience that excess asbestos fibers can be present in a ir i f cluccr.es are carelessly packed a t the supplier causing fib e r shedding during tran sit, and 'employees throw the shipping boxes while unloading the clu tch es. This prooxem can be handled by in sistin g the supplier carefu lly package the clutches in CxSan , ; boxes with a flypaper type lin in g of the box and between clu tch e s. . I f fibers .. are noted in the boxes or on the surface a fter the above action s are taken, an . t in d u stria l hygiene study should be requested. . V Plant quality control wouLd lik e to use a Freon 11 or 12, isopropanol, and^acstone mixture of 805?, 105?, and 10* respectively to clean aluminum components oi engine before applying a silico n e gasket. Generally, we would discourage uss^ol Freon because of its very high evaporation ra te , inh alation t o x ic it y , and =crVe encourage the plant to conduct a shop t r i a l using methyl chloroform as a viaolaltern ative to Freon. I f the mixture noted above i s used with impervious g.o'.es and adequate ventilation (minimum of 27,500 cubic fe e t o f fresh a ir per i n solvent evaporated) and in small quantities without atom ization, employee e--.- should be controlled. However, the plant environmental control representative should be advised because Freon use i s monitored and may be restricte d du, -o n s involvement with the earth 's ozone lay er. 1-friU . H. B. L ick , In d u stria l Hygiene Associate Indu strial Hygiene Section Employee Health Services 013037 FAFD0012631