Hale 4DK Series - Manual (Page 28)

28 Manual p/n: 029-0020-79-0
4DK Series Pumps
8. Remove seal ring from shift cylinder.
9. Remove and check bushing for wear.
Replace accordingly with Hale p/n: 250-
9550-00-0.
Installation
See Figure 11: "KPS Shift Cylinder
Assembly."
1. Install new seal ring in cylinder groove.
2. Using a light coating of general-purpose
grease to hold it in place, install gasket on
gearbox.
Align KPS cylinder and secure using two 7/
16-14 x 1" screws.
3. Apply a light coating of general-purpose
grease to seal rings before installation.
Install a new seal ring on the piston then
install piston on shaft. Make sure the flat
side of the piston is towards the inside of
the cylinder.
4. Thread extension shaft onto shift rod. Prior
to installation, coat threads with Loctite 246
(or equal).
5. Make sure the piston and shaft move freely
in the shift cylinder.
6. Apply a light coating of general-purpose
grease then install the scraper and seal
rings in the KPS cover.
7. Install KPS cover with scraper and seal
rings over the shaft.
8. Apply Loctite 246 (or equal) then install
four 5/16-18 x 1" screws.
9. Install rod end and 3/8-16 nut on end of
shift shaft. Lock the rod end with the nut.
Figure 11: KPS Shift Cylinder Assembly
Rod End
Lock Nut
Extension Shaft
Spacer
Seal Rings (3)
Piston
Cylinder Cap
Screws (4)
5/16-18 x 1"
Shift Cylinder Air Inlet Port
1/8" NPT
Gasket
Bushing
Seal Ring
Screws (2), 7/16-14 x 1"