Hale 4DK Series - Manual (Page 30)

30 Manual p/n: 029-0020-79-0
4DK Series Pumps
2. Align the gearshift shaft cap. Apply Loctite
246 (or equal) and install two 7/16-14 x 1"
screws.
3. Install the detent ball and spring. Secure
using 1/2-20 x 1/2" setscrew.
4. Place detent ball into gearshift cap. Install
gasket, bracket, and switch onto cap using
two #10-32 x 1/2" screws. Prior to installa-
tion, coat threads with Loctite 246 (or
equal).
5. Thread 1/8"NPT air vent into the port
labelled NC on shift switch. See Figure 13:
"Shift Switch Detail" on page 29.
6. Reconnect electrical control /pneumatic
connection.
GEAR SHIFT FORK
Removal
1. Remove gearbox cover, tail shaft assem-
bly, input shaft assembly, KPS cylinder,
and KPS shift switch.
2. Release the gearshift fork by unscrewing
the shift fork screw.
3. Pull the shift-shaft from the gearbox and
remove gearshift fork from inside the
gearbox.
4. Drive shift shaft bushings out of gearbox
housing, if necessary.
Installation
1. If necessary, press shift shaft bushings into
gearbox housing.
2. While holding the shift fork in place, insert
shift shaft into gearbox housing by sliding
shaft through the shift fork.
3. Install shift fork screw. This is a specialty
screw that cannot be substituted with
standard hardware. Contact Hale for
replacement part, p/n: 018-8350-00-0.
4. Install KPS shift switch, KPS cylinder, tail
shaft assembly, input shaft assembly, and
gearbox cover.
IDLER SHAFT
See Figure 14: "Idler Shaft Assembly" on page
31.
Removal
1. Remove the gearbox cover, tail shaft, KPS,
and input shaft.
2. Remove 1/2-13 x 1-1/2" screw and brass
washer.
3. Insert a brass drift or similar into the 1/2-13
tapped hole and tap the idler shaft out of
the gearbox housing.
4. Remove idler gear assembly and spacer
from gearbox housing.
5. Begin disassembling the idler gear assem-
bly by removing the bearing cups, shims,
and inner spacer.
6. Next, tap the bearing cones from the idler
gear. Take care not to damage the gear.
7. Using retaining ring pliers, remove the two
retaining rings from the idler gear.
8. Remove O-ring from idler shaft.