SPECIFICATIONS
Page 301
COMPONENT FEATURES AND MATERIALS
Item Description
Air Compressor Flange mounted, oil lubricated, water cooled
Camshaft Induction hardened, gear driven
Coolant Filter Spin-on type, disposable
Coolant Pump Centrifugal rotor impeller, belt-driven
Connecting Rods Steel forgings (Each bearing cap must be matched to its
original rod.)
Crankshaft Drop forged steel, induction hardened, seven main bearings
Cylinder Block In-line six cylinder, nodular iron, machined with bearing caps,
stiffener plate added at bottom, timing gear train mounting
plate added at rear, guide pins for head installation
Cylinder Head One-piece cast iron alloy; supports overhead camshaft, four
valve system, unit injectors; replaceable cast iron valve
guides with oil seals; replaceable steel valve seats; valve
alignment 12° from normal; unit injector copper sleeves;
integral fuel passages; integral thermostat housing; guide
slots for installation on block
Cylinder Head (Valve) Cover 16 attaching screws; mounts crankcase pressure sensor
Cylinder Head — Valve Springs Double springs on each valve
Cylinder Head — Valve Guides Cast iron, replaceable; with oil seals
Cylinder Head Gasket One-piece steel stamping; elastomer seals added; one-time
bosses to aid head installation
Cylinder Head Screws M16 (26)
Cylinder Liner Wet; replaceable; with EPDM rubber and Viton seals
Diesel Particulate Filter Ceramic catalyzed or ceramic non-catalyzed depending on
chassis model
Flywheel Housing Die-cast aluminum
Fuel Filters Two: main and pre-filter
Fuel Injection Individually programmed unit injectors (6): EECU controlled;
common fuel gallery in head; constant supply pressure;
over-pressure return
Fuel Supply Pump Gear type pump integral with power steering pump;
crankshaft idler gear driven
Lubrication System Crankshaft gear driven lubrication pump; system integrated
within block and head; serves camshaft, rocker arm shaft,
pistons, crankshaft, air compressor; three filters, 1 centrifugal
and 2 full-flow; lubricant level sensor in oil pan; distribution
housing attaches to bottom of block, holds pump, strainer and
pump safety valve
Main Bearing Caps Nodular iron; machined with block; No. 7 mounts lubrication
pump; numbered for consistent reassembly; cast and drilled
for consistent reassembly; sleeve guides for screws; thrust
washers at No. 4 main bearing journal
Manifold — Exhaust Three-piece, six port
Manifold — Inlet One-piece, six port
Pistons Steel; one-piece; 3 ring grooves
Piston Rings — Compression 2: 1 trapezoidal cross section, 1 rectangular cross section
Piston Ring — Oil 1 garter spring type; scraping
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