Harrington Hoists and Cranes TCR Large Cap - (10-25 Ton) - Manual (Page 39)

39
Table 8-1 Troubleshooting Guide (continued)
Symptom Cause Remedy
Hoist moving in wrong
direction (pendant control)
Pendant control hoses are
terminated to incorrect ports on hoist
body.
Connect the control tubes in
accordance with
Section 7.4 .
Hoist is overloaded. Reduce load to hoist rated capacity.
Faulty pendant control or control
hose(s) Repair or replace pendant control or
control hose(s)
Hoist lowers but will not lift
Lack of air pressure or partial loss of
or leakage in air supply.
Repair or adjust air supply or filters.
Main Spool sticking
Inject approx. 20 drops of oil into inlet
port to lubricate the main spool. If
spool still sticks, repair at service
facility.
Hoist continues running after
pendant or cord is released
Valve in Pendant Handle stuck Repair at service facility
Hoist drifts excessively when
hoist is stopped
Brake is not holding. Repair brake at service facility.