Arch centering device option
: p/n 75000-220
19
Torsion
Spring.
75000-427
- Arch Centering Option (75000-220) is a kit that will bring arch to a
home position when swung to either side of home. Maximum articulation
for this option is
180 degrees, 90 degrees one direction 90 degrees
the other direction, no exceptions
. To install requires removal of arch.
- First remove pole access cover and bracket access cover. Remove
swivel fitting from end of arch pipe (page 16) and stop collar on arch if
one is installed. Remove suction hose from end of arch.
- Using tall step ladder placed at middle of arch lift arch straight up and
remove from bracket.
Two people required!!
- Remove two bracket mount nuts and washers on open side of main
bracket, place Spring Centering Base (75000-426W) over mounting bolts
and replace washers and nuts, torque bolts to 30 ft*lbs.
- Using WD-40 or similar rust inhibitor coat spring prior installation.
Primary purpose is to prevent rust, secondary is lubrication.
- Place torsion spring (75000-427) centered over bushing on inside of
bracket. Replace arch carefully
(two people required),
keep arch
relatively straight to prevent damage to bushings. Replace stop bolt,
washer, and spacer on top of bracket.
- With spring now captured over arch and Spring Centering base in place
you can proceed to spring preloading on next page.
Temporarily remove
these two nuts and
washers to install plate.
Stop bolt,
washer and
spacer.
Spring Center
Base. 75000-426W
REV 12-1-20
Содержание 75000-SWL Series
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