DURACLASS 1715 - Page 27

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TROUBLE CHART(Cont)
Trouble Cause Remedy
Minimum required pressures are as follows:
MODEL PRESSURE
psi kPa
1715, 1721, 1821 1000 6 895
1824 HD 1500 10 343
1715 DA, 1721 DA, 1821 DA 1300 8 963
1824 DA-HD 1500 10 343
2) Oil foaming 2a) Insufcient oil in:
tank—double-
acting hoists.
cylinder—single-
acting hoists.
2a) Add oil as required:
tank—with cylinder
fully extended, oil
should ow out of
oil level plug hole.
cylinder—with
cylinder fully ex-
tended, oil should
ow out of oil
ll hole at top of
cylinder.
2b) Suction line hose
ttings loose, al-
lowing air to enter
system.
2b) Tighten hose clamps
and ttings; vent
air from system.
2c) Oil too heavy 2c) Install proper oil for
expected tempera-
ture.
2d) Pump operated at
high speed in cold
weather.
2d) Operate pump at
slower speed.
3) Body raises unsteadi-
ly, jerks or vibrates.
3a) Air in system. 3a) Check suction hoses
and ttings for
leaks; retighten
loose ttings. Vent
cylinder.