TM-5-3805-254-14-P-2
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
JUNE 1980
TM-5-3805-254-14-P-2 - Page 380 of 894
TRUCK SERVICE MANUAL
ENGINE
Hose Size
1.
The supply and drain lines should be No.
6 (5/16 inch
[7.9 mm] inside diameter) flexible hose up to 10 ft.
[3 m]
in length.
For lines over 10 ft.
[3 ri], use No.
8 (13/32
inch [10.3 mm] inside diameter).
All fittings in by-pass
circuit should be no less than 1/4 inch [6.4 mm] pipe size.
2.
The return line should discharge below oil level in the
oil pan to prevent foaming.
3.
Supply line should be connected to oil circuit between
oil pump and full-flow filter.
LUBRICATING
OIL
COOLERS
Direct
Mounted
DISASSEMBLY
1.
Remove cooler cover, "O" ring, and brass retainer,
being careful not to scratch or mar sealing surface on
element.
2.
Use mineral spirits or equivalent to clean out
lubricating oil and contaminants trapped in housing by
forcing cleaner through the oil ports.
3.
To remove element from housing, insert two 7/32 inch
[5.56 mm] rods 8 inches [503.2 mm] long into the outside
row of tubes opposite each other, rods should not drag
bottom of housing.
4.
Place a bar on top of housing and bundle face,
between rods, and rotate element in housing to unseat
lower "O" ring.
Lift up gradually on rods to free "0" rings.
INSPECTION
1.
To prevent hardening and drying of foreign
substances, clean immediately, after removing end cover
plates, with approved cleaning solvent that will not harm
non-ferrous metal, blow through core with compressed
air.
2.
Inspect core for corrosion or cracks where tubes are
welded to end plates.
Inspect connections and liner for
cracks or damage.
3.
Inspect cooler assemblies for leakage between oil and
water passages.
a.
Clamp cooler assembly in fixture and assemble air
connection.
b.
Place unit in water tank and apply 1 to 4 psi [0.07 to
0.28 kg/sq cm] air pressure to water side.
Inspect for air
leaks, porosity in casting, etc.
c.
Apply line air pressure 35 to 40 psi [2.5 to 2.8 kg/sq
cm] to oil side.
Inspect for air leaks.
REPAIR
Repair damaged tubes by inserting a small O.D.
tube
inside damaged tube.
Cut and flare ends; then solder
securely.
Do not damage adjacent tubes with heat while
soldering.
If more than 5% of tubes are defective,
discard cooler.
ASSEMBLY
1.
Lubricate rubber "O" ring and place in groove at
bottom of housing.
Make sure ring is not twisted and is
free of cuts or nicks.
2.
Push element (3, Fig.
7-8) into housing (1), aligning
index marks (2) on housing and element.
3.
Using proper "O" Ring Mandrel, install "O" ring around
top of element.
Place retainer ring over rubber "O" ring.
4.
Install pipe plugs (if removed), on coolers using 3/4
inch pipe plugs with raised bosses torque to 25 to 35 ft-
lbs [3.5 to 4.8 kg ml.
Torque others to values in Table 1-
1, Cylinder Block Group.
Support, Pump Mounted Or Auxiliary Oil Cooler
DISASSEMBLY
1.
Remove cooler, cover, support and gaskets from
cooler
Fig.
7-8 (N10705) Aligning oil cooler index marks
housing (2, Fig.
7-9) if not previously removed.
2.
Remove retainer rings (4) from housing (2).
3.
Remove exposed "O" ring (3) under retainer, being
careful not to scratch or mar sealing surface on element.
376
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