Trinity Highway INGAL SS180 M, Assembly Manual

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trinityhighway.com 35 Revision A November 2019
Hydraulic System Priming
SS180
®
M hydraulic systems come direct from the factory primed and ready to operate. Priming
should only be necessary after changing the oil or if you have recently repaired a leak.
1. Priming Process
Systems that have been disassembled for repair require priming for proper performance. The
hydraulic system is said to be primed when all hoses and the cylinder are full of oil and the air
has been expelled. The reservoir will be full of oil (oil just visible at the filler port) when the TMA
is FOLDED. Prime the pump as follows:
A. Detach the long hoses where they connect to the cylinder. Note which hoses connect to
the top and bottom of the cylinder.
B. Jog and pump by briefly depressing the “UNFOLD” button until clean oil flows from two of
the hoses.
C. Repeat this process for the other two hoses by briefly depressing the “FOLD” button.
D. Replace and retighten all four hoses.
Caution:
Do not completely fold or unfold the TMA until it has been jogged a few
times to work out any air in the system. Add oil at the filler port any time that the
pump begins to cavitate.
E. Jog the system a few times by depressing “FOLD” or “UNFOLD” depending on the current
position of the TMA.
2. Check for These Problems When a System Fails to Prime
Correct pump mounting, with the motor on top and reservoir at the bottom. Every SS180
®
M
has vertically mounted pumps. Mounting the pump in some other orientation will prevent the
suction line from picking up oil and cause cavitation.
Note:
Vertical mount pumps have a label stating such designation.
A solid plug in the reservoir filler port instead of a vent plug (See Reservoir section).
Reservoir
Important:
Do not use a solid plug or fill cap without a filter/breather element, or
damage will be caused to the pump and/or reservoir.
1 Use Recommended Fluid:
Fill reservoir with Dexron™ III only (See Hydraulic Fluid section).
2 Proper Filling:
A. With the TMA FOLDED (cylinder fully retracted), fill the reservoir so that oil can just be
seen in the filler port.
B. Operate the unit several times starting with short cylinder strokes (in the folded position
only), increasing the length of each successive stroke.
C. Recheck oil level often and add as necessary to keep the pump from picking up air.
D. Reinstall the filter/breather plug provided.