Hy-Security SwingRiser 14, Инструкция по установке и справочник

Страница: 65 / 86

Installation and Maintenance Manual
55
Reshimming the Bearings
To add shims, you need to order the Shim Kit. It includes four 0.020 and four 0.060 shims. Refer to the
HySecurity
Price Book for the appropriate part number.
Important aspects to consider when you are shimming bearings:
One half of the bearing is usually worn more
than the other. Use different shim thicknesses
(0.020 or 0.060) to keep the inner tube
centered inside the post.
The weld seam inside the post may prevent the
shim from sliding behind the bearing cleanly. If
this happens, cut 1-inch out of the middle of a
shim and install the two slotted pieces on each
side of the weld.
To install shims, take the following steps:
1. To access the upper bearing, close the gate.
2. Turn off the
gate operator’s power source. This
ensures that the gate will not move while you
are installing the shims.
IMPORTANT: Measure the thickness of the
material remaining in the upper bearing. Be
sure to measure the thinnest portion of the
bearing. If the thickness is ¼-inch or less,
do
not use the shims. Instead, replace both the
upper and lower bearings. See Replacing the
Bearings.
3. Use a jack screw to lift and block the gate
panel. This transfers the weight off the
bearings.
4. Loosen, but do NOT remove the four screws in
the outer post that secure the worn portion of
the bearing. There are four ¼-20 tapped holes
adjacent to the screws. Bolts (¼ - 20) may be
screwed into these holes to aid in adjusting the
gap while shimming.
5. Make a shim packet with 0.060 and 0.020
shims and close the gap tolerance to under
0.020 of an inch. Use a feeler gauge to
measure the gap.
NOTE: The weld seam inside the post may
prevent the shim from sliding behind the
bearing. If this happens, cut 1-inch (25mm) out
of the middle of a shim and install the two
slotted pieces on each side of the weld.
One
inch
cutout
Standard 0.060 Shim
Maintain a consistent
gap of 0.020" (0.5mm)
around diameter of
inner tube.
Add shims to
worn bearing
and close gap
around inner
tube.
A B
Weld seam
Hinge
¼ - 20
tapped
holes