Trebor 55D EVOLVE - Manual (Page 20)

PAGE 20 EVOLVE 55D PUMP OPERATION / MAINTENANCE MANUAL
ATTENTION: Threads should be snug. Do not over tighten.
• Perform this step only if the Jaco fitting was removed during disassembly. Inspect
Jaco fittings for damage. If damaged replace with black polypropylene Jaco Fittings
(Jaco Part No. 10-8-4-P-PG. These parts can be ordered from Trebor or purchased
separately)
• Perform this step only if the Jaco fitting was removed during disassembly. Apply
PTFE thread tape to the NPT threads on the Jaco fittings. Do not tape more than ½ of
the threads. Thread Jaco fittings into base until the wrench hex contacts the base. See
Figure 4-5. Loosen nut.
Figure 4-5: Jaco Fitting Final Position
• Thread muffler assembly into base using 3/4” pin tool.
4.8.b Body Assembly
• Install seal and damper plug into body using 3/4” pin tool, torque to 50in-lbs.
• Remove pump from assembly fixture.
• Turn pump upside down to access check bores.
• Install discharge check cage into bore making sure small end fits into relief in bottom of
bore.
• Drop ball into check cage, then O-ring.
• Install suction sleeve into the bore; tighten using 1” pin tool. Tighten until engagement
with O-ring is achieved, then unthread the sleeve a quarter turn. Do not over tighten as
damage may occur.
• Install second ball into check cage, then O-ring.
• Install suction seat using the 1” pin tool. Tighten until engagement with O-ring is
achieved, then unthread the seat a quarter turn.
• Install check seal onto check bore shoulder and thread suction plug into bore using 1”
pin tool, torque to 60in-lbs.