FILM-INSTRUCTION 3356210 - Caterpillar

Do not check for leaks with your hands. Pin hole (very small) leaks can result in a high velocity oil stream that will be invisible close to the hose. This oil can penetrate the skin and cause personal injury. Use cardboard or paper to locate pin hole leaks.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations and mandates.
Check the control box for power.
Check the control box for loose mounting hardware.
Check the control box for the proper function of the indicator lamps before filling the fluids.
Check the fill ports at the control box for damaged fittings and/or leaking fittings.
Check the line connections at the control box for damage and/or leaks.
Check the lines from the control box to the reservoirs for damaged lines and/or leaking lines.
Check the line connections at the reservoirs for damage and/or leaks.
Check the sensors in the reservoirs for damage and/or leaks.
Check the wiring for the sensors for the following conditions:
Loose connections
Broken wiring
Damaged insulation
Frayed wiring
Check the wiring at the control box for the following conditions:
Loose connections
Broken wiring
Damaged insulation
Frayed wiring