Removing Front Low-Speed Bearings; Removing Front High-Speed Bearings - York YDHF-39 Manual

Compressor Service

REMOVING FRONT LOW-SPEED BEARINGS

(SEE FIG. 36)
1. Remove the (6) hex head cap screws that hold the
low-speed thrust bearing to the bearing housing, and
using (2) guide pins, remove the thrust bearing. Be
sure not to damage the bearing pads. (See Fig. 37
& 38)
2. Before removing the low-speed thrust collar, mount
an indicator as shown in Fig. 39 and check the runout
of the thrust collar. Maximum runout should not
exceed .001" T.I.R. (It will be necessary to remove
the shaft locking tool in order to take this measure-
ment.)
3. Re-install the shaft locking tool. Remove the socket
head cap screws that hold the low-speed thrust col-
lar to the low-speed shaft, and remove the thrust
collar. (See Fig. 40) Use care when handling so
that surfaces are not damaged.
26439A
FIG. 36 – FRONT BEARING COMPONENTS
22
BEARING
HOUSING
FRONT HIGH-SPEED
BEARING
HIGH-SPEED
SHAFT
BEARING RETAINER
CLIP WITH CAP SCREW
ROLL PIN
LOW-SPEED
THRUST COLLAR
LOW-SPEED
THRUST BEARING
LOW-SPEED SHAFT
FRONT LOW-SPEED
BEARING
4. To remove the low-speed bearing, use (2) hook tools
as shown in Fig. 41. Carefully pull the bearing out
of the bearing housing. Note the position of roll pin.
(See Fig. 42)
On the HF style compressors all low
and high speed bearings use o-rings
on the outside diameter of the bear-
ing. These o-rings should be discarded
and new o-rings installed when reas-
sembling compressor.

REMOVING FRONT HIGH-SPEED BEARINGS

(SEE FIG. 36)
1. Remove the cap screw and retainer clip. (Fig. 42)
2. Using (2) 1/4" puller rods as shown in Fig. 43, pull
the high-speed bearing out of the bearing housing.
FIG. 37 – LOW-SPEED THRUST BEARING
FIG. 38 – LOW-SPEED THRUST BEARING REMOVED
LOW-SPEED
THRUST
BEARING
26335A
LOW-SPEED
THRUST
BEARING
(INSIDE
SURFACE,
MAY BE
FURNISHED
WITH 4 OR 6
PADS)
26334A
YORK INTERNATIONAL