Wipaire Wipline 3730, Руководство по обслуживанию и инструкции

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SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
P/N 1002551 Revision K Page 49
Remedy:
a. Verify leak is not external by checking fluid level in reservoir and looking at couplings for oil leaks—then
disconnect and cap off hydraulic actuators one at a time, and find the leaky one by process of elimination. If
isolating entire system still indicates internal leak, powerpack check valve (located in pressure part of pump) is
bad and needs replacement
b. Visually inspect lines, cylinders and hoses and replace as necessary.
PROBLEM – Powerpack cycles on and off during gear cycle.
Probable cause:
a. Binding retraction unit.
b. Pressure switch cut off limit too low.
Remedy:
a. Investigate for free operation gear that retracts last.
b. Replace pressure switch.
6. PROBLEM – Slow gear operation cycle (considerably longer than 23 seconds).
Probable cause:
a. Plugged oil screen.
b. Poor electrical connection to motor.
c. Poor motor.
d. Worn pump gears.
Remedy:
a. Clean intake screen located inside reservoir tank.
b. Connect motor direct to 24-volt source and note its operation—if good, wire connection is bad---if operation
poor, motor needs overhaul.
7. PROBLEM – Circuit breaker pops during cycle.
Probable cause:
b. Wire connections bad or corroded.
c. Motor brushes are bad.
Remedy:
a. Clean and protect terminals with insulating grease.
b. Overhaul motor.