92
TK 61555-2-MM-EN
keyway with a light press fit requiring only a minimum of light tapping. If the key does not fit
properly, remove the coupler and inspect the keyways and key for burrs or other problems.
Recheck the fit as shown above.
5.
When the key fits properly, remove the coupling and key from the shaft.
6.
Re-install the coupling and align the keyways with the Keyway Tool.
7.
D
Do
o n
no
ott iin
nsstta
allll tth
he
e kke
ey
y a
att tth
hiiss ttiim
me
e. Install the flat washer and bolt and pre-torque to 27 N•m
(20 ft-lb). Remove the bolt and washer.
8.
Install the key in the keyway. As above, it should fit with a light press fit requiring only a
minimum of light tapping. D
Do
o n
no
ott iin
nsstta
allll tth
he
e kke
ey
y iin
ntto
o tth
he
e kke
ey
yw
wa
ay
y b
be
ey
yo
on
nd
d tth
he
e ffrro
on
ntt ffa
acce
e o
off
tth
he
e cco
ou
up
plliin
ng
g. If tapped in farther, it may cause the coupling to move off center on the shaft.
Figure 69.
Compressor Coupling Installation
1.
Compressor Coupling or Clutch
2.
Key tapped flush with outside face of coupling. Do not tap key any farther into keyway.
3.
Torque bolt to 122 N•m (90 ft-lb)
4.
Washer
5.
Spray this area with corrosion inhibitor after assembling.
9.
Re-install the bolt and heavy flat washer and snug the bolt down by hand. Torque the bolt to
122 N•m (90 ft-lb).
10. Spray a corrosion inhibitor (such as spray paint) on the exposed part of the shaft and the
joint between the shaft and the coupling. This prevents moisture from wicking into the joint
and causing corrosion.
Compressors with Pressurized Seal Cavity
Starting in the first quarter of 2017, the pressurized seal cavity was phased into use on large shaft
four cylinder compressors. Compressors with a pressurized seal cavity can be identified by the
“P” on the seal cover as shown (
). The model number of the compressor has
been changed to X430P or X426P to signify the Pressurized Seal Cavity as shown (
). The pressurized seal cavity uses a new compressor seal with a hex drive and a new
crankshaft with a hex drive collar. See
“Hex Drive Compressor Seal Replacement,” p. 93
for the
replacement procedure.
