Hale MG - Manual (Page 78)

Muscle Pumps
5-14
6. Place the AutoLube® face down on a
work bench and remove the two allen-
head cap screws from the impeller side.
Separate the two halves and remove the
diaphragm.
7. Remove the oil seal lock ring.
8. Remove the oil seal from the inner half of
the AutoLube®.
9. Check the impeller shaft bushing for wear.
10. Clean the inner and outer halves of the
AutoLube®.
11. Clean the gasket surfaces of the
AutoLube® and pump body.
12. Check for restrictions in the water
passages to the rear half of the
AutoLube®.
13. If it is necessary to replace the impeller
shaft bushing, press the bushing from the
inner side of the inner half of the
AutoLube® (on the side opposite of the
impeller). Install the bushing from the
impeller side of the inner half of the
AutoLube®. See figure 5-6.
THE IMPELLER SHAFT BUSHING SEATS
AGAINST A SHOULDER IN THE INNER HALF
OF THE AUTOLUBE® AND CAN ONLY BE
REMOVED AND INSTALLED AS DIRECTED
OR THE AUTOLUBE® MAY BE DAMAGED.
14. Install the new oil seal in the inner half of
the AutoLube®.
15. Install the seal lock ring.
16. Position the diaphragm on the inner half
of the AutoLube®.
17. Line up the marks, and place the outer half
of the AutoLube® onto the inner half.
Apply Loctite® 242 to the two allen-head
cap screws. Tighten to 26 ft-lb (35 N-m).
18. Install the new gasket on the AutoLube®,
and position the assembly (with the top
up) onto the impe ller shaft. Attach the
AutoLube® with cap screws and tighten
to 64 ft-lb (87 N-m).
DO NOT DAMAGE THE OIL SEAL. A
DAMAGED OIL SEAL COULD RESULT IN
DAMAGE TO THE AUTOLUBE® ASSEMBLY,
AS WELL AS THE PUMP.
PURGE THE AIR FROM THE AUTOLUBE®
WHILE FILLING IT WITH OIL OR A “FALSE-
FILL” SITUATION WILL DEVELOP, WHICH
COULD CAUSE DAMAGE TO THE
AUTOLUBE® AND OTHER COMPONENTS
19. To fill the AutoLube® with 90w oil, pump
the oil in from the bottom plug opening
until the oil spills from the top opening.
This eliminates air pockets and false
readings.
20. Add water to the pump.
21. Operate the fire pump and check the
AutoLube® for water or oil leaks.
22. Remove the tire chocks.
23. Return apparatus to service.