Mec 3084RT - Page 165

Page 158 Speed Level Series - Service & Parts Manual
January 2019Section 9 - Troubleshooting - 3084ES Models
Hold the switch for 10 seconds to get an accurate reading on the pressure gauge.
If pressure is LOW, adjust main relief valve ¼ turn clockwise and recheck.
If pressure is HIGH, adjust main relief valve ¼ turn counterclockwise and recheck.
Repeat until correct.
Lift Relief (RV1)
Move the platform to full height with no load on platform.
Hold the switch for 10 seconds to get an accurate reading on the pressure gauge.
If pressure is LOW, adjust lift relief valve ¼ turn clockwise and recheck.
If pressure is HIGH, adjust lift relief valve ¼ turn counterclockwise and recheck.
Repeat until correct.
Steering Relief (RV2)
Energize the steering to full left.
Hold the switch for 10 seconds to get an accurate reading on the pressure gauge.
If pressure is LOW, adjust steering relief valve ¼ turn clockwise and recheck.
If pressure is HIGH, adjust steering relief valve ¼ turn counterclockwise and recheck.
Repeat until correct.
Counterbalance Valves
Loosen the locknut on one of the valves.
Turn the adjustment screw clockwise (to
the right) until it reaches the internal stop
and the screw will turn no further.
Turn the adjustment screw clockwise (to
the right) 3¼ turns.
Tighten the locknut while holding the
adjustment screw in position to prevent it
from rotating.
Repeat steps 1 through 4 on the other
Counterbalance valve.
Adjustment is complete.
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ART_2580
Counterbalance
Valves
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