TM 11-5840-360-14-1-1
7. Replace resolver B2 by reversing the preceding
5. Remove two lock nuts which attach rotary joint
steps.
assembly to rotary joint mounting plate and carefully
withdraw rotary joint.
8. Align per paragraph 5.11.3.1.
6. Replace rotary joint assembly by reversing the
5.11.2.4 Data Unit Assembly. - See Figures 5-4 and 5-6;
preceding steps.
refer to assembly drawings in Chapter 6, Section 6.3 as
necessary .
CAUTION
THE TOP OF THE ROTARY JOINT
1. Insure power is removed from pedestal per
ASSEMBLY CONTAINS TWO GUIDE
PINS HOLE5. HEN REPLACING THE
2. Gain access per steps 2, 3 and 4 of paragraph
ASSEMBLY, INSURE THAT THESE
HOLES ARE MATED WITH THE PINS
3. Remove Rotary Joint assembly per paragraph
ON THE BOTTOM OF THE ARRAY
BE FORE TIGHTENING THE LOCK
4. Using a common pencil, scribe the point of
NUT5.
mesh between the data gear on the Data Unit assembly
5.11.2.6 Reed Switch Assembly. - See Figures 5-4 and
and the drive gear.
5. Remove the two hex bolts which hold the Data
6.3 a s necessary .
Unit assembly; withdraw the assembly as far as possible
1. Insure power is removed from pedestal per
without stressing the harness wires.
NOTE:
2. Gain access per steps 2, 3 and 4 of paragraph
Disconnect the wires listed in steps 6
and 7 only if it is necessary to re
3. Remove rotary joint assembly per paragraph
move the Data Unit assembly
completely; if the task being
4. Remove data unit assembly per paragraph
performed can be accomplished by
moving the assembly within the
5. Using a grease pencil, scribe radial alignment
range of the harness do not
marks on the data gear and the shaft end which extends
disconnect the wires.
through the data gear.
6. Disconnect the eight harness wires from
6. Loosen the screw in the hub clamp and slide the
resolver B2, tagging each for connection terminal.
clamp and data gear from the shaft.
7. Disconnect two harness wires from bottom of
7. Carefully note the position of the reed switch
reed switch standoff terminals, noting connection points.
glass envelope with respect to the mounting posts; note
8. Replace Data Unit assembly by reversing the
particularly the method by which the switch leads are
preceding steps, insuring that scribe marks on data and
attached to the posts and dressed. When installing the
drive gears are aligned when the assembly mounting
new reed switch, locate it in as nearly the same position
bolts are installed.
as possible.
9. Align per paragraph 5.11.3.1.
8. Disconnect switch leads from mounting posts
5.11.2.5 Rotary Joint Assembly. - See Figure 5-4; refer
and remove switch.
to assembly drawings in Chapter 6, Section 6.3 as
9. Rotate the glass envelope of the new reed
necessary .
switch to orient the reeds as shown in the detail of
1. Insure power is removed from the pedestal per
Figure 5-6. Maintaining proper reed orientation, position
the switch as noted in step 7.
2. Gain access per steps 2, 3 and 4 of paragraph
10. Leaving sufficient lead length free to permit
slight positional adjustment of the switch, attach and
3. Remove the screw, washer and lock washer
solder switch leads to mounting posts.
which secure the anti-rotation plate to its mounting post.
11. Slide the data gear and hub clamp onto the
4. Disconnect wire from brush assembly (mounted
shaft until the gear contacts the retaining ring. Hold the
on anti-rotation plate).
shaft coupling and turn the gear to align the scribe
CAUTION
marks on the gear and shaft end, then tighten the hub
DO NOT ALTER SETTINGS OF
clamp screw.
SPRING TENSION ADJUSTMENT
12. Connect a multimeter, set for R x 1 resistance
SCREWS
ON
ROTARY
JOINT
measurement, between terminals 10 and 13 of T B 1.
MOUNTING
PLATE.
THESE
13. Rotate data gear to pass magnet slowly back
SCREWS ARE FACTORY SET AND
and forth across reed switch. If switch closure is
SHOULD NOT BE ADJUSTED IN THE
indicated on multimeter, proceed to step 15; if not
FIELD.
perform step 14.
5-30
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