Rugged Ridge NP231 Mega Short Slip Yoke Eliminator (SYE) Kit with Speed Sensor - Manual (Page 5)

Installation Instructions: 18676.72
STEP 10: Lubricate the shaft assembly, chain, and shaft bearing surfaces. Install the
main shaft assembly into the front case half planetary assembly. Place the front output
shaft on the chain and work them into position with the main shaft and case. Once they
are properly located replace the mode spring onto the shift rail.
Photo 4. NP231 after completion of the first 10 steps. The rear case half is now ready to
be installed.
STEP 11: Clean both halves of the transfer case and remove any excess transmission
fluid. It is important to not have any oil, grease, or ATF on the case mating surfaces
when ATV silicone is used.
STEP 12: Be sure the oil pump and pick up tube are properly located. Use RTV sealant
( OEM P/N: 82300234) on the case halves. A good seal will prevent oil leaks. Slide the
rear case half on and into position.
Do not force the case together . Rotate the oil pump
as needed to engage the splines. The mode fork shift rail needs to extend through the
rear case half . Before installing the case bolts start one to hold the back half of the case
in place and inspect to see if oil pump pickup tube is still in the correct location. If yes
than install all the bolts in their proper locations and torque to 25-30 ft/lbs. Reinstall the
selector lever.
STEP 13: With the back half of the case tightened to the proper torque spec slide the
speed sensor tone ring onto the main shaft (see image above). Tone ring should have the
tall edge facing towards the back of the transfer case and the flanged side (short edge)
should be facing the yoke (threaded) side of the main shaft.
STEP 14: Clean the mating surface of the transfer case and the Mega Short output
housing before proceeding. Pre-lube bearing and apply ATV to the output housing.
NOTE: the housing should already have the bearing, seal and bearing C-clip ring
installed by the factory. With all components in place install the Mega Short output
housing reusing the OE bolts used to hold the factory output housing in place.
Pg.5