WIPLINE MODEL 8000 SERVICE MANUAL
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are closed when the piston containing the magnetic material has reached either end of
its travel.
The nose gear consists of composite fiberglass beams that are attached at the bottom
to castering blocks. Inside the block is a castering pin that is set into the machined fork
assembly. The castering pin allows the nose wheel to pivot in a complete circle. The
geometry is such that no shimmy dampers are necessary.
A spring loaded cam rides in a
groove machined in the castering pin.
This groove as a flat surface on the back face with
the result that the cam provides retention of the pin the block and self-centering of the
wheel.
5.1.1 SERVICE – NOSE GEAR
The nose gear pivot assembly should be cleaned and inspected every 25 hours or
more frequently whenever in water for extended period of time, especially saltwater.
Nose gear tracks that are the older style gold track and white block are to be lightly
greased. Apply grease to a cloth on a stick or rod and run along tracks inside of the
nose box, both sides. Newer track and block that are black should be cleaned and left
dry or alternately cleaned and wiped with a rag with dry silicone spray on it.
The nose wheels contain grease nipples for the wheel bearings. They should be
greased every 25 hours.
Nose tires are standard 5:00 x 5, 10-ply, inflated to 60 +/- 5 psi.
5.1.2 SERVICE – MAIN WHEELS AND BRAKES
Grease nipples are provided on all wheels and bearings and should be greased every
25 hours or after an extended period of time in the water. Water/heat resistant grease
is recommended and it is important as with any aircraft operations not to mix types of
products.
The dual piston brakes need no special care other than to maintain the brake disc free
of rust, which causes premature brake lining wear. Bleeding is carried out in the usual
manner from the bottom up.
Main wheel tires are standard 6:00 x 6, 8-ply type III aircraft tires, inflated to 45 +/- 5 psi.
(Refer to figure 5-5)
5.1.3 SERVICE – MAIN GEAR OLEO
OIL LEVEL
- The correct level is best set by draining and refilling with the correct
quantity of fluid (1140 ml). This should be done with the oleo removed from the float,
which process is outlined in Section 5.2.
CAUTION:
Release air pressure and remove
air valve before attempting to service oleo. After filling, refit valve and cap, then
pressurize to 210 psi. (Note: Use only MIL-H-5606 hydraulic fluid.)