C. E. Niehoff & Co
BRUSHLESS ALTERNATORS
N3135 Regulator
Single and Dual Voltage
Applications
Installation Instructions
CAUTION
This symbol is used to indicate presence of hazards that can cause minor property damage.
N3135 Regulator in Single Voltage (28 V) Applications
CAUTION
When the N1225-1 and the N1505-1 alternators are used in single voltage applications, the alternator phase cable MUST be attached to the N3135 regulator instead of the factory-attached cap shown
in Figure 1.
1 place - torque to 10.2 Nm / 90 lb.in.
(make sure all hardware has been
installed, including spacers, if required)
14 V output will not be present if installed on a single voltage application.
This cap w/attached chain
provided in envelope assembly
must be assembled as shown
on regulator, except as noted
above. Failure to do
so can lead to equipment
damage.
2 places - torque to
➛
3.4 Nm / 30 lb.in.
(make sure all hardware
has been installed)
➛
+14 V terminal not used on
single volt
applications.
Alternator-to-regulator
harness receptacle
➛
➛
TT
T
TT
N3135
Regulator
CAUTION
Vehicle
harness
Page 1 of 2
➛
Regulator – “AC” Terminal
Locknut, #10-24;
torque to 2.3 Nm / 20 lb.in.
2A
568
Washer
FIGURE 1
➛
➛
➛
➛
➛
➛
➛
Boots (p/n N9464,
envelope assembly)
Regulator – “IGN” Terminal
➛
supplied in
Washer
Nut, 1/4-20; torque to
2.8 Nm / 25 lb.in.
II0028D
N3135 Regulator in Dual Voltage (28 V/14 V) Applications
MAKE CONNECTIONS AS SHOWN BELOW IN FIGURE 2:
Phase
connector cap
removed and
wiring attached
➛
2 places - torque to
3.4 Nm / 30 lb.in.
(make sure all hardware has
been installed)
68A
➛
Vehicle harness
(to +14V battery)
1 place - torque to
10.2 Nm / 90 lb.in.
(make sure all hardware has
been installed, including
spacers, if required)
Alternator-to-regulator
harness receptacle
Regulator – “AC” Terminal
torque to 2.3 Nm / 20 lb.in.
Vehicle harness
➛
➛
➛
Washer
Locknut, #10-24;
2A
568
N3135
Regulator
➛
➛
➛
➛
➛
FIGURE 2
➛
➛
➛
➛
➛
➛
➛
Washer
Regulator – “IGN” Terminal
Washer
Nut, 1/4-20; torque to
2.8 Nm / 25 lb.in.
Boots (p/n N9464,
supplied in
envelope assembly)
Boot (p/n N9564,
➛
Nut, 5/16-18 UNC-2B;
torque to 5.6 Nm / 50 lb.in.
Regulator – “+14V” terminal
supplied in
envelope assembly)
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
Page 2 of 2
II0028D