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Rev. B
Sand Pro 2020/3020/5020Hydraulic System (Rev. A) Page 4 – 18
Troubleshooting (cont.)
Problem Possible Cause
Attachment raises, but will not stay
up.
Lift cylinders leak internally.
Neutral position check valves in lift valve leak.
Difficult to make slight changes
when raising and lowering the at-
tachment (Sand Pro 2020 and
3020).
Optional orifice fitting (85–9720) for lift control outlet is available
that will improve sensitivity of lift control valve. This fitting is stan-
dard on the Sand Pro 5020.