Interlift ILR Series Troubleshooting Manual Download Page 4

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Interlift Inc.

Phone: 888-774-5844 

Fax: 562-924-8318
Email: [email protected]

ILR

Series

1) GATE DOES NOT LIFT UP

1.1) Check Battery Power

a)

Check if Cab Cut of switch is pulled out – “ON” position

b)

Check resettable Circuit Breaker on top of batteries 

Æ

Push Reset Tab back in, if popped out

b)  Check fuse at pump & motor (qty 1) in box for hydraulic power unit 

c) 

Start truck and run engine in fast idle for charging the battery

Æ

if lift gate starts working, recharge batteries

Æ

test batteries and truck/trailer charging system

d)  Check for a solid ground connection from the motor post to box of hydraulic power unit

1.2) Check controls 

a)

Check the valve visually for mechanical damage – bent or damaged ??

b)

Open up Lid at hydraulic power unit and unplug cable #2 at black 3 wire harness.

c)

Jump female end #2 to small positive connector (switch cable #5 attached) on motor solenoid.

WARNING – Do not stay between platform and truck body – gate will raise up 

d)

Gate is lifting up – check switch and grey 3 wire harness to switch for damaged spots

a)

Gate is not raising up 

a)

Check motor solenoid for proper function – hear clicking??

a)

No clicking – motor solenoid  or thermo switch at motor is bad

b)

Hear clicking – check for voltage on both big positive studs to ground

a)

Voltage – solenoid is ok

b)

No voltage – solenoid is not connecting internally – bad solenoid

b)

Motor solenoid is ok 

a)

Check for power on large positive motor stud

a)

Have power – bad motor, bad brushes or ground

b)

No power at motor stud – Check connection to solenoid

Summary of Contents for ILR Series

Page 1: ...ate overview 2 2 Gate does not lower down 3 3 Gate is not lifting up 4 4 Electrical schematic 5 5 Hydraulic schematic 6 Tools needed 1 Voltmeter 2 Test light 3 8 jumper cable 16ga or smaller 4 Screw driver flat head 5 13mm 1 2 wrench MAKE SURE YOUR BATTERIES ARE FULLY CHARGED AND IN GOOD CONDITION Always use CAUTION and allow SAFE distance from moving parts Practice SAFETY using common sense and g...

Page 2: ...2 Stored position Gate overview Unfolded gate Folding process ILR Series ...

Page 3: ...eck controls a Check the valve visually for mechanical damage bent or damaged b Open up Lid at hydraulic power unit and unplug red cable 2 with the inline fuse c Unplug cable 6 at 2wire release valve harness to toggle switch d Connect female end 2 and male end 6 to energize release valve a Gate is lowering down check switch and grey 3 wire harness to switch for damaged spots b Gate is not lowering...

Page 4: ...lve visually for mechanical damage bent or damaged b Open up Lid at hydraulic power unit and unplug cable 2 at black 3 wire harness c Jump female end 2 to small positive connector switch cable 5 attached on motor solenoid WARNING Do not stay between platform and truck body gate will raise up d Gate is lifting up check switch and grey 3 wire harness to switch for damaged spots a Gate is not raising...

Page 5: ...5 Electrical schematic ILR Series ...

Page 6: ...wering function R1 Flow Restrictor located inside hose adaptor on lift cylinder R5 Restrictor Valve located in power pack Flow Divider is activated when fluid is going back into the power pack If Flow Divider is loose or hanging up the fluid is circulated back in to tank Access for pressure gauge Hydraulic schematic ILR Series ...

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