C.E. Niehoff & Co. N9191 Stud Replacement Instructions - Manual

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N9191 Stud
Replacement Instructions
This symbol is used to indicate the presence of hazards that can cause minor personal injury or
equipment damage.
This symbol is used to indicate the presence of hazards that will cause severe personal injury, death or
equipment damage.
DANGER
This symbol is used to indicate the presence of hazards that can cause severe personal injury, death or
equipment damage.
WARNING
CAUTION
Disconnect alternator, batteries, and
any other auxillary equipment before
removing cables. Failure to do so can
result in severe personal injury.
WARNING
Figure 1 - Removing Stud
CAUTION
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
1. Remove hardware and cables from battery studs on
isolator.
2. Using double nuts, remove stud from terminal.
See Figure 1.
3. Apply Loctite ® 222 to lower threads of new stud.
Using double nuts, install new stud until it extends
no more than an inch out of the terminal. See Figure 2.
Critical dimension: To properly
engage terminal, stud threads
must not extend more than
.94" to 1.06" from top of terminal.
4. Remove double nuts. Install hardware in stacking
order shown in Figure 3.
Failure to follow stacking order
will result in substantial
equipment damage.

M12x1.75 Stud (3 places)
 Lock washer (3 places)


Flat washer (3 places)
Nut (3 places)–
torque to 30 Nm/22 lb. ft.


27mm/1.06 in. dia.
brass boss
Customer cables
to be located
under flat washer
Do not exceed recommended
torque. Component damage
will result.
DANGER
Figure 3 - Stacking Order
CAUTION
CAUTION
Figure 2 - Installing Stud
0.94" to 1.06"
(see step 3)
See step 2
