Porter-Cable CFBN125A, Instruction Manual

5.  Make sure the valve disc moves 

freely inside the check valve 
and the spring holds the disc in 
the upper, closed position. The 
check valve may be cleaned 
with a solvent, such as paint and 
varnish remover.

6.  Apply sealant to the check valve 

threads. Reinstall the check valve 
(turn clockwise).

7.  Replace hose and new hose 

clamp.

8.  Perform the Break-in Procedure. 

See "Break-in Procedure" in the 
Operation section.

15 - ENG

A07300

5.  Remove pump mounting screws 

securing pump (one on each 
side).

6.  Carefully slide pump from 

brackets and out of the way.

7.  Using an adjustable wrench or 

5/8" wrench remove the regulator 
manifold.

8.  Apply pipe sealant to new 

regulator manifold and assemble, 
tighten with wrench.

9.  Reapply pipe sealant to gauges, 

quick connect, and safety valve.  

10.  Reassemble all components in 

reverse order of removal. Make 
sure to orient gauges to read 
correctly and use wrenches to 
tighten all components.

To Replace Regulator

1.  Release all air pressure from air 

tank. See "To Drain Tank" in the 
Maintenance section.

2. Unplug 

unit.

3.  Using an adjustable wrench or 

specified wrench remove the 
gauges (7/16" wrench), quick 
connect (13/16" wrench), and 
safety valve (9/16" wrench) from 
the regulator manifold.

4.  Remove the hose by removing 

the hose clamp. 

NOTE: 

The hose 

clamp is not reusable. You must 
purchase a new hose clamp, see 
the Parts List Manual or purchase 
a standard hose clamp at a local 
hardware store.

Pump Mounting Screw

Quick 
Connect

Gauges

Safety Valve

Regulator Manifold

Hose Clamp

Regulator 
Manifold

Pump shown 
moved out of 
the way

Regulator Manifold