Your D100 came with a 8 1/4 axle
Look at the rear lower end of the engine
sure grip
Replacing a rear differential seal is easy. All you have to do is unbolt the shaft and take out the old seal.
To remove the rear axle on a 1988 Dodge D100, start by safely lifting the vehicle and securing it on jack stands. Remove the rear wheels and brake components, then disconnect the driveshaft from the axle. Next, unbolt the axle housing from the differential, and finally, carefully slide the axle out from the housing. Ensure you have a fluid catch pan to collect any differential fluid that may spill during the process.
To lower a 1978 Dodge D100, you can use a combination of lowering springs and drop spindles for the front suspension, which will reduce the ride height while maintaining proper alignment. For the rear, installing lowering blocks between the axle and leaf springs can effectively lower the back end. Additionally, adjusting or replacing the shocks with shorter ones may help accommodate the new height and improve ride quality. Always ensure that the modifications are within safe limits for handling and stability.
IF THIS A SMALL BLOCK LA V8 ENGINE, THE OPS IS PROBABLY LOCATED AT THE REAR OF THE BLOCK NEXT TO THE DISTRIBUTOR ASSM.
You have to remove the tranmission and the flywheel.
To replace the rear shocks on a 1989 Dodge D100 pickup 2WD, first, safely lift the vehicle and secure it on jack stands. Remove the lower shock mounting bolt using a socket wrench, then detach the upper mounting bolt in the same manner. Install the new shock by positioning it in place, securing both the upper and lower bolts tightly. Finally, lower the vehicle and check for proper installation and clearance.
You remove the trans and flywheel. The seal then drives in from the rear.
Most are located inside the rear section of the alternator Dodge usually mounted the regulator in the center of the firewall, until the trucks were fuel injected then the computer took over the job of voltage regulator.
If you have to ask, the answer won't help you.