C.E. Niehoff & Co. N3223 Regulator Installation - Manual

II0156A
Page 1 of 1
N3223 Regulator
28/14 V and 28 V
Applications
Installation Instructions
FIGURE 1 – Installing N3223 in 28/14 V Applications
Boots (2)
Locknut, 0.250-20;
torque to 3.4 Nm / 30 lb.in. Washer
Regulator - AC terminal
Vehicle
harness
Regulator - IGN terminal
N3223 Regulator in 28/14 V applications:
Connect as shown in Figure 1.
(see Figure 2 for 28 V)
Locknut, #10-24;
torque to 3.4 Nm / 30 lb.in.
Washer
Boot
Washer
Keps nut, 0.312-18 UNC-2B;
torque to 5.7 Nm / 50 lb.in.
Regulator - 14 V terminal
Boots (2)
Locknut, 0.250-20;
torque to 3.4 Nm / 30 lb.in.
Washer
Regulator - AC terminal Regulator - IGN terminal
N3223 Regulator in 28 V applications:
Connect as shown in Figure 2.
(see Figure 1 for 28/14 V)
Locknut, #10-24;
torque to 3.4 Nm / 30 lb.in.
Washer
Regulator - 14 V terminal—NOT USED in 28V applications
FIGURE 2 – Installing N3223 in 28 V Applications
AC connector
J1939 connector
Alternator connector
2 places: #10-32 screw, lock washer, and washer;
torque to 3.4 Nm / 30 lb.in.
0.250-28 screw and washer;
torque to 8.5 Nm / 75 lb.in.
2 places: #10-32 screw,
lock washer, and washer;
torque to 3.4 Nm / 30 lb.in. AC connector
J1939 connector
Alternator connector
0.250-28 screw and washer
(below cap); torque to 8.5 Nm/
75 lb.in.
C.E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633