TM 9-6115-604-34
NAVFAC P-8-633-34
WARNING
Dry cleaning solvent, PD-680, Type III, or equivalent, is flammable
and moderately toxic to the skin, eyes, and respiratory tract.
Assure adequate ventilation. Skin, eye, and respiratory protection
is required to avoid injury to personnel.
WARNING
Compressed air used for cleaning or drying can create airborne
particles that may enter the eyes. Pressure shall not exceed 30 psi
(207 kPa). Wearing of goggles is required to avoid Injury to
personnel.
(2)
After flushing, remove the residual cleaning compound by rinsing the cooler elements with solvent PD-
680, Type Ill, or equivalent, and blow dry with compressed air.
b.
Testing. Use suitable adapters to plug the openings in the elements and place the elements in a water tank;
apply 60 psi (414 kPa) of air pressure to the element Inspect for air leaks. Replace defective cooler
elements.
8-7.
LUBE OIL COOLER INSTALLATION.
a.
Lubricate the new preformed packings (12, Figure 8-2) and position them in the grooves on the lubricating oil
element (10) transfer tubes.
b.
Position the lubricating oil elements (10) in the block, seating the transfer tubes and preformed packings (12)
in the holes provided. Install new oil cooler gaskets (11) on the cooler element stud shoulders.
c.
Install the front water and rear header covers (6 and 7) on the block with new front cover gaskets (8 and 9)
and secure with screws (2 and 3) and Iockwashers (4 and 5). Cross-tighten the capscrews (2 and 3) to 25 to
30 pound-feet (34 to 41 newton-meters) torque.
d.
Install the self-lockng nuts (1) on the element studs; tighten the nuts to 40 to 45 pound-feet (54 to 61 newton-
meters) torque.
e.
Install the aftercoolers in accordance with paragraph 9-42.
SECTION Ill. OIL PUMP ASSEMBLY
8-8.
GENERAL. The engine is pressure lubricated by a gear-type lubricating oil pump boated inside of the oil
pan at the rear of the engine. The pump is mounted to the block directly below the crankshaft and is driven by the rear
crankshaft gear.
a.
The oil pump draws lubricating oil from the oil pan via a suction tube. The pump gears transfer the oil from
the suction cavity of the pump to the pressure cavity. A pressure regulator valve dumps excess oil back into
the oil pan.
b.
From the lubricating oil pump, oil flows through block drillings to the lubricating oil cooler located in the block
"V, through the cooler, then to the filters. A by-pass valve is provided in the lube oil filter head inlet cavity to
ensure against oil flow interruption if the filter elements become clogged.
c.
From the filter head, oil enters and passes through filter elements, and flows to the piston cooling passages,
and the main oil passage located in the block. Pressure control valves limit the flow of lubricating oil to
piston cooling nozzles, depending on lubricating oil pump pressure.
d.
The main bearings and camshafts are lubricated through intersecting drillings, directly from the main oil
passage. Oil flows from the cam passages to the camshaft bushings, cam follower shafts, and through
passages to the cylinder heads. The cam followers are individually drilled to supply lubricating oil to the
rollers and push tube seats. Rocker lever bushings are shaft lubricated, and the adjusting screws and valve
guides are lubricated through drillings in rocker levers and bushings.
e.
The connecting rod bearings are lubricated from cross drillings in the crankshaft, and oil flows through
drillings in connecting rods to lubricate the piston pins and bushings. Lubricating oil is routed from the main
oil passage through passages in the gear housing and cover to lubricate front gear train gears, bushings, and
idler shafts.
f.
Lubricating oil is routed from the camshaft passages to each turbocharger through external lines from
drillings in cylinder block Turbocharger drain oil is dumped back into oil pan through drillings in the cylinder
block
8-5
