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 TM 55-1905-223-24-5
(11)
Pull the drive shaft up to remove the tool bit from the bushing. Move the lever to the "on"
position.
(12)
Remove the boring tool from the pump body. Do not damage the tool bit.
(13)
Remove the cover from the body.
(14)
Remove the guide bushing. Clean all metal particles from the body and cover.
(15)
Measure the inside diameter of the bushing.
Worn Limit
New Minimum
New Maximum
Bushing Inside
0.6185 in
0.6165 in
0.6175 in
Diameter
(15.710 mm)
(15.659 mm)
(15.684 mm)
Idler and Drive
0.6145 in
0.615 in
0.6155 in
Shaft Outside
(15.608 mm)
(15.62 mm)
(15.634 mm)
Diameter
(16)
Check for restricted or plugged lubricating oil pump signal orifice.
(17)
Remove the oil pressure signal line (12, FIGURE 3-65) and the 1/8 inch NPTE adapter (13)
from the lubricating oil pump cover (23).
(18)
Use a wire that is 0.040 inch (1.0 mm) or less in diameter to clean the signal orifice in the
pump cover.
(19)
Use solvent and compressed air to wash the debris from the signal orifice and the pressure
regulator bore in the lubricating oil pump.
(20)
Clean the inside of the signal line (12) and the 1/8 inch NPTE adapter (13) with solvent and
compressed air.
(21)
Replace the 1/8 inch NPTE adapter (13) and the oil pressure signal line (12).
ASSEMBLY (Refer to FIGURE 3-64).
a.
Apply a coat of lubricating oil to the large outside diameter of the idler shaft (26).
b.
Install the large outside diameter of the shaft (26), from the gear pocket side of the body (31), into the
bore in the pump body.
c.
Use gear and spacer mandrel and an arbor press to push the shaft (26) into the bore.
3-106
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