Jeep Disc Brake Conversion

Here are step by step instruction for converting your old Jeep drum brakes to disc. Disc brake stopping power is far superior to drum and is a must for off road use. Here is what you need to do:

J5356183 - Jeep Hub and Rotor Assembly (2)
GM14023429 (NEW) - 1972 and later GM K series or full size jeep 1974-81 caliper support (R & L)
RC4701 - loaded caliper (LH)
RC4702 - loaded caliper (RH)
LM501314 OR LM102911 - (Depends on the year of your vehicle) Replacement inner wheel bearing cup offsets the hub and rotor .062" to align with the GM caliper
J5352688 - FSJ Brake hose or equivilent GM hose (2)
J81278120 - (W/Power brake booster) OR J81278121 - (WO/Power booster) disc brake master cylinder

Remove the original drums, hubs, bearings, brake hoses as well as the 6 nuts that retain the spindle, do NOT remove the spindle. Remove master cylinder at firewall (non-power will require you remove pushrod under dash attached to brake pedal) or if so equipped at the power booster. Now you are ready to install.

Bolt caliper support to the spindle using a couple of nuts
Hang caliper on to caliper support you will notice that there is interference with the caliper and knuckle.
Grind material from knuckle until caliper will clear
Clean away and grindings, dirt or grime
Remove spindle and grease inner spindle bearing
Install spindle and bolt caliper support to spindle, tighten nuts to 28 ft/lbs
Install hub and rotor assemblies, make sure you have installed the correct inner race, packed the bearings with high quality wheel bearing grease and installed new hub seals. Adjust wheel bearings, install locking hubs or dust covers.
Place caliper over rotor making sure that the "bleeder" valve is at the top of caliper, install and tighten mounting pins. Leave bleeder valves open
Attach hoses with new copper washers to calipers. Connect hose at frame and tighten steel line into the hoses
Install master cylinder after bench bleeding as outlined in instructions that come with new master cylinders, tighten steel lines into master cylinder
Fill master cylinder with DOT 3 fluid
Pump brake pedal using very short strokes until you see fluid at both caliper bleeder valves, tighten the bleeder valves
Pump brake pedal as this will align the calipers
Bleed all brakes including rear (make sure the rear brakes are properly adjusted)
Refill master cylinder and check for any leaks, tighten any loose fittings