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Compressor Service
RE-ASSEMBLY OF THE EYE SEAL
(HA, HB, HD Style Compressors)
1. Inspect all parts before re-assembly. See "Clean-
ing and Checking Wearing Parts", page 6. Re-
place with new parts as necessary.
2. Be sure the helical springs are securely locked in
pockets. Give each spring a clockwise twist to lock
it into place. Install a new o-ring in the eye seal
retainer.
3. Place the eye seal ring and retainer into position on
the nozzle base plate. Be sure the hole in the eye
seal ring fits over the roll pin in the nozzle base plate.
(See Fig. 66). Insert cap screws and tighten. Check
that the seal ring is free to "float".
(HF Style Compressors)
This style compressor uses a flat spring
washer instead of the helical springs
used on the HA, HB, and HD style
compressors. (See Fig. 65 – HF Eye
Seal)
1. Inspect all parts before re-assembly. See "Clean-
ing and Checking Wearing Parts", page 6. Re-
place with new parts as necessary.
2. Place flat spring washer into retainer and position
eye seal over spring washer.
3. Take complete eye seal assembly and position on
nozzle base plate. Insert cap screws and tighten.
Check that seal ring is free to "float".
FLAT SPRING
WASHER
IMPELLER EYE
SEAL RETAINER
FIG. 67 – HF EYE SEAL
34
RE-ASSEMBLY OF NOZZLE BASE PLATE
1. 1. Install a new o-ring on the nozzle base plate.
(See Fig. 65)
2. Carefully turn the nozzle base plate over and insert
eyebolts into the (2) tapped holes.
3. Insert guide pins into (2) of the holes in the scroll
housing.
4. Using proper rigging methods, lower the nozzle base
plate over the guide pins and into position in the
scroll housing. Remove eyebolts and guide pins; in-
sert cap screws and tighten to specified torque in
Table 4.
RE-ASSEMBLY OF SCROLL HOUSING
TO ROTOR SUPPORT
1. Using proper rigging methods, lift scroll housing as-
sembly into place on unit base.
2. Using new gaskets, re-connect suction and dis-
charge piping.
3. Insert guide pins into the scroll housing and install a
new gasket. Note that the gasket contains three
holes to clear the jacking screws in the rotor sup-
port. Be sure gasket is installed correctly. (See Fig.
68). Coat gasket with a mixture of oil and graphite.
IMPELLER
EYE SEAL
CLEARANCE
HOLES FOR
JACKING SCREWS
00592VIP
FIG. 68 – SCROLL HOUSING READY FOR
On the HF style compressors this seal-
ing surface uses an o-ring instead of a
gasket. Coat the o-ring with a suitable
o-ring lubricant to secure o-ring into
groove during assembly.
RE-ASSEMBLY TO MOTOR SUPPORT
YORK INTERNATIONAL
26301A
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