Cylinder Block, Liners, Pistons, and Rods
02
030
39
RG,RG34710,127 –19–09SEP99–1/2
Inspect and Clean Cylinder Block
RG8210 –UN–21MAY98
Cleaning Head Bolt Threads in Block
NOTE: All components, water gallery plugs, and oil
gallery plugs must be removed from the cylinder
block for inspection and cleaning. Refer to the
proper group for removal of all external and
internal mounted components.
1. Use D17015BR O-Ring Groove Cleaning Brush or an
equivalent brush to thoroughly clean all debris from
cylinder liner O-ring bores.
2. Remove cylinder head locating dowels, if not
previously removed. Clean out all threaded holes for
cylinder head mounting cap screws in top deck of
cylinder block. Use JDG978 Tap or an equivalent M16
x 2.0 tap approximately 152.4 mm (6.0 in.) long. Use
compressed air to remove any debris or fluid which
may be present in the cap screw hole.
IMPORTANT: If cylinder block is cleaned in a hot
tank, be sure to remove any aluminum
parts. Aluminum parts can be damaged
or destroyed by hot tank solutions.
Remove all serial number plates.
3. Clean block thoroughly using cleaning solvent,
pressure steam, or a hot tank.
Continued on next page
CTM100 (06APR04)
02-030-39
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=179
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General