HALE AP, Technical Manual

Page: 62 / 177

50
Use the lubricant listed in Table 21 to protect the mechanical seals from damage, speeds up as-
sembly, and to ensure continued service and operation.
Table 21. Recommended Mechanical Seal Lubricant
Application Lubricant 1/
Mechanical Seal P-80 THIX Lubricant Gel (Blend of synthetic esters and water in a thixotropic
formula with a viscosity of about 10,000 cps)
Note 1/: Or equivalent lubricant.
The gearbox lubricants listed in paragraph 7.4.4.1.1, Recommended Gearbox Lubricants, in the
Flex Series Single Stage Booster Pump OIM (FSG–MNL–00183) are required to maintain the
change interval listed in Table 7, Recommended Preventive Maintenance, and to ensure contin-
ued service and operation across the required ambient temperature range of– 20 º to +50 ºC
(0 to +120 °F).
5.7.3
Cleaning And Lubrication Required For Mechanical Seal Installation
Before installing the mechanical seal, use the alcohol swabs provided by Hale Products Inc. to
clean all grease or oil from the pump shaft and pump head.
ALWAYS USE AND ONLY USE PAC-EASE RUBBER LUBRICANT EMULSION (OR EQUIVA-
LENT) WHEN INSTALLING THE MECHANICAL SEAL. USING ANY OTHER LUBRICANT OR
NOT USING THE LUBRICANT MAY DAMAGE THE MECHANICAL SEAL AND SEAT.
5.7.4 Replacement Fasteners
Replacement studs must be metric class 8.8 (or better). Apply Loctite™ 680 (or equivalent) to
the housing side threads at the time of install (locker dries to fast to pre-apply).
Replacement screws and steel nuts must be grade 5 (or better) and grade 8 (or better) for drive
line fasteners. Apply Loctite™ 243 (or equivalent) to all threads where lock/spring washers are
NOT used.
Self-locking nuts must be grade 5 (or better), 360O nylon patch lock fasteners. Do NOT reuse
self-locking nuts. Do NOT apply Loctite.
Always remove old thread locker from used fastener threads before installation and torque as
specified in Table 22.
Table 22. Maximum Torque Values
Fastener Size Fastener Material Torque ft-lb (Nm)
3/8—16 Zinc-Plated Steel 50(68)
3/8—16 Stainless Steel 28(39)
7/16—14 Zinc-Plated Steel 70(95)
7/16—14 Stainless Steel 28(39)
M8 x 1.25 Zinc-Plated Steel (Into Aluminum) 12(16)
M10 x 1.5 Unplated Steel Nut 17(23)
M10 x 1.5 Unplated Steel Stud (Into Aluminum) 24(32)
M12 x 1.75 Unplated Steel Stud (Into Aluminum) 40(54)
M12 x 1.75 Unplated Steel Nut (Grade 8) 29(39)