TM 5-4310-368-14
6-67.
a.
Accomplish necessary prerequisites (see Figure 6-54).
b.
Place counterweight (1) on driving gear (7).
c.
Insert tight-fit screw (2) through counterweight (1), place lock washer (4) on screw and screw on hex nut (3)
tightening to 18 lb-ft.
6-68.
CHECK AXIAL AND RADIAL TOLERANCE OF RODS ON CRANKSHAFT
a.
Move all connecting rods to one side and measure the axial clearance with a feeler gage. Tolerance is 0.4
mm minimum, 0.8 mm maximum (Figure 6-55). If axial clearance is greater than 0.8 mm it can be reduced
by an additional spacer (15) between connecting rod 3rd stage (14) and connecting rod 4th stage (13). If axial
clearance is still greater than 0.8 mm, replace driving gear assembly.
b.
Tilt each connecting rod in turn from side to side and measure the maximum movement. Radial clearance is
acceptable if upper end of each connecting rod can be tilted by 1-2 mm (Figure 6-56). If not, replace driving
gear assembly.
NOTE
Replacing individual connecting rods is not recommended as the various bearing
tolerances are only adjusted at the factor using needle cages with different needle
6-69.
a.
Press two ball bearings (12) and (11) onto the driving gear (10) (Figure 6-53).
b.
Press shaft seal (5) into bearing cover (30).
c.
Press bearing cover (30) onto driving gear (10, Figure 6-25).
6-70.
a.
Accomplish necessary prerequisites (see Figure 6-54).
b.
Place gasket (4) on bearing cover (30).
c.
Insert driving gear (10) (Figure 6-53) with bearing cover (30) into upper part of crankcase (37).
d.
Place six spacers (3) on six internal hex-head screws (2).
e.
Screw bearing cover (30) to upper part of crankcase (37) with the six internal hex-head screws (2). Torque to
8 lb-ft.
f.
Press ball bearing (10) simultaneously into upper part of crankcase (37) and onto driving gear (10) (Figure
g.
Press shaft seal (9) into cover (6).
h.
Place gasket (8) on cover (6). Screw cover (6) onto upper part of crankcase (37) with four internal hex-head
screws (7) and tighten to 8 lb-ft.
6-62
