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 cracks
and
for
damaged
paint.
Check operating shaft (A)
for straightness and make sure shaft pawl (D) swings freely
on
its
mounting
rivet
(C).
Check threads on bolts and nuts
of pickup member. Replace cable (par. 70c) if any broken
strands
are
apparent.
Tighten
U-bolts
if
loose
or
cable
has
Main
member
can
be
reshaped
if
bent
but
been replaced.
should be replaced if it cannot be returned to f reel y-working
If ratchet on operating shaft is broken or dam-
condition.
If
shaft
pawl
does
not
swing
aged,
replace
operating
shaft.
freely,
replace
(e
below)
pawl.
Replace
bolts
or
nuts
which
have seriously damaged threads.
e. Assembly. Position shaft pawl (D) on main member (F)
Insert operating shaft through
and
secure
with
rivet
(C).
main
member
(F)
and
secure
with
1/8
x
1
cotter
pin
(B).
Install
cable
(par. 70c) of rope assembly (E) in operating
Position ferrule end of rope assembly (E) on
shaft
(A)
.
pickup
number
(H)
and
install
two
U-bolts
(R)
over
cable
of rope assembly (E).
Secure each U-bolt with two -inch
lockwashers and two -inch hex nuts. Wind rope assembly
( E ) i n t o o p e r a t i n g s h a f t ( A ) . Install two wheel securing studs
(J) and two safety nuts (G) on pickup member
(H).
f. Installation. R e f e r t o p a r a g r a p h 7 0 b .
103. Chock Blocks
(fig. 14)
File or grind off deformed threads at end
a. Disassembly.
of four carriage bolts which secure laminae of block and re-
move four plain nuts from bolts. Withdraw bolts from lam-
mae. If bolts turn in block while unscrewing nuts, force screw-
driver or chisel between laminae to bind and hold bolts.
b. Cleaning. Use water and stiff brush to remove dirt. Use
mineral
spirits
paint
thinner
or
dry-cleaning
solvent
to
remove
grease.
Inspect
attachment
of
chain
to
c. Inspection and Repair.
frame to make sure it is secure and that snap is free to turn
on screw.
Check chain for damage which may result in break.
Check
block
for
serviceability.
Tighten
attachment
to
frame
if loose and adjust if necessary, to allow snap to turn freely.
Replace damaged link in chain with chain repair link. Re-
paint any part which may be bare or on which paint is dam-
aged.
Assemble
laminae
and
secure
with
four
carri-
d. Assembly.
age bolts and four 5/16-inch plain nuts. Peen bolt ends over
nuts. If old bolts are too short to allow peening of bolt end
after nut is installed, replace with new bolts.
TAGO 1321B
153
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