Trebor 50U Maxim - Manual (Page 18)

PAGE 18 MAXIM 50E/U PUMP OPERATION / MAINTENANCE MANUAL

Unscrew push plate from the shaft in a counter-clockwise direction. Pull
other push plate and shaft from pump body.
4.7.a Body Disassembly

Remove suction plugs and seal on botto m 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.b 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 remove muffler assembly from each chamber using the
1” pin
tool.
 Unscrew and remove quick exhaust port in each chamber using the 1/2” pin
tool.

Remove quick exhaust seals from cavity.
4.7.c Cleaning

Gently spray clean or dunk rinse all components with 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
– Quick Exhaust

Insert the quick exhaust seal as shown below.

Insert the quick exhaust port in each head as shown usi ng the 1/2” pin tool,
torque to 20in-lbs.