Operator`s manual

Operator's Manual: Model CB-1400
5-7
Vacuum Testing the Oil Pump (continued)
4. The vacuum should increase within 15 seconds to 15 inches of vacuum. When the vacuum gauge reads
15 inches of vacuum, first close and tighten the bleeder, then turn the pump off.
NOTE: If the pump will not pull at least 15 inches of vacuum, there is a very serious suction leak, or
the pump is damaged.
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.