HALE AP, Technical Manual

Page: 169 / 177

C-7
Test the suction hose as follows.
A. Attach suction hose to pump.
B. Place a suction tube cap on end of hose (in place of strainer).
C. Close all valves and drains. Cap all suction openings and (if equipped) outlet
of suction side relief valve.
D. On pump panel, connect a calibrated vacuum gauge (or manometer) to in-
take test gauge connection.
E. Engage priming pump until gauge indicates at least 22 (± 2) inHg vacuum.
F. Verify calibrated gauge and apparatus gauge displays same reading.
NOTE
Repair or replace any gauge(s) that do not display the correct pressure before return-
ing the pump to service.
G. Watch gauges. If vacuum falls more than 10 inHg in 5 minutes, at least one
air leak is indicated.
If leaks cannot be located by following this procedure, hydrostatically test the pump.
A. Open all valves.
B. Place caps on all valves.
DO NOT EXCEED LOWEST MAXIMUM PRESSURE FOR ALL CONNECTED EQUIPMENT.
C. Connect a positive pressure water source. (Typically 60 to 100 psi.)
D. Inspect pump for leaks.
C.3.2.2 Drive Line And Flange Bolts
Check all drive line and flange bolts to ensure the following.
•
No bolts are missing.
•
All bolts are tight.
NOTE
Use a torque wrench to torque bolts to the drive train manufacturer's recommended
specifications.
•
SAE bolts used are Grade 8 (or better) strength. Metric bolts used are Class 10.9 (or better)
strength.
NOTE
Visually check all bolts for Grade 8 (see Figure 59) or Class 10.9 (see Figure 59)
markings.
Figure 59. Grade 8 Bolt Marking
Figure 60. Class 10.9 Bolt Marking