66
TK 56433-5-MM-EN
coupling off the crankshaft as you continuing
turning the center screw in a counter-clockwise
direction. Using this tool will prevent the coupling
from popping off because the center bolt and flat
washer will hold it in place.
Compressor Coupling Installation
(Standard Units)
N
No
otte
e:: If the puller tool 2040991 is unavailable or does
not fit, a suitable commercially available puller
tool can be used.
In a tapered fit joint, the entire twisting load should be
handled by the friction fit between the two tapered
parts. The key is only a backup and is used to index the
parts correctly. When a taper fit is machined and
assembled properly, a key is not needed. In fact, if the
key is not installed correctly, it may be worse than no
key at all. If the key does not fit easily into the keyway,
it will push the tapered components apart and the
reduced friction could lead to slippage and premature
failure.
The following procedure requires the key to be fitted
after the tapers are pulled together with 20 ft-lb (27
N•m) torque. This verifies that the key cannot hold the
tapers apart when the final bolt torque is applied.
Use the following procedure to install a compressor
coupling on the compressor crankshaft:
1. Clean the compressor shaft taper and coupling bore
taper with a solvent that leaves no oily residue
(such as naphtha, lacquer thinner, brake cleaner, or
the like).
Figure 74.
Compressor Coupling Removal Tool
1.
Coupling
5.
10 mm Allen Tool (for large
shaft compressor)
2.
Long Spacers (supplied
with tool)
6.
5/16 Allen Tool (for small
shaft compressors)
3.
Short Spacers
(supplied with tool)
7.
Coupling Removal Tool (P/N
2040991)
4.
Socket Head Bolts
(supplied with tool)
8.
Engine Mounting Flange
2.
Inspect both mating surfaces for burrs, oxidation,
and other surface imperfections. Dress with crocus
cloth if necessary and re-clean as required.
N
NO
OT
TIIC
CE
E
E
Eq
qu
uiip
pm
me
en
ntt D
Da
am
ma
ag
ge
e!!
IIff y
yo
ou
u a
arre
e a
asssse
em
mb
blliin
ng
g a
a u
usse
ed
d cco
ou
up
plle
err o
orr ccrra
an
nkkssh
ha
afftt
a
an
nd
d tth
he
e tto
oo
oll d
do
oe
ess n
no
ott ffiitt e
ea
assiilly
y,, tth
he
erre
e iiss a
a p
prro
ob
blle
em
m
w
wiitth
h o
on
ne
e o
off tth
he
e kke
ey
yw
wa
ay
yss.. D
Do
o n
no
ott rre
em
mo
ov
ve
e tth
he
e
cco
ou
up
plle
err a
an
nd
d p
plla
acce
e tth
he
e kke
ey
y iin
n tth
he
e ccrra
an
nkkssh
ha
afftt kke
ey
yw
wa
ay
y
a
an
nd
d tth
he
en
n d
drro
op
p tth
he
e cco
ou
up
plle
err o
on
n.. IIff tth
he
e tto
oo
oll d
do
oe
ess n
no
ott
ffiitt,, tth
he
e kke
ey
y w
wiillll n
no
ott ffiitt,, a
an
nd
d iitt w
wiillll h
ho
olld
d tth
he
e tta
ap
pe
err iin
n
tth
he
e cco
ou
up
plle
err o
offff tth
he
e tta
ap
pe
err o
on
n tth
he
e ssh
ha
afftt.. C
Ch
he
ecckk b
bo
otth
h
kke
ey
yw
wa
ay
yss ffo
orr b
bu
urrrrss o
orr cco
orrrro
ossiio
on
n.. A
A kke
ey
y cca
an
n b
be
e
cco
oa
atte
ed
d w
wiitth
h ffiin
ne
e lla
ap
pp
piin
ng
g cco
om
mp
po
ou
un
nd
d a
an
nd
d u
usse
ed
d a
ass a
a
lla
ap
pp
piin
ng
g tto
oo
oll tto
o cclle
ea
an
n tth
he
e kke
ey
yw
wa
ay
yss..
3.
U
Ussiin
ng
g n
no
o llu
ub
brriicca
an
nttss, set the coupling on the
crankshaft and align the keyways using the Keyway
Tool (P/N 204-972). Insert the tapered end of the
tool into the keyway and gently move the coupling
on the shaft while pressing the tool into the keyway.
This will align the keyway in the crankshaft with the
keyway in the coupler.
