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 TM 55-1905-223-24-5
(f)
If the bore for the crosshead guide is damaged:
1
Use a 29/64 inch drill to cut the guide bore. Cut the oversize bore to
the same depth as the original bore.
2
Use a 15/32 reamer to ream the bore. Apply lubricating oil to the
reamer as the bore is being reamed.
3
Install the crosshead guide as in steps (e) or (f) of this procedure.
i.
Cylinder head water holes. Inspection and repair.
(1)
Inspection. The surface of the cylinder head around the water holes must
not have any scratches, cracks or corrosion deeper than 0.003 inch (0.08
mm). There must not be any defect which extends more than 3/32 inch
(
2.38 mm) from the edge of the water hold.
(2)
Repair.
(a)
To repair the water holes, use the following tools from the water hole
counterboring tool kit:
Bushing plate
Drive adapter
Adapter screw
Locating pin
Stop collar
Allen wrench
Counterbore cutter
Gauge block
(b)
Adjust the depth of the counterbore cutter:
1
Put the bushing plate on a flat surface with the side of the plate
marked "Top" away from the surface.
2
Install the counterbore cutter in the 5/8 inch (15.8 mm) bushing. Make
sure the cutter is against the flat surface.
3
Slide the stop collar up on the counterbore cutter.
4
Put the gauge block on top of the bushing plate. Hold the curve at the
plate against the cutter.
5
Slide the stop collar down against the gauge block (FIGURE 4-11).
Tighten the setscrew in the stop collar.
6
Remove the cutter and gauge block from the bushing plate.
(c)
Put the bushing plate on the cylinder head with the side of the plate
marked "Top" away from the cylinder head.
(d)
Fasten the bushing plate to the cylinder head. Insert the adapter
screw through an injector hole and through the bushing plate. Install
the adapter knob on the end of the adapter screw.
4-21
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