QuestionJohn-
I'm thinking about saving some money and replacing my pads and rotors all around on my 2002 DiscoII. Dealer charges $1300 and local shop charges $800. (again, this is for all 4 wheels)
I understand the step-by-steps you've given before. My first question is about the bearings: If I'm not confident in messing with the bearings, is there any shame/negative in not touching them?
Second question: is there a good manual/site for step-by-step instructions for changing my front and rear pads/rotors, including parts list (as a person who is technically inclined, but hasn't done a lot of auto work)?
Any help would be great.
-Chris
AnswerHi Chris,
If you changed rotors before, this should be a familiar job for you. Not much to be aware of...no unusual parts.
As for bearings, if you are changing the rotors, now's the time to repack those bearings. There exposed...so why not dive right in? Give them a through cleaning. Once cleaned, you'll know if they should be replaced. Repacking is simple but messy...make sure to squeeze that bearing grease throughout the bearing case. You could always have a local garage do this for you...would take about 30 minutes (max).
The only manual I am aware of for the Disco II is the LR workshop manuals found at your local LR dealership. They can order them for you.
My dealer (parts counter) contact was good enough to give me photocopies of the repair I was performing. I buy the parts from them and they let me have the repair pages that I need. Nice to have this kind of relationship.
Try www.discoweb.org and go to the bulletin board section. Select search and type "dii brake install" (omit install for more info).
It's very straight forward to replace rotors and pads.
Best of luck,
JohnMc
NB: some extra info form LR workshop manual -
BRAKES REPAIRS
Brake disc - front
$%70.12.10
Brake discs must be renewed in pairs, unless one disc requires changing before 1000 miles (1500 km) from new.
Remove
1. Raise front of vehicle.
WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
2. Remove road wheel(s).
3. Remove 2 bolts securing brake caliper to swivel hub.
4. Release caliper and tie aside clear of brake disc.
CAUTION: Do not allow caliper to hang on brake hose.
5. Remove screw securing disc to drive flange.
6. Remove brake disc from drive flange
Refit
1. Clean mating faces of drive flange and disc.
2. Fit brake disc to drive flange, fit screw tighten to 13 Nm (10 lbf.ft).
3. Clean mating faces of caliper and hub.
4. Fit caliper, and tighten bolts to 175 Nm lbf.ft).
5. Fit road wheel(s) and tighten nuts to (103 lbf.ft).
6. Remove stand(s) and lower vehicle.
BRAKES Brake disc - rear
$%70.12.33
Brake discs must be renewed in pairs, unless one disc requires changing before 1000 miles (1500 km) from new.
Remove
1. Raise rear of vehicle.
WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
2. Remove road wheel(s).
3. Remove 2 bolts securing brake caliper to rear hub.
4. Release caliper and tie aside clear of brake disc.
CAUTION: Do not allow caliper to hang on brake hose.
5. Remove screw securing disc to drive flange.
6. Remove brake disc from drive flange.
Refit
1. Clean mating faces of drive flange and new disc.
2. Fit brake disc to drive flange, fit screw and tighten to 13 Nm (10 lbf.ft).
3. Clean mating faces of caliper and hub.
4. Fit caliper and tighten bolts to 95 Nm (70 lbf.5. Fit road wheel(s) and tighten nuts to 140 Nm (103 lbf.ft).
6. Remove stand(s) and lower vehicle.
Ball and Roller Bearings
General (comments and suggestions)
When removing and installing bearings, ensure that the following practices are observed to ensure component serviceability.
Remove all traces of lubricant from bearing under inspection by cleaning with a suitable degreasant; maintain absolute cleanliness throughout operations.
Conduct a visual inspection for markings on rolling elements, raceways, outer surface of outer rings or inner surface of inner rings. Reject any bearings found to be marked, since marking in these areas indicates onset of wear.
Hold inner race of bearing between finger and thumb of one hand and spin outer race to check that it revolves absolutely smoothly. Repeat, holding outer race and spinning inner race.
Rotate outer ring gently with a reciprocating motion, while holding inner ring; feel for any check or obstruction to rotation. Reject bearing if action is not perfectly smooth.
Lubricate bearing with generous amounts of lubricant appropriate to installation.
Inspect shaft and bearing housing for discoloration or other markings which indicate movement between bearing and seatings.
Ensure that shaft and housing are clean and free from burrs before fitting bearing.
If one bearing of a pair shows an imperfection, it is advisable to replace both with new bearings; an exception could be if the faulty bearing had covered a low mileage, and it can be established that damage is confined to only one bearing.
Never refit a ball or roller bearing without first ensuring that it is in a fully serviceable condition.
When hub bearings are removed or displaced, new bearings must be fitted; do not attempt to refit the old hub bearings.
When fitting a bearing to a shaft, only apply force to the inner ring of the bearing. When fitting a bearing into a housing, only apply force to the outer ring of the bearing.
In the case of grease lubricated bearings (e.g. hub bearings) fill the space between bearing and outer seal with the recommended grade grease before fitting seal.
Always mark components of separable bearings (e.g. taper roller bearings) when dismantling, ensure correct reassembly. Never fit new rollers in a used outer ring; always fit a complete new bearing assembly.
