Model 960 2 GPM at 60 PSI
900cc Dirt Capacity
Installation and Service Instructions
INSTALLATION INSTRUCTIONS
Three connections are required at the centrifuge:
  • Oil Inlet (1/2" NPT Female Pipe) – Unscrew plastic shipping plug. Run #8 hose from point of highest pressure.
  • Oil Outlet (1/2" NPT Female Pipe) – Unscrew plastic shipping plug. Run #8 hose to crankcase above oil level.
  • Air Inlet (1/4" NPT Female Pipe) – Unscrew plastic shipping plug. Run #4 hose from any convenient point on air supply to air valve cartridge inlet. Do not remove cartridge – loss of cartridge seal will damage unit.
CAUTION – Route hoses to clear exhaust and all moving parts and fasten securely. Be certain pressure oil supply is to OIL IN port on side of centrifuge and return to crankcase is from OIL OUT port on bottom. Do not remove full-flow filters. Use the Spinner II centrifuge only as a bypass oil cleaner.
GENERAL INSTRUCTIONS
Dirty Oil Supply to Centrifuge Oil Inlet Pressure Tap on Engine – Most engines, including the latest models from Cummins, Cat, DDC and Mack, provide a 3/8" or 1/2" port to supply an auxiliary device. Avoid using end-of-gallery supply points such as the pressure gauge tap.
Adapter for Cummins – On Cummins engines with the LF777 bypass filter, a Cummins Part 3030967 adapter must be used to replace the LF777 element and provide the oil supply to the centrifuge. Return must be to the crankcase and not back to the adapter. A Spinner II Part 70913 adapter can also be used. Cummins engines with the LF3000 combination filter require no bypass adapter.
Clean Oil Outlet Return to Crankcase Return Opening in Crankcase – Most engines have a 1/2" or larger oil return opening provided in the crankcase wall. If unrestricted, this is an ideal oil outlet line connection point.
Special Return Problems – If there are no available drain openings, it may be necessary to drill and tap an inspection plate. Remove the plate before modification and avoid directing the return flow directly onto moving parts.
Air Supply
Air for the control mechanism can be taken from any convenient place on the vehicle air system where there is a constant supply of air, preferably from the dry tank. 1/8" nylon tubing is sufficient or #4 hose can be used if preferred. Air pressure can vary from 35 to 125 PSIG. No regulators, valves or control devices are required. The Spinner II control automatically shuts off the air supply when the engine stops. 0.02 SCFM air consumption is almost too small to measure.
Note: The control mechanism can be operated on bleed air taken from the turbocharger manifold if compressed air is not available. The standard air valve must be replaced with air valve, part # 72137 . Request Bulletin 98.004 for details.
Mounting Location
Install Vertically, plus/minus 10º. The frame rail is the preferred location for mounting the centrifuge. A Spinner II Part 70845 spacer is available to facilitate inside frame rail mounting, requiring only two holes in the rail. Check with manufacturer before drilling. Bulletin 71294 contains a drilling template. The Spinner II centrifuge is a high speed device and is provided with noise isolators for operator comfort which must be installed as shown above. Care should be used to prevent metal-to-metal contact with the frame or body which might result in unnecessary noise or vibration. The cover clamp can be rotated to any convenient position and tightened by hand only .
MODEL 960 SERVICE INSTRUCTIONS
1. Shut off oil supply (or stop engine) and allow centrifuge turbine assembly to come to a complete stop.

2. Loosen handle on clamp, disengage tee bolt and remove cover, using coin in gap to separate cover from housing.

3. Partially withdraw centrifuge turbine assembly from the housing and allow oil to drain from nozzles before removing completely. Hold the centrifuge turbine assembly in one hand and loosen knurled bowl nut several turns until the face of the nut projects beyond the bronze bushing face. Carefully separate centrifuge bowl from turbine base by striking the face of the nut with the palm of one hand while holding the bowl in the other. Do not strike the nut or the bushing with or against a hard surface or damage will result. Finish removing the nut and then remove the bowl and baffle/screen.

4. Simply replace the dirty centrifuge bowl with a new one OR carefully remove the dirt cake from the bowl using a wooden spatula or other non-damaging tool. Wipe out bowl with solvent, Note: To save time in cleaning, an optional die-cut Bristol paper insert is available as a service part and may be installed to allow the compressed cake to be removed quickly.

5. Wash and clean baffle/screen and turbine base, removing and discarding black Nitrile bowl seal.

6. Inspect top and bottom bushings of centrifuge turbine base. Replace turbine assembly if bushings show severe wear. Re-assemble: Place baffle/screen over stem of turbine base and seat evenly over shoulder on base. Install bowl seal in recess in outer edge of turbine base. Slide a new centrifuge bowl over stem and seat uniformly over bowl seal. Install and tighten knurled bowl nut securely, using finger pressure only.

7.Inspect housing assembly paying special attention to journal areas of spindle. Replace housing if damaged.
8. Clean and inspect cover. Always remove the old cover seal, clean the groove in the housing and mating surface of the cover and replace with a new black Nitrile seal.

9. Check control mechanism , see diagram below

10. Install centrifuge turbine assembly on spindle, making sure it rotates freely. Replace cover, position clamp uniformly over cover and housing flanges, and tighten clamp handle securely by hand pressure only.

11. With the engine running, check all connections and joints for leaks.
TROUBLESHOOTING
CENTRIFUGE REMOVES TOO LITTLE DIRT
Check for Proper Operation
Warm up engine and then bring engine to normal speed for one minute and immediately shut it down. If the Spinner II unit is working correctly the turbine can be heard spinning. As with any high speed device, it may go through momentary periods of vibration as it passes through critical speeds while slowing to a stop. This is normal. If the turbine is not spinning or if vibration is severe or continuous at all speeds, an error may have been made in assembly. Repeat steps 1 – 10, paying special attention to the proper seating of baffle/screen the bowl seal (Step 6) and the control mechanism (Step 9). If vibration persists, substitute a different centrifuge turbine assembly.

If the turbine is spinning properly, the centrifuge is doing its job of removing harmful abrasive dirt regardless of the amount of deposit found in the bowl. The visible deposit is largely soot and its thickness will vary from 1/16" to completely full depending on oil type, oil change interval, engine type and condition, and operating conditions. Oils with an organic dispersant-type additive package are likely to show less deposit build-up than oils with a metallic detergent-type additive package. With the organic package, some of the soot is dispersed in the oil in sub-micronic particles too small to be filtered or even removed by centrifugal force.
CONTROL AIR VALVE PROBLEMS
Float valve flows air constantly or not at all, up or down. Air tank bleeds down overnight
Check Valve (Step 9)
Most air control problems can be repaired without dismounting the centrifuge by renewing the air valve cartridge Part 70938, making certain that air valve cartridge seal Part 70966 is in place. A cartridge installed without the seal will be damaged and will leak continuously. If the float mechanism is worn or broken, the centrifuge must be disassembled and repaired with control float mechanism repair kit Part 71445. Instructions are contained in the kit. Caution: The valve cores in the air valve cartridge are special, low operating force-type with Viton ® seals to withstand hot oil. Do not substitute tire valve cores – replace the entire cartridge.
OIL LEAKS
Cover Seal:
Remove cover and cover seal. Clean seal grooves in housing and mating surface on cover. Install a new cover seal in the housing groove, replace cover, position clamp uniformly over cover and housing flanges, and tighten clamp handle securely by hand pressure only.

Body to Control Mechanism Seal:
Remove cover and centrifuge turbine assembly. Remove control mechanism by loosening four cap screws. Discard seal and clean groove and mating surfaces. Replace seal with a new one and retighten cap screws alternately to 35 lb-ft torque. It is possible to rotate the body 180º if it is necessary to locate the oil inlet port on the left side. Replace the seal and retighten bolts. Continue from Step 3 above.

Oil Line Connections:
Disconnect leaking hose and remove hose adapter from port. Clean threads in port and on adapter, and inspect for damage. Reinstall adapter using a good liquid thread sealant. Reconnect hose.
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