Rear Gear Train; Gear Timing - International VT 275 V6 Manual

VT 275 DESIGN FEATURES
C C A A M M S S H H A A F F T T
G G E E A A R R
B B A A L L A A N N C C E E R R S S H H A A F F T T
G G E E A A R R
C C R R A A N N K K S S H H A A F F T T F F L L A A N N G G E E
A A N N D D G G E E A A R R
C C R R A A N N K K S S H H A A F F T T
F F L L A A N N G G E E & & G G E E A A R R
20
H H I I G G H H P P R R E E S S S S U U R R E E O O I I L L
H H I I G G H H P P R R E E S S S S U U R R E E O O I I L L
P P U U M M P P G G E E A A R R
P P U U M M P P G G E E A A R R
T T I I M M I I N N G G P P I I N N H H O O L L E E
S S H H A A F F T T G G E E A A R R
T T I I M M I I N N G G G G E E A A R R
International ®

Rear Gear Train

• The VT 275 gear train is located at the rear
of the engine. The crankshaft gear is a
press fit on the crankshaft and drives the
camshaft gear directly. The crankshaft
flange with integral gear is pressed on the
end of the crankshaft then clamped with
six 12mm bolts. The camshaft gear must
be timed to the crankshaft gear during
assembly to maintain the correct relationship.
• The rear flange gear drives the primary
balance shaft gear at a one-to-one ratio.
The balance shaft runs through the hollow
camshaft to the front of the crankcase and
has the balance shaft counterweight
bolted to the front of the shaft. The flange
gear and balance shaft gear must be timed
to maintain the correct relationship
between the balance shaft counterweight
and the crankshaft.
• The high-pressure oil pump is located in
the Vee of the engine and is driven directly
off the camshaft gear. The oil pump gear
does not require timing.
• Note: The crankshaft gear that drives the
camshaft is located behind the flange gear.

Gear Timing

C C A A M M S S H H A A F F T T
G G E E A A R R
• The camshaft and balance shaft must be
timed to the crankshaft for proper engine
operation. During reassembly a timing pin
that aligns the camshaft gear and the
balance shaft gear is placed through the
B B A A L L A A N N C C E E R R
gears and into a hole machined in the
crankcase, then the crankshaft is installed
while aligning the balance shaft and flange
gear dots. If only the balance shaft is out of
the engine, the shaft can be installed while
aligning the balance shaft gear and flange
gear dots.
D D O O T T S S
VT 275 V6 Engine