Operating instructions

8-1
SECTION VIII
FINAL ASSEMBLY AND TEST
8-1. GENERAL INSTRUCTIONS.
8-2. LUBRICATION. Apply clean engine
lubricating oil liberally to all bare steel surfaces,
journals, bearings and bushings, before and/or after
installation, depending on accessibility, except where
special lubricants are mentioned.
8-3. TIGHTENING TORQUES. See Table of
Tightening Torques, Section VI and instructions in
paragraph 7-2.
8-4. CLEARANCES. Wherever possible, measure
clearances of running parts as they are installed.
When end clearances and backlashes cannot be
measured with normal thickness gauges due to the
inaccessible position of the parts, test for binding and
excessive looseness as well as possible by moving the
running part.
8-5. COVERS. Unless the atmosphere is unusually
free of dust and airborne grit, it is advisable to cover
openings as soon as possible and to cover assemblies
and the partial engine assembly whenever they are not
in the process of being assembled. Cover all openings
into which small parts might be dropped.
8-6. CRANKCASE, SANDCAST (See Figure 4-
21).
a. Install mount brackets on left crankcase and attach
assembly to engine stand with support under casting.
b. Lubricate all main bearing inserts and crankshaft
journals and install thrust washers. Lift shaft
assembly by No.1 connecting rod and propeller
flange. With the aid of an assistant holding up Nos. 3
and 5 rods, lower assembly into position in left
crankcase bearings with oil seal positioned so it enters
the seal cavity in the crankcase. The connecting rod
position numbers, if properly installed, will be toward
upper case flange. Carefully lay odd numbered rods
on upper case flange.
FIGURE 8-1. LEFT CRANKCASE AND SHAFTS ASSEMBLED ON STAND