TM 5-3805-281-24-2
Cylinder Block, Liners, Pistons, and Rods
COMPLETE DISASSEMBLY OF CYLINDER
BLOCK (IF REQUIRED)
If complete inspection and "Hot Tank" cleaning of cylinder
block is required, refer to the appropriate group for
removal of all external and internal mounted components
listed below:
1. Remove crankshaft and pulley if not previously
removed. (Group 15.)
2. Remove all remaining lubrication system components.
(Group 20.)
3. Remove water pump and all remaining cooling system
components (Group 25.)
4. Remove timing gear train and camshaft. (Group 16.)
5. Remove fuel injection pump and fuel filter assembly.
(Group 35.)
6. If necessary to "Hot Tank" the block, remove oil gallery
plugs, water gallery plugs, piston cooling orifices and
the engine serial number plate. (See REMOVE AND
CLEAN PISTON COOLING ORIFICES, later in this
group.)
RG,RG34710,1132
1923OCT971/1
REMOVE AND CLEAN PISTON COOLING
ORIFICES
IMPORTANT: A piston cooling orifice failure could
cause damage to pistons, piston pins,
rod pin bushings, and liners. If a piston
cooling orifice is left out, low or no oil
pressure will result.
1. Remove all six (four shown) piston cooling orifices (A)
and inspect each cooling orifice to make sure it is not
plugged or damaged.
Piston Cooling Orifices in Block
2. Use a soft wire and compressed air to clean orifice.
Replace if condition is questionable.
RG,RG34710,1133
1923OCT971/1
