Trebor 55D EVOLVE - Manual (Page 18)

PAGE 18 EVOLVE 55D PUMP OPERATION / MAINTENANCE MANUAL
4.7.b Body Disassembly
• Unscrew push plate from the shaft in a counter-clockwise direction. Pull other push plate
and shaft from pump body.
• Remove suction plugs and seal on bottom of pump body using 1” pin tool.
• Remove suction seat using 1” pin tool.
• Remove ball and O-ring.
• Unscrew suction check using 1” pin tool turning it counter-clockwise.
• Remove second set of O-rings and balls and pull out discharge check cage.
• Remove shaft seals from pump shaft seal groove in the center of the shaft bore using
the tip of a razor knife. Take care not to damage the shaft bore. NOTE: Do not reuse
seals.
• Remove damper plug and seal using 3/4” pin tool.
4.7.c Control Base Disassembly
• Unlock control base from quick-change mount by pulling out lever on front of base to
unlock mount. Then slide base back until it stops. Lift base off mount.
• Using pH test strips evaluate whether base has any contamination in air passages,
especially the muffler area. If present, neutralize using best methods prior to
disassembly.
• Unscrew and loosen Jaco nut until transfer tubes can be removed. Do not remove the
Jaco fitting from the base unless the fitting is damaged.
• Unscrew and remove muffler assembly from base using the 1”pin tool.
• Unscrew and remove the shuttle cap and seal.
• Remove shuttle spool assembly from detent adapter.
• Remove detent legs and detent ring from spool.
• Remove detent adapter from base using 3/4” pin tool.
• Do not remove the shuttle sleeve from the shuttle bore.
4.7.d Pump Cleaning
• Gently spray clean with DI water, or rinse by dunking all components in DI water, to
remove any trace materials remaining after disassembly.
4.8 ASSEMBLY
Prior to beginning assembly, inspect all parts to ensure they are clean and dry. Wear clean
protective gloves. Precautions should be exercised to prevent contaminating any of the air
chamber surfaces with chemicals during handling.
4.8.a Control Base Assembly
• Thread detent adapter into shuttle bore using 3/4” pin tool. (Detent adapter must be flush
against base as shown in Figure 4-3.) Torque to 45in-lbs.