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REPAIR INSTRUCTIONS
Page 143
Pipe Plug Replacement
Any rust around a pipe plug is an indication of a
leak and the plug should be replaced.
REMOVAL
1. Using an appropriate wrench, remove the
plug.
2. Clean the threads in the block by running a
tap into the hole, just far enough to remove
any rust on the threads without expanding
the diameter of the hole. Use compressed
air to remove any chips from the block.
It is best to replace a leaking pipe plug. However,
if reusing the same plug, clean thoroughly, paying
special attention to the threads.
3. Using a wire wheel, clean the threads of the
plug. Visually check the thread surfaces for
burrs or damage. Then clean and check the
remaining surfaces.
INSTALLATION
Apply an appropriate Teflon
®
thread sealant to
the threads and install the plug. Tighten the plug
to specification. Refer to the torque chart in the
SPECIFICATIONS section of this manual.
New plugs may already have a sealer applied to
the threads. Applying a Teflon
®
sealer to the
threads will not adversely affect the precoating.
H-Ring Replacement
[213 LD]
H-rings are placed in the lifter bores to prevent
the lifters from turning, and performing the same
function as the roller tappet guide pins used with
electronic unit pumps. The H-rings have an
interference fit with the lifter bores in which they
are installed and, under normal circumstances,
are never removed.
If an unusual failure situation results in an H-ring
being dislodged, it can be reinstalled or replaced
with a new part, as required, using the following
procedure:
1. Remove the affected H-ring, using remover
tool J 42426 in combination with slide
hammer J 6125-1B. Refer to Figure 132.
132
Figure 132 — H-Ring Removal
5_106_00.bk Page 143 Friday, August 4, 2000 11:17 AM
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