Hale MG - Manual (Page 79)

Muscle Pumps
5-15
F. Impeller Assembly
1. Impeller and Clearance Rings Removal
(Qmax (refer to Figure 6-3 and Qtwo
Pumps (Refer to Figure 6-4)
a. Park the vehicle on a level surface.
Shut down the engine. Set the parking
rake and chock the front and rear
wheels.
b. Drain the water from the pump.
THE GEARBOX ASSEMBLY WEIGHS 500 LBS
(228 KG). SUPPORT THE LOWER GEARBOX
ASSEMBLY WITH A LIFTING DEVICE.
FAILURE TO DO SO COULD RESULT IN THE
ASSEMBLY FALLING, WHICH COULD RESULT
IN PERSONAL INJURY OR PROPERTY
DAMAGE.
c. Remove the gearbox, refer to para-
graph B.1, this section.
THE LOWER PUMP BODY WEIGHS 100 LBS
(46 KG). SUPPORT THE LOWER PUMP BODY
AND IMPELLER ASSEMBLY WITH A
LIFTING DEVICE. FAILURE TO DO SO
COULD RESULT IN THE LOWER PUMP
BODY AND IMPELLER ASSEMBLY
FALLING, WHICH COULD RESULT IN
PERSONAL INJURY, OR PROPERTY
DAMAGE.
d. Remove the drain lines from the lower
pump body.
e. Mark lower pump body, Autolube®
housing, and rear bearing housing for
reassembly.
f. Drain the oil from the AutoLube®,
and remove the 1/2-13UNC X2 inch
long cap screws from the upper half
of the AutoLube® and pump body.
g. Remove the 1/2-13UNC X 1-3/4 inch
long cap screws from the upper half
of the rear bearing housing and pump
body.
h. Remove the 1/2-13UNC X 1-1/4 inch
long cap screws, from the lower
pump body.
DO NOT REMOVE THE FOUR CAP SCREWS,
ONE IN EACH CORNER OF THE LOWER
PUMP BODY, UNTIL THE LIFTING DEVICE
IS IN POSITION. FAILURE TO DO SO COULD
RESULT IN THE LOWER PUMP BODY AND
IMPELLER ASSEMBLY FALLING, WHICH
COULD RESULT IN PERSONNEL INJURY OR
PROPERTY DAMAGE.
i. Position the lifting device into place
with the lower pump body-lifting
adapter between the lifting device and
the lower pump body.
j. Remove the 5/8-11UNC X5 inch long
cap screws in each corner of the
lower pump body.
k. Lower the lower pump body and
impeller assembly so that it does not
tip from the lifting device. Remove
the assembly to a suitable work area.
l. Remove the remaining cap screws
from the lower half of the
AutoLube®, the rear bearing housing,
and the lower pump body.
THE IMPELLER ASSEMBLY IS HEAVY. DO
NOT ATTEMPT TO LIFT THE ASSEMBLY
WITHOUT THE AID OF ANOTHER PERSON
OR PERSONS. FAILURE TO DO SO COULD
RESULT IN THE IMPELLER ASSEMBLY
FALLING, WHICH COULD RESULT IN
PERSONNEL INJURY OR PROPERTY
DAMAGES.