C.E. Niehoff & Co. N1375: N7289 DE Housing Installation - Manual

Page 1 II0073A
N7289 Drive End Housing Assembly
for N1375 Alternators
Installation Instructions
C. E. Niehoff & Co.
BRUSHLESS ALTERNATORS
Removing hardware from other diodes will cause severe damage to equipment.
DANGER
1. Make sure three envelopes were supplied with the new housing assembly. Each enve-
lope contains hardware necessary to correctly assemble housing assembly onto unit.
2. On new DE housing assembly, remove and discard ALL washers and nuts affixed to
positive-negative diode pairs—SEE PAGE 2 for SPECIFIC DIODES. Do not reuse
existing hardware.
3. Install new housing assembly on shell/stator/field coil assembly, making sure to guide
all leads through openings in housing.
4. See pages 2 and 3 to install phase leads and fuse links on housing. Torque all new
brass nuts to 2.8–3.0 Nm/25–27 lb. in. Allow 16 hours to set, then retorque brass nuts
to 2.9–3.1 Nm/26–28 lb. in.
5. Make sure to clean all leads to be attached to terminal strip in control unit. See page 4
to attach leads to terminal strip. Torque screws to 0.9–1.1 Nm/8–10 lb. in.
6. Install lock washer and bolt provided in kit to ground terminal on housing assembly.
7. Coat diodes with fuse links with Dow Corning® 1-2577 Low VOC RTV coating or
equivalent. Do not use coating containing acetic acid (vinegar smell) on electrical
components.
DANGER
This symbol is used in these instructions to indicate the presence of hazards that will cause severe personal
injury, death, or substantial property damage if ignored.