Wipaire Wipline 2100, Руководство по обслуживанию и инструкции

Страница: 41 / 70

SERVICE MANUAL & ICA
WIPLINE 2100 & 2350 FLOATS
P/N 1002549 Revision N Page 41
The older style, non-repairable units can be identified by the stainless steel (shiny) outer cylinder with non
removable aluminum end caps. If these units leak or will not hold pressure they should be replaced with new
units. The new units will be the repairable type. The sealed units can also be upgraded to the repairable type at
any time in accordance with Service Letter #97.
Repairable units: All new products will have the repairable type cylinders. These can be identified by their all
aluminum construction and grey color. These units can be disassembled and repaired according to the following
instructions.
Repair Kits include all replacement O-rings and Quad-rings, and Rod Wiper
2000 Series Floats
Cylinder Part Numbers Repair Kit Number
Nose: 1002571 1002578
Main: 1002574 1002578
If servicing beyond the usual cleaning and inspection, use Section 6 & 7 & 8 to remove the main and nose gears
respectively. Once cylinders are removed from the floats:
1. The end caps must be removed; they are secured with medium strength Loctite. Always clamp the tube in such
a way as to not damage or deform the outer cylinder.
2. Once the end caps are removed, remove the rod and piston from the main cylinder.
3. Remove the two quad rings off the piston, then remove the O-rings off the end caps.
4. Remove the two O-rings from the front rod end cap located on the inside portion of the rod end cap and the
plastic wiper ring. All parts must be thoroughly cleaned of any residue of Loctite and hydraulic fluid.
NOTE: Be sure to look at all seals closely so they can be re-installed correctly.
Reassembly
1. To reassemble, first make sure you are using Mil-H-5606 hydraulic fluid and pre-lubricate all the new quad and
O rings (not the wiper) with it.
2. Thread the end cap onto the cylinder tube a couple threads. Waiting to add a drop of medium strength Loctite
until this point helps to keep it from contaminating the cylinder. Then finish carefully tightening the end cap.
3. Following that, slide the piston down into the cylinder being careful of the quad rings Check the top of the
cylinder when this is done for flakes of rubber to indicate any damage from installation.
4. Clean the threads and install the quad rings into the rod end cap.
NOTE: Make sure that quad rings are not twisted and are seated in the grooves. If they are compromised
in any way, they will not seal or hold pressure properly.
5. Install the new seal ring and lubricate all the quad and O-rings with hydraulic fluid and insert the threaded end
of the rod, making sure of the end of the rod is clean and free of any sharp edges that will damage the quad ring.
6. Once this is slid past the flats in the threaded ends, check again for any evidence of seal damage by looking
for flakes of rubber. If there is ANY damage to any of the seals, they must be replaced.
NOTE: When sliding the rod end cap over the threaded rod, SLOWLY work the rod end cap down on the
rod; you should feel the rod pass thru each quad ring.
7. Thread the rod end cap into the cylinder tube. Start threads and then add a drop
of Loctite on the remaining threads and tighten both ends.
8. On the main gear actuators, the in and out fittings must be indexed so that they face approximately the same
direction. If adjusted, add or remove shims under the end cap.