3-7-13 Asphalt Transfer Pump Drive
Removal, Repair and Replacement See figure 3-49.
This procedure assumes a complete removal, repair and replacement of the assembly. A partial disassembly repair and
replacement is possible. Follow the procedure to the point of removing only those components requiring repair or
Disconnect and lock out the breaker for the asphalt transfer pump motor.
The hot oil heating (heat transfer) lines should be cold as should the asphalt lines prior to starting this
procedure. If this is not the case PROCEED USING EXTREME CAUTION IN THE DISCONNECTING OF
HOT OIL UNES AND ASPHALT UNES. Cover all joints with a heavy cloth during disassembly operations.
See Sections 3-7-2 and 3-7-9 to close the valving affecting this part of the tanker.
Close the asphalt valve (item 10 in Section 3-7-9) between the tank and the asphalt pump.
Close the two valves at the front of the tanker (item 4 in Section 3-7-2) for the heat transfer oil.
Use sorbent fabric pad under the deck of the tanker to catch any liquid asphalt and heat transfer fluid that
escapes during the repairs.
Use a clean pail for the heat transfer fluid and a clean pail for the liquid asphalt that drains from the lines.
This material may be re-used.
Disconnect the heat transfer lines to the asphalt transfer pump. Tag these lines prior to removal recording
which line goes to which port. Collect the heat transfer fluid in a pail.
Remove flanged connection between the transfer pump and the asphalt tank. Remove the four bolts
holding it in place and remove the gasket. Collect the liquid asphalt that may drain from the line.
Remove the drive guard outer section.
Remove the sheaves from the transfer pump and the electric motor according to the instructions in Section
3-7-16. Remove the inner half of the drive guard.
Remove the four bolts holding the asphalt pump to the mount.