SECTION 10 - ENGINE
10-3
Op. 10 000
GENERAL ENGINE INFORMATION
New Holland engines, N844 used in the model
LS160 skid steer and N844T turbocharger engine
used in the model LS170 skid steer.
GENERAL DESCRIPTION
The N844, N844T Series are four-cylinder stroke,
liquid-cooled, compression ignition engines,
designed for durability, low weight and compactness.
The engines are IDI (In Direct Injection). The
linerless cylinder block, three-piece helical gear
train, and flange-mounted fuel injection pump on the
engine cam, reduce frictional power loss and engine
weight. The special direct-injection or swirl chamber,
along with the small bore multi-cylinder design, offers
good fuel consumption, low noise, and excellent
start-ability.
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ENGINE COMPONENT DESCRIPTIONS
CYLINDER BLOCK
The cylinder block is made from high-grade cast iron
with copper and chrome additives and is integral with
the crankcase. The crankcase features five main
bearings of the tunnel block design, with crankcase
walls extending well below the crankshaft centerline
for strength and rigidity. The cylinder’s bores are
plateau honed for oil retention and extended ring life.
The non-machined surfaces are sealed to ensure
cleanliness.
CRANKSHAFT
The crankshaft is a chrome-molybdenum steel
forging, fully machined, static, and dynamically
balanced with integral counterweights. All bearing
surfaces are induction hardened. The axial location
is by thrust washers at the number five main bearing.
The five main journals run in replaceable
steel-backed cast copper/lead alloy bearings. The
front of the crankshaft is keyed.
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