4 CHAPTER ONE 12. If special tools are required, make arrangements to get them before starting. It IS frustrating and time-consuming to start ajob and then be unable to com- plete it. 13. Make diagrams (or take a Polaroid picture) wherever similar-appearing parts are found. For instance, retaining bolts for a particular part may not be the same length . It is difficult 10remember where everything came from -and PARTS REP LACEI\I ENT mistakes are costly. It is also possible that you may be sidetracked and not return to work for days or even weeks -in which time carefully laid out parts may be dis- turbed.
Engine manufacturers often modify the parts of an en- gine during the lifetime ofthe engine model. When order- ing parts from the dealer or other parts distributor, always order by the model and engine serial number. Refer to Chapter Six or Seven. Write the numbers down and have them available. Compare new parts to old before purchas - ing them . If they arc not alike, have the parts manager ex- plain the difference. Table I lists model numbers. 14. When assembling parts, make sure all shims and washers arc replaced exactly where they were before re- moval. 15.
Whenever a rotating part contacts a stationary part, look for a shim or washer, Use new gaskets if there is any doubt about the condition of the old ones. A thin coat of silicone sealant on non-pressure-type gaske ts may help them seal more effectively. TORQUE SPECI FICA TIO;'lJ S Torque specifications throughout this manual are given in Newton- meters (Nom) and foot-pounds (ft.-lb.). Table 3 lists general torque specifications for nuts and bolts that arc not listed in the respecti ve chapters. To usc the table, first determine the size ofthe nut or bolt by mea- suring it with a vernier caliper. Figure 4 and Figure 5 show how to do this. 16.
If it becomes necessary to purchase gasket material to make a gasket for the engine, measure the thickness of the old gasket (at an uncomprcsscd point) and purchase gas- ket material with the same approximate thickness. 17. Use heavy grease to hold small parts in place if they tend to fall out during assembly. However, keep grease and oil away from electrical components. 18. Take time and do the job right. Do not forget that a newly rebuilt engine must be broken in just like a new one. FASTENERS The materials and designs of the various fasteners used on the engine are not arrived at by chance or accident. Fas-