Hale Q Series Muscle - Manual (Page 87)

85 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
Preventive Maintenance 
Thermal Relief Valve Test
The TRV requires testing every 12 months.
Make sure a clear view to the TRV discharge
exists. See separate manual for additional
information.
CAUTION!
DO NOT RUN THE PUMP FOR LONGER THAN IS SHOWN IN TABLE 5-2: “MAXIMUM
PUMP RUN TIME,” AS OVERHEATING COULD OCCUR CAUSING SERIOUS DAMAGE TO
THE PUMP.
Repacking the Seal
WARNING!
DO NOT ADJUST THE PACKING WITH THE ENGINE RUNNING.
The three rings adjacent to the packing gland are replaced without disassembling the
pump. The ring in front of the packing lantern does not need to be replaced. (See Fig-
ure 5-2: “Pump Packing Seal Assembly” on page 86.)
Repack the pump as follows:
1. Loosen the packing nut lock.
2. Loosen the packing gland. If necessary, soak the threads with penetrating oil and
work the nut back and fourth to loosen.
3. Loosen the adjusting gland just enough to remove the split glands. If the front
part of the gland is the split type, remove both halves.
4. Remove the old packing rings with a packing hook. The hook can be made from a
bent piece of stiff wire or small pointed rod.
Note: Another type of packing hook is a corkscrew on the end of a flexible shaft. Be sure to
remove all shreds of old packing, and clean out the packing housing.
5. Remove all old packing, dirt, and foreign matter from the bearing housing under
the gland.
Table 5-2: Maximum Pump Run Time
Pressure
PSIG (kPa)
Time in Minutes
TRV120
TRVM120
TRV170
TRVM170
200 (1378) 10 20
400 (2758) 4 8
600 (4137) 2 4