Disassembly and Reassembly
42
4. Apply clean compressor oil to the O-ring
inside the bellows. Slide the bellows on the
crankshaft, align the drive tangs with the drive
flats, and then push the bellows firmly against
the crankshaft shoulder.
5. Remove the yellow protective cap. Clean the
hard ring and the primary ring (bronze ring)
with the alcohol wipes found in package
labeled “1”. Then clean the polished mating
surfaces of both rings with the lint free dry
wipes from package number “2”. Apply clean
compressor oil to the polished surfaces of the
seal, the lip seal, and the seal plate gasket
from the package number “3” before
assembling.
6. Install the seal plate and gasket to the
compressor body. Do not bump the seal hard
ring on the end of the crankshaft during
assembly.
7. Install the seal plate mounting bolts and
washers. Torque the seal plate bolts in two
steps using a criss-cross pattern. See “Torque
Values” on page 24.
Installation of Metal Bellows Seal
With Hex Drive
In the first quarter of 2014 a pressurized seal
cavity was phased into use on large shaft
compressors. The pressurized seal cavity uses a
new seal with a hex drive and a new crankshaft
with a hex drive collar. The replacement
procedure follows:
1. Install the new lip seal in the seal plate with
the lip side facing out and the flat side facing
toward the compressor.
1.
Yellow Protective Cap
2.
Drive Tang
Figure 47: Cross Section of
Drive Tang Type Bellows
1.
Drive Tang
2.
Seal Faces
3.
Hard Ring
4.
O-ring
5.
Bellows
Figure 48: Drive Tang Type Bellows Seal
1
2
AGA579
2
4
3
5
AGA581
1
CAUTION: Oil applied to the seal faces
must be absolutely clean.
1.
Lip Side Facing Out
2.
Flat Side Toward Compressor
Figure 49: Lip Seal Installation
1
ARC010
2
