TM 5-3825-225-14&P
j.
Ring Clearance in Groove . ..........................................................0.0025-0.0045 in. (0.063-.114 mm)
k.
Compression Ring Gap (Top) ....................................................... 0.009-0.014 in. (0.229-0.356 mm)
I.
Compression Ring Gap (No. 2 & No. 3) .......................................0.009-0.014 in. (0.229-0.356 mm)
m. Scraper Ring Gap (No. 5) .............................................................0.009-0.014 in. (0.229-0.356 mm)
1-27. PISTON PIN.
a
Type ..............................................................................................................................Fully Floating
b.
Outside Diameter of Piston Pin .............................................. 1.0625-1.0627 in. (26.987-26.993 mm)
c.
Length of Piston Pin .................................................................. 2.673-2.687 in. (67.894-68.250 mm)
d.
Fit in Piston Boss ................................................................................................................ Transition
1-28. CONNECTING ROD BEARING SLEEVE.
a.
Type .............................................................................................. Steel Backed, Lead Bronze Lined
b.
Length of Small End Bearing Sleeve ......................................... 0.935-0.955 in. (23.749-24.257 mm)
c.
Outside Diameter of Small End Bearing Sleeve ........................ 1.221-1.222 in. (31.013-31.039 mm)
d.
Inside Diameter Before Reaming.................... ...................... 1.0495-1.0545 in. (26.657-26.784 mm)
e.
Inside Diameter After Reaming............. .............................. 1.06315-1.0632 in. (27.004-27.005 mm)
f
Clearance Between Small End
Bearing Sleeve and Piston Pin .............................................. 00045-0.0007 in. (0.0114-0.0178 mm)
1-29. CONNECTING ROD.
a
Type ................................................................................................................................. "H” Section
b.
Cap Location to Connecting Rod ............................................ Serrations, Offset 45° to the Horizontal
c.
Big End Parent Bore Diameter ................................................. 2.146-2.1465 in. (54.508-54.521 mm)
d.
Small End Parent Bore Diameter....................................... 1.21875-1.21975 in. (30.956-30.982 mm)
e.
Length from Center Line of Big
End to Center Line of Small End . .......................................... 6.217-6.219 in. (157.912-157.963 mm)
f.
Big End Setscrew .......................................................................................... 0.375 in. (3-8 in.) UNF
g.
Connecting Rod End Float ....................................................... 0.0065-0.0105 in. (0.165-0.267 mm)
1-30. CONNECTING ROD ALINEMENT.
Large and small end bores must be square and parallel with each other within the limits of 0.010 in. (0.25 mm)
measured 5 in. (127 mm) each side of the axis of the rod on test mandrel. With the small end bearing sleeve fitted, the
limit of 0.010 in. (0.25 mm) is reduced to0.0025 in. (0.06 mm).
1-7
