Hale 4DK Series - Manual (Page 27)

Manual p/n: 029-0020-79-0 27
4DK Series Pumps
7. Remove the remaining bearing cone out of
the housing. (See Figure 10: "Input Shaft
Assembly" on page 26.)
8. Tap out bearing cups and remove outer
spacer.
9. Using retaining ring pliers, remove the
retaining ring from the gearbox housing.
Inspection
1. Clean bearings and other components
using parts cleaner.
2. Carefully inspect bearings and seals for
signs of excessive wear.
The tapered roller bearings, shims and
spacers are a matched set and must be
replaced as a unit. Order a new set using
Hale p/n: 250-8140-51-0.
3. Obtain new components from Hale
Products as appropriate.
Reassembly and Installation
See Figure 10: "Input Shaft Assembly" on
page 26.
1. Using retaining ring pliers, install the
retaining ring into the gearbox housing.
2. Insert the outer bearing spacer and press
the outer bearing cup into place.
Should the outer bearing spacer be con-
fused with that of the tail shaft assembly,
the one used in the bearing carrier assem-
bly is noticeably thicker.
3. Tap the inner bearing cup into place. Tap
evenly around circumference to prevent an
uneven fit.
4. Press the roller bearing outer race onto the
input shaft.
5. Insert the input shaft partially through the
bearing cover bore and install the needle
bearings, shift collar, input gear, and
bearing cone onto the shaft.
6. Insert the input shaft into the housing until
the bearing cone contacts the bearing cup.
7. Install the inner bearing spacer and shims
onto the input shaft and press the remain-
ing bearing cone onto the input shaft.
8. Carefully press the oil seal into the
housing.
9. Secure the input yoke onto the input shaft
using the washer and 3/4-10 x 1-3/4"
screw. Torque to 260 ft.-lb (350 N-m).
10. Install the tail shaft and gearbox cover.
KPS SHIFT CYLINDER
See Figure 11: "KPS Shift Cylinder Assembly" on
page 28.
Removal
1. Pull the shift rod into PUMP position (out).
Loosen 3/8-16 nut and remove rod end
and nut from end of shift shaft.
2. Unscrew four 5/16-18 x 1" screws holding
down KPS cover.
3. Remove cylinder cap and seal O-ring.
4. Using a seal pick, remove scraper and seal
ring from the KPS cap.
5. Unscrew KPS extension shaft.
6. Remove KPS piston from shaft then re-
move seal rings.
7. Unscrew two 7/16-14 x 1" screws then
remove KPS cylinder and gasket.