SPX Flow Preventative Maintenance Checklist

Implementation of preventive maintenance plan keeps SPX FLOW products running at optimal levels and protects your product investment. Use the below checklist to figure out when it is time for regular product inspections and part replacements using SPX Flow products spares to extend your products lifecycle.

Oil/Lubrication

Check for damaged rear oil

Possible Causes

Seal may be old and worn
No grease on lips to lubricate
Shaft worn under seals
Not centered on shaft when installed

Possible Solutions

Replace seals
Properly lubricate with grease when installing
Inspect shaft surface under seals

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Check for Leaks-Flush fluid

Possible Causes

Damaged seal, fitting or flush tube
Damaged flush-side seal components, damaged elastomers

Possible Solutions

Replace seal, fitting or flush tube
Replace flush-side seal components
Replace elastomers

MAINTENANCE FREQUENCY: WEEKLY

Check Front Grease Seals

Possible Causes

Seal may be deteriorated or worn
Shaft worn under seals, or no grease on lips to lubricate

Possible Solutions

Replace seals
Properly lubricate with grease when installing
Inspect shaft surface under seals

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Check for Leaks Product

Possible Causes

Damaged seals or elastomers

Possible Solutions

Replace seals or elastomers

MAINTENANCE FREQUENCY: WEEKLY

Check oil level, for contaminants and for leaks (if applicable)

Possible Causes

Oil leak from gear case cover, oil seal or gear case rear oil seal
Loose back cover, Oil plug damaged

Possible Solutions

Replace oil seals
Check or replace oil plug

MAINTENANCE FREQUENCY: WEEKLY

Check for excess grease in clean-out plugs

Possible Causes

Excess grease accumulates with normal operation

Possible Solutions

Remove excess grease from clean-out plugs

MAINTENANCE FREQUENCY: MONTHLY

Rotors

Check for sharp edged shaft shoulder

Possible Causes

Loose rotor nut(s)
Belleville-style washer(s) on backwards
Rotors slammed against shoulder when installed
Backface clearances not even

Possible Solutions

Torque rotor nut(s) properly
Install Belleville-style washer(s) correctly
Remove sharp edge with file to prevent cutting shaft o-ring
Verify backface clearances are even

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Check for worn rotor hub end or shaft shoulder

Possible Causes

Loose rotor nut(s)
Belleville-style washer(s) on backwards
Rotors slammed against shoulder when installed

Possible Solutions

Torque rotor nut(s)
Install Belleville-style washer(s) correctly
Replace rotors and shafts or shim front bearing(s) to maintain proper backface clearances

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Check for worn/damaged rotor or shaft keyway(s) or key(s)

Possible Causes

Loose rotor nut(s)
Belleville-style washer(s) on backwards

Possible Solutions

Replace rotors, shafts and keys
Torque rotor nut(s)
Install Belleville-style washer(s) correctly

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Check for rotor tip to rotor tip contact or uneven rotor tip to rotor tip clearance

Possible Causes

Hard object jammed into rotors and twisted shafts

Possible Solutions

Replace shafts
Install strainers if necessary
Check and replace gears if necessary

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Check for rotor tip to rotor hub contact

Possible Causes

Loose rotor nut(s)
Belleville-style washer(s) on backwards
Back face clearances not even
Bearings need replacing

Possible Solutions

Torque rotor nut(s) properly
Install Belleville-style washer(s) correctly
Verify backface clearances are even
Check and replace bearings

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Gears/Bearings

Inspect for Gear backlash

Possible Causes

Lack of lubrication
Excessive hydraulic loads
Loose gear locknuts

Possible Solutions

Check lubrication level and frequency
Reduce hydraulic loads
Torque locknuts to specified torque valves
Check and replace gears if necessary

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Inspect bearings, axially or radially movement

Possible Causes

Lack of lubrication
Excessive hydraulic loads
Product of water contamination

Possible Solutions

Check lubrication level and frequency
Reduce hydraulic loads
Ensure no excess grease build-up
Replace bearings If necessary

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Inspect gears for worn or broken teeth

Possible Causes

Lack of lubrication
Excessive hydraulic loads
Loose gear locknuts

Possible Solutions

Check lubrication level and frequency
Reduce hydraulic loads
Torque lockouts to specified torque valves
Check and replace gears if necessary

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Inspect for loose gears

Possible Causes

Gear locknuts not tongued properly
Locking assembly not torqued properly
Worn gear key

Possible Solutions

Torque gear nut to specified toque value
Check and replace gears if necessary
Inspect gear keys, shaft keyway and shaft, replace If necessary

MAINTENANCE FREQUENCY: EVERY 3 MONTHS

Pump Remanufacture Program

The Remanufacture Program will restore your Universal series pumps* to new pump status as many times as possible. Regardless of condition, pumps will be remanufactured TWICE GUARANTEED.

Factory Warranty

You get a NEW Full-Year Warranty along with the same quality, performance-tested, rugged reliability you’ve come to expect from Waukesha Cherry-Burrell.