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 TM 55-1905-223-24-5
(4)
The clearance between the bearing support and the camshaft gear must be 0.008 to
0.013 inch (0.20 mm to 0.33 mm). After measuring the space between the bearing
support and the gear cover flange, add an additional 0.008 to 0.013 inch (0.20 mm to
0.33 mm) to that number to determine the thickness of the shims required. Example:
Space of 0.060 inch (11.52 mm), measured with a feeler gauge, plus 0.010 inch (0.25
mm) for clearance would require 0.070 inch (1.77 mm) shims.
(5)
Use a micrometer to measure the thrust shims removed from the support at the time of
disassembly. Add or remove the shims as required to obtain the correct clearance
between the bearing support and the camshaft gear. Shims are available in the
following thickness:
Shim Thickness
mm
in
0.05
0.002
0.13
0.005
0.25
0.010
0.63
0.025
(6)
Install the required number of thrust shims as determined in paragraphs (4) and (5)
above and new preformed packing on the support bearing.
(7)
Lubricate the preformed packing with vegetable oil and install the support bearing into
the gear cover.
(8)
Tighten the capscrews to 20 ft-lb torque.
k.
Install the front crankshaft seal.(5, FIGURE 3-50).
NOTE
Lay-down Lip, Teflon (LDL TFE) oil seals for service replacement have an assembly tool
which protects the seal lip during shipment and installation. The "LDL TFE" oil seal must be
installed with the lip of the seal and the crankshaft clean and dry. Do not use any kind of
lubricant. The use of lubricant will result in oil leakage at the seal.
(1)
Use hand pressure to push the oil seal from the assembly tool onto the crankshaft as
far as possible. Remove the assembly tool.
(2)
Install the top plate (from oil seal puller/driver) on the crankshaft, and use three
vibration damper mounting capscrews and flat washers.
3-75
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