c l e a n i n g solvent and dry thoroughly. Be sure that
(f) Straighten any minor dents or bends in
all threaded surfaces are brushed free of any foreign
the metal hood. Seal any cuts or holes in the metal
material. Wipe the rubber washer clean with a soft
hood by brazing. Smooth out the brazed portion
cloth.
a n d repaint where necessary.
(b) Inspect all threaded surfaces for worn
(g) Replace all defective parts that cannot
or damaged threads. Inspect the levers, lever
b e repaired.
s p r i n g s , and washers for burrs and worn surfaces.
(4) R e a s s e m b l y .
Inspect the base for cracks and broken casting.
Inspect the metal collar for bends, breaks, and out
lever (16) with the rough side of the belt next to the
o f round. Inspect the rubber washer to see if it is
h o o d . Loop the belt through the top of the lever.
d a m a g e d or hardened because of age or excessive
I n s t a l l the rivets (18) in the belt mounting holes.
heat.
Install the washers (19) on the rivet ends and peen
the ends.
(b) P o s i t i o n t h e l e v e r s p r i n g ( 1 5 ) i n t h e
(d) Remove all burrs from the base, studs,
lever (16) and secure by installing a lever pin (14)
l e v e r s , lever springs, and metal collar. Straighten
i n the upper mounting hole in the lever.
m i n o r bends in the collar and washers. Replace all
(c) Aline the lower mounting holes with the
d e f e c t i v e parts.
mounting stud on the lower part of the metal hood
(4) R e a s s e m b l y .
(17) and install the second pin (14).
(a) P o s i t i o n t h e d e s i c c a n t c o n t a i n e r p l a t e
(d) Install the second clamp assembly in the
(6) (fig. 3-5) in the bottom of the base (7) and
same manner as described above.
secure with the four machine screws (5).
(5) I n s t a l l a t i o n . I n s t a l l t h e m e t a l h o o d
(b) P o s i t i o n t h e r u b b e r w a s h e r ( 1 1 ) a n d
assembly (2, fig. 2-6) on the base plate. Engage the
collar (12) on the base (7) and secure with the six
lower part of the clamping levers (3) under the
machine screws (13).
flange on the base assembly and snap the upper
(c) I n s t a l l t h e d e s i c c a n t c o n t a i n e r i n t h e
portion of the clamping levers against the metal
base assembly.
h o o d , locking the two together.
(d) Install the lock lever stop screws (8) in
c. Base Assembly.
the base (7).
assembly
(1) R e m o v a l . R e m o v e t h e
base
(e) Position the hooks (2) in the lock levers
( 9 ) and secure each with two machine screws (3).
(2) D i s a s s e m b l y .
(f) P o s i t i o n t h e h o o k s ( 2 ) a n d l o c k l e v e r s
(a) R e m o v e t h e
two
machine
screws
(10,
(9) on the base (7) and secure each with two
machine screws (10).
(2) to the base assembly and remove the lock levers
(5) I n s t a l l a t i o n . Install the base assembly on
and hooks.
t h e theodolite and secure with the base clamps (2,
(b) R e m o v e t h e t w o m a c h i n e s c r e w s ( 3 )
that secure the hooks (2) to the lock levers (9) and
remove the hooks.
3-15. Desiccant Container
(c) R e m o v e t h e l o c k l e v e r s t o p s c r e w s ( 8 )
a. Removal and Partial Disassembly.
from the base (7).
(1) Remove the metal hood and instrument
(d) R e m o v e t h e d e s i c c a n t c o n t a i n e r ( p a r a
from the base assembly (para 3-1). Remove the
desiccant container (5, fig. 2-3) from the base
(e) R e m o v e t h e s i x m a c h i n e s c r e w s ( 1 3 )
assembly (4).
that secure the metal collar (12) and rubber washer
(2) Remove the lower container (6, fig. 3-6)
(11) to the base (7) and remove the collars.
from the upper container (1). Inspect the desiccant
(f) R e m o v e t h e f o u r m a c h i n e s c r e w s ( 5 )
(5) to make sure that it is in good condition.
that secure the desiccant container plate (6) in the
Discard if defective. Remove the inner container
bottom of the base (7) and remove the desiccant
( 4 ) from the upper container (1) and lift out the
container
plate.
window (3) and screen (2).
(3) C l e a n i n g , I n s p e c t i o n , a n d R e p a i r .
(a) Clean all metal parts with an approved
Previous Page
