Mechanical
AUTOMATIC CHAIN TENSION ADJUSTER
ME-4
3. Automatic Chain Tension Adjuster
The right and left bank timing chains are provided with their own tensioners. The tensioners are
of a hydromechanical type that utilizes the engine oil pressure and can automatically keep the ten-
sion of the chains at a proper level without need for manual adjustments.
The tensioner case has an oil port that aligns with the oil port in the cylinder block when it is in-
stalled in position. The inside of the tensioner case is a high-pressure hydraulic chamber with a
check ball. The pressure of the oil in the camber is adjusted by the relief valve. Featuring a plunger
with external screw threads, the tensioner can keep the chain taut constantly even when the en-
gine is stationary.
(1) Tensioner case (4) Spring
(2) Spring (5) Adjuster rod
(3) Plunger (6) Plunger case
B2H3896A
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