Holley 12-866 User manual

BILLET FUEL PRESSURE REGULATOR REBUILD KIT
P/N 12-866 & 12-867
(For P/Ns 12-851, 12-852, 12-864, & 12-865)
1. Loosen lock nut (6) and turn adjusting screw (7) counterclockwise
to remove tension from regulator spring.
2. Remove 4 assembly screws (10). Set aside for reuse.
3. Remove the bracket (8), cap assembly (5), retainer (4), and spring
(3). Set aside for reuse.
4. Replace the diaphragm assembly (2). Make certain that the ball
side of the diaphragm is pointed down.
5. Assemble the spring (3) and retainer (4).
6. Reinstall cap assembly (5) and bracket (8).
7. Install the 4 assembly screws (10) and torque to 20 –30 in./lbs.
8. Readjust screw (7) as necessary to achieve correct fuel pressure
on engine, then tighten lock nut (6).
P/N 12-852 EXPLODED VIEW
ITEM
QTY
DESCRIPTION
TORQUE SPECS
1
1
REGULATOR BODY
2
1
DIAPHRAGM ASSEMBLY
3
1
SPRING
4
1
SPRING GUIDE
5
4
REGULATOR CAP
6
4
5/16 –24 NUT
90 –125 IN/LBS
7
1
5/16 –24 X 1.75 SET SCREW
8
1
BRACKET
9
4
#10 SPLIT LOCK WASHER
10
4
10 –24 X 1.38 SCREW
20 –30 IN/LBS
11
1
1/8 NPT PLUG
20 –30 IN/LBS

P/N 12-865 EXPLODED VIEW
ITEM
QTY
DESCRIPTION
TORQUE SPECS
1
1
REGULATOR BODY
2
1
DIAPHRAGM ASSEMBLY
3
1
SPRING
4
1
SPRING GUIDE
5
1
REGULATOR CAP
6
1
5/16 –24 NUT
90 –125 IN/LBS
7
1
5/16 –24 X 1.75 SET SCREW
8
1
BRACKET
9
4
#10 SPLIT LOCK WASHER
10
4
10 –24 X 1.38 SCREW
20 –30 IN/LBS
11
1
1/8 NPT PLUG
20 –30 IN/LBS

P/N 12-851 EXPLODED VIEW
ITEM
QTY
DESCRIPTION
TORQUE SPECS
1
1
REGULATOR BODY
2
1
DIAPHRAGM ASSEMBLY
3
1
SPRING
4
1
SPRING GUIDE
5
1
REGULATOR CAP
6
1
5/16 –24 NUT
90 –125 IN/LBS
7
1
5/16 –24 X 1.75 SET SCREW
8
1
BRACKET
9
4
#10 SPLIT LOCK WASHER
10
4
10 –24 X 1.38 SCREW
20 –30 IN/LBS
11
1
1/8 NPT PLUG
20 –30 IN/LBS

For further questions, please contact our technical department at 1-866-464-6553.
www.holley.com
© 2015 Holley Performance Products, Inc. All rights reserved.
199R10758
Revision Date: 4-13-16
P/N 12-864 EXPLODED VIEW
ITEM
QTY
DESCRIPTION
TORQUE SPECS
1
1
REGULATOR BODY
2
1
DIAPHRAGM ASSEMBLY
3
1
SPRING
4
1
SPRING GUIDE
5
1
REGULATOR CAP
6
1
5/16 –24 NUT
90 –125 IN/LBS
7
1
5/16 –24 X 1.75 SET SCREW
8
1
BRACKET
9
4
#10 SPLIT LOCK WASHER
10
4
10 –24 X 1.38 SCREW
20 –30 IN/LBS
11
1
1/8 NPT PLUG
20 –30 IN/LBS