Hale MG - Manual (Page 70)

Muscle Pumps
5-6
J-Series Gearbox
(Refer to figure 6-6)
1. Removal
a. Place apparatus out of service in
accordance with department
procedures.
b. Drain oil, disconnect drive shaft.
Make sure to mark connections for
reassembly.
THE J-SERIES GEARBOX WEIGHS 350 LBS
(159 KG). BEFORE BEGINNING DISASSEMBLY,
PROPERLY SUPPORT GEARBOX WITH LIFTING
GEAR TO AID IN LOWERING GEARBOX AND TO
PREVENT PERSONNEL INJURY.
c. Note the locations and remove eight
1/2-13 cap screws which hold the
upper housing and lower housing
together.
d. Carefully lower the lower gearbox
housing from the apparatus making
sure the spacer (if installed) does not
get damaged. Place a temporary
cover over the gearbox to prevent dirt
and debris from entering the gearbox.
Move gearbox to suitable work area.
e. After the gearbox is removed,
carefully inspect dowel pins, bearings
and other parts for visible signs of
excessive wear or damage. Order
new components from Hale if
replacement is required.
2. Installation
a. Make sure the dowel pins are properly
seated and install new ones if
necessary.
b. Install new gaskets onto the seating
surface of the lower gearbox housing.
Apply a light coat of grease to the
gasket to hold it in place.
c. Install the spacer, if required, and
install a new gasket on the seating
surface of the spacer.
d. Carefully lift the gearbox into place
aligning the dowel pins with the holes
in the upper gearbox housing.
e. Insert the eight 1/2-13 cap screws.
Tighten cap screws to 65 ft-lb (88 N-
m).
f. Connect drive shaft to gearbox.
g. Fill gearbox to proper level with oil.
h. Test operate apparatus observing
mechanical seal, oil seal, and gaskets
for leaks.