Yo guys,
As Fred advised, and;
Instead of sliding into the t-case like a car driveshaft would into a trans, a Bronco driveshaft normally is two pieces that slide together. The slipshaft is normally covered by a rubber boot in the middle;
Miesk5 note, trucky upgraded the u joints
When you check the u-joints as Spiked described, park it on a flat spot, block the wheels & put it in neutral. That way the driveshaft will be free to move if the u-joints are bad..."
Source: by spikedzombies (O' Black Betty) & by ElKabong (Ken, El Kabong)
miesk5 note, slip yoke is often referred to as the Slip Shaft Spline
Slip Shaft Spline Lubrication pic in a 95; "...If your bronco suffers from the notorious thunk this is a good time to **** your shaft.."
Source: by TRUCKY18 (Bco)
LOL
Driveline Clunk as Vehicle Starts to Move Following a Brake Stop (Two-Piece Driveshaft); "...Loose rear spring U-bolts. TIGHTEN U-bolts to specification. Worn or galled output driveshaft and coupling shaft splines. REMOVE the driveshaft from the vehicle. CLEAN the male splines and INSPECT for worn or galled splines. REPLACE if necessary. Worn or galled driveshaft slip yoke splines. CLEAN and INSPECT the female splines of the driveshaft slip yoke for worn or galled condition. REPLACE if necessary. Damaged driveshaft slip yoke seal. REPLACE seal. Insufficient lubrication in driveshaft slip yoke. Using a long handle (stencil type) brush, APPLY grease evenly on all the splines of the driveshaft slip yoke. REINSTALL driveshaft and using a hand grease gun, LUBRICATE the driveshaft slip yoke through the grease fitting. Use Premium Long-Life Grease XG-1-C or -K or equivalent meeting Ford specification ESA-M1C75-B. NOTE: Install the driveshaft slip yoke, making sure that the coupling shaft and driveshaft are in phase..."; Miesk5 Note, Premium Long-Life Grease XG-1-C ESA-M1C75-B is available as Castrol MP Multi-Purpose Chassis Grease is a NLGI #2 lithium based, water resistant grease or ConocoPhillips Moly Poly Grease NLGI No. 2.
From
http://broncozone.com/topic/24635-u-joint-info/