OPTIMIZER
TM
38
1.4.14 ARMS DOWN DECELERATION VALVE
Some units are equipped with an arms down
deceleration valve. This deceleration valve
automatically decelerates the arms as they
are lowered. A cam bolted to the arm pivot
tube rotates as the arms are lowered and
gradually depresses the valve spool, reducing
the flow of oil exiting the shaft end of the arm
cylinders.
NOTE: The deceleration valve greatly
reduces impact on the arm assembly,
body structure, and hydraulic
components.
Location: Fitted to the underside of the body,
behind the arm pivot tube on the streetside.
Adjustment Procedure
1. Lower the arms down as far as
possible.
2. Position the cam so there is 8 inches
between its boss and the body (see
Figure #1.32).
3. Tighten the retaining bolts of the
cam (see Figure #1.33).
4. Raise and lower the arms while
running the engine at idle speed
and again while running the engine
at 1500 RPM.
NOTE
: The arms should slow when they are
at approximately 18 in. (45.72 cm) away
from being fully lowered and gently come to
rest at the bottom of their travel.
5. If the arms reach the bottom of their
travel with jarring impact of the arms
stop before being fully lowered:
a. Loosen the retainig bolt.
b. Tap the cam in the required direction.
c. Tighten the retaining bolt of the cam
and repeat step 4.
6. Attach a container or carry can to
the forks and repeat steps 4 and 5
without a container on the forks.
7. Remove the container from the
forks and repeat steps 5 and 6
until the arms decelerate with and
without a container on the forks.
8. Tighten the locking setscrew.
FIGURE #1.32
CAM BOSS
8” BETWEEN CAM
BOSS AND BODY
CAM RETAINING
BOLTS
Содержание Optimizer
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