Rate and displacement pinion-shaft blocks
RESTRICTED
D. Rate and
Displace-
went Pin-
ion Shaft
Blocks (M-6)
E. Tacho-
meter Con-
nection
F. Disc as-
sembly
A. Disassembly and Reassembly
Remove from case, 2 screws for each block.
2.
If
shafts bind.
a.
Tap out taper pins, remove pinions and
shafts, clean with benzine or carbon
tet., lubricate with film of light oil
and
reassemble.
No disassembly is necessary; however.
assembly
must be removed in order to remove the
disc assembly without overcoming the tension of
the thrust spring
Four screws
hold the mounting bracket to the
sight case.
A. Disassembly
1.
and
Remove disc shaft bearing block, 2 screws
a hexagon bolt.
Watch for shim.
taper pin
3: Remove dise shaft from
shaft and collar.
block.
4. Clean
all parts with carbon
tet. Wipe
dry with clean white cloth and lubricate with
film of light oil.
CAUTION:
Never use
an abrasive on the disc.
Oil with film of oil and wipe off
all excess oil.
G. Teles-
cope
Motor
Fig. 45
B.
Reassembly
bearing block on shaft.
2. Replace
collar and taper pin.
3.
Replace block. if a shim is used be cer-
tain
that it is replaced exactly as it was before
removal. Tighten screws and bolt.
A. Disassembly
1.
Remove
armature blocki(field pole shoe).
2. Remove (from outside of case) 2 screws
holding bearing block, commutator end, and 2 screws
Pond, and
holding
field coils.
Remove
telescope motor brushes.
4. Remove
straight pin from governor conn-
ecting rod
and breaker a-m
(governor control con-
shaf t
lever).
screws holding governor hous -
L+ out assembly.
Tap
straighesin from motor armature shaft
and
governor fork.
Remove ge3-.
change speed gear mounting
bracket,
screws
(M-B) .
132