CLEAN BURN CB-3500 series, Operator'S Manual

Page: 67 / 134

Operator's Manual: Models CB-3500 & CB-5000
5-5
Vacuum Testing the Oil Pump (continued)
5.
If there are no suction leaks, the system will hold vacuum.
NOTE:
It is acceptable for the vacuum to drop one to five inches within one minute as the seal
in the pump seats. The vacuum should then hold steady for 15 minutes.
ATTENTION: If the vacuum drops more than one to five inches within the first minute, there is one or more
leaks somewhere between the pump and the ball valve. Do the following:
• Wipe your finger along the cylinder at the shaft of the pump. If there is oil here, the pump
seal is damaged. Replace the pump.
• Disassemble and clean all the fittings from the pump to the ball valve. Properly seal all
fittings with Permatex #2 non-hardening gasket sealer or equivalent. Check the condition of
the o-ring on the canister filter and tighten the four canister filter bolts in a crisscross pattern.
• Repeat the procedure to vacuum test the system to ensure that the system is air tight.
6. Follow the instructions to prime the metering pump after a vacuum test has been performed.