TRUCK SERV ICE MANUAL
ENGINE
2. Repair small cracks in pan by welding. Do not weld
Service Tools (Or Equivalent) Required
finished surfaces.
Service
Tool
3. Repair oil plug drain hole in aluminum oil pans when
Tool Number
Name
drain hole threads are damaged. Two oversize plugs
are. available to permit re-thread of oil pan drain holes at
ST-994
Bushing Mandrel
least twice.
ST-1 157
Spacer Mandrel
a. Part No. 62117 Oil Pan Drain Plug; Size 1-1/4 inch x
ST-1158
Bushing Mandrel
12 thread.
Desirable (Or Equivalent) Service Tools
(1) Enlarge damaged hole by drilling to 1-11/64 inch
[29.77 mm].
ST-1134
Dowel Pin Extractor
(2) Tap hole with a 1-1/4 inch x 12 tap. When tapping
ST-1160
Hose Assembly Tool Kit
aluminum, use fuel oil for lubricant to prevent tearing of
ST-1218
Mandrel ("0" ring)
metal.
ST-1223
Mandrel ("0" ring)
(3) Install new drain plug with a new copper gasket.
Tighten to 60 to 70 ft-lbs [8.3 to 9.7 kg m] torque.
b. Part No. 120349 Oil Pan Drain Plug; Size 1-3/8 inch x
LUBRICATING OIL PAN
12 thread.
The -extreme angular operation at which a vehicle is to
(1) Enlarge damaged hole by drilling 1-19/64 inch [32.94
be operated must be known and a lubrication system
mm]. Tap hole with a 1-3/8 inch x 12 tap.
provided that is suitable for the maximum angle of
(2) Install new drain plug with a new copper gasket.
operation. Engines for automotive vehicles should be
Tighten to 60 to 70 ft-lbs [8.3 to 9.7 kg m] torque.
protected to at least 10 deg. vehicle angularity of
4. Install pipe plugs in oil pan securely. Do not
operation and engines for construction equipment must
overtighten.
be equipped with the necessary components to permit at
least 30 deg. vehicle angularity of operation. See Table
LUBRICATING OIL DIPSTICK
7-1 for oil pan capacities and sump location.
The dipstick has been calibrated for a certain oil level
INSPECTION
when used with a specific oil gauge tube and with engine
1. Visually check oil pan for cracks or, if a leak is
in a certain position. Too high an oil level will cause
suspected, check using dye penetrant.
foaming, excessive oil temperature and power loss. Too
a. Spray suspected area with dye penetrant. Allow
low an oil level will result in oil pressure fluctuation and
penetrant to dry for fifteen minutes. Do not "force dry," b.
possible loss of oil pressure. In the event a dipstick
Spray area with dye developer and check for crack
should be lost or damaged a new dipstick is required. If
indications.
part number is unknown and it is necessary to mark a
2. Check heli-coil inserts on aluminum oil pans. If
blank dipstick for use, see part numbers listed below for
damaged, replace.
Check all threaded holes for
lengths available.
damaged threads.
REPAIR
Blank (Unmarked) Dipstick Length
1. Repair damaged heli-coil inserts.
Part Number
Inch
[mm]
a.
Determine hole size; then use proper heli-coil
extraction tool to remove damaged heli-coils. Condition
131461
11-7/16
[290.51 ]
hole and insert new heli-coil. Refer to Cummins Service
131462
23-1/4
[590.55]
Tool
131463
47-11/16
[1211.261
b. Use starting and finishing tap for heli-coil inserts for
161482
20-1/16
[508.061
new or oversize holes in aluminum. When tapping
161483
40-1/16
[1016.06]
aluminum, use fuel oil for lubricant to prevent tearing.
16t484
60-1/16
[1524.06]
c. After inserting heli-coil, bend starting end toward
197737
80-1/16
[2032.06]
center
then back toward side of hole to break off installation tip.
Engine must be mounted in chassis and in operating
position.
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