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Page 38 Portable Hot Oil Temperature Control Units
*Each small notch on outer end cap represents .001 inch end clearance.
! WARNING
Before starting the pump, make sure that all
drive equipment guards are in place!
Failure to properly install the guards may result
in serious injury or death!
Installation of Carbon Graphite Bushings
When installing carbon graphite bushings, extreme care must be taken to prevent breaking.
Carbon graphite is a brittle material and easily cracked. If cracked, the bushing will quickly
disintegrate. Using a lubricant and adding a chamfer on the bushing and the mating part will
help in installation. The additional precautions listed below must be followed for proper
installation:
1. A press must be used for installation.
2. Be certain bushing is started straight.
3. Do not stop pressing operation until bushing is in proper position.
Starting and stopping will result in a cracked bushing.
4. Check bushing for cracks after installation.
Carbon graphite bushings with extra interference fits are frequently furnished for high
temperature operation. These bushings must be installed by a shrink fit.
1. Heat bracket or idler to 750°F.
2. Install cool bushings with a press.
3. If facilities are not available to reach 750°F. temperature, it is
possible to install with 450°F. temperature; however, the lower the
temperature, the greater the possibility of cracking the bushing.
Preventative Pump Maintenance
You can extend the life of your pump and reduce the cost per gallon pumped if you perform a
few preventive maintenance procedures.