Advance Adapters AX15 - Manual (Page 4)

GASKETING SPECIFICATIONS:
In order to install the new adapter housing, top cover, and bearing retainer, we recommend using Loctite 518 Gasket Eliminator.
This sealant seems to work best.
SPEEDOMETER:
Most 4WD installations provide a speedometer drive gear on the back side of the transfer case.
On 2WD transmission swaps, Dodge transmissions are the most desirable due to the mechanical speedometer drive. The later
versions (1998 & newer transmissions) do not have any type of speedometer provisions. The GM 2WD NV4500 transmissions
use an electronic speed sensor. These transmissions will not allow you to retain your stock speedometer drive.
BACKUP SWITCH:
All NV4500s are equipped with an electronic reverse backup switch. If your vehicle is equipped with some type of backup indicator
light, it can be adapted very easily to the new NV4500 switch. The parts required to couple to this switch are P/N 300378 (1),
300378 (2 req.), and 300378-1 (2 req.).
SUSPENSION LIFTS:
Driveline angles could be a major problem when using the NV4500 primarily because of the extreme length of the new transmis-
sion. It will be very important that you consider the new adapter length before purchasing any components. Compensation for the
rear driveline angle can be adjusted slightly by the use of axle degree shims and by adjusting the crossmember support down-
ward from the frame rails.
DO NOT OVERLOOK the effects of the suspension lift when using a NV4500. Most complaints of
noise after a transmission swap are due to improper driveline angles.
NV4500 rebuild kit:
If you find your own NV4500, but need to freshen
it up with some new bearings seals and syn-
chronizers, we offer
P/N 715691 . This kit sup-
plies you with replacement parts for the normal
wear items of the NV4500.
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