C.E. Niehoff & Co. N3247 Regulator Installation - Manual

II0161A
Page 1 of 1
N3247 Regulator
28/14 V and 28 V Applications
Installation Instructions
FIGURE 1 – Installing N3247 in 28/14 V Applications
Boots (2)
Locknut, 0.250-20;
torque to 4 Nm / 35 lb.in.
Washer
Regulator - AC terminal
Vehicle
harness
Regulator - IGN terminal
N3247 Regulator in 28/14 V applications:
Connect as shown in Figure 1.
(see Figure 2 for 28 V)
Locknut, #10-24;
torque to 2.3 Nm / 20 lb.in.
Washer
Boot
Washer
Nut, 0.312-18 UNC-2B;
torque to 5.6 Nm / 50 lb.in.
Regulator - 14 V terminal
Boots (2)
Locknut, 0.250-20;
torque to 4 Nm / 35 lb.in.
Washer
Regulator - AC terminal Regulator - IGN terminal
N3247 Regulator in 28V applications:
Connect as shown in Figure 2.
(see Figure 1 for 28/14 V)
Locknut, #10-24;
torque to 2.3 Nm / 20 lb.in.
Washer
Washer
Nut, 0.312-18 UNC-2B;
torque to 5.6 Nm / 50 lb.in.
Regulator - 14 V terminal
—NOT USED in
28V applications
FIGURE 2 – Installing N3247 in 28 V Applications
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
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;
torque to 8.5 Nm / 75 lb.in.