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Interlift Inc.

15939 Piuma Avenue
Cerritos, CA 90703

Phone: 888-774-5844
Fax: 562-924-8318
Email: [email protected]

ILP - Series

Troubleshooting: ILP – Dual Cylinder Folding Unit

Table of content: 

Page

1) Gate 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 good judgment

Summary of Contents for ILP Series

Page 1: ...te 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 go...

Page 2: ...2 Gate overview Stored position Folding process Unfolded Gate ...

Page 3: ... a Check the valves 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 to both 2 wire release valve harnesses d Connect female end 2 and male end 6 to energize release valves a Gate is lowering down check switch and grey 3 wire harness to switch for damaged spots b Gate is not lowering down a Check both ...

Page 4: ...alves 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 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 raising up check switch and grey 3 wire harness to switch for damaged spots a Gate is not rais...

Page 5: ... control power from on off switch 5 up function 6 down function 4 4 2 2 6 6 5 control wire description ground stud Pump unit 6 down 5 up Release valve x 2 cylinder Control Power hot from fuse 6 down Release Valve 5 up Motor Solenoid Up Down Switch Cab cut off switch ...

Page 6: ...and S2 Release Valve for lowering function R1 and R2 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 ...

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