When you turn the front rotor on 1989 Chevy, do the inner bearings need to be out?

remove wheel, brake caliper, dust cap, cotter pin, nut and washer, remove outer bearing. re-install nut a few turns and pull off rotor catching the inner bearing with the nut and pulling inner bearing out of rotor. remove inner and outer bearing races, install new races and grease surfaces of races and pack new wheel bearings with bearing grease and re-install in reverse order. wheel bearing nut tighten then back off and snug until you can put a new cotter pin through the holes of the nut and spindle hole and bend over the pin to lock nut from coming lose. caliper bolts/pins tighten.

remove the wheel, remove the spindle dust cover and remove tho cotter pin and remove brake caliper and finally remove thr spindle nut,washer and inner bearing and finally the rotor. remove the dudt seal on the back of the rotor and finally the inner braeings.when you replace the bearings make sure that you replace the races and install a new seal on the rotor

It's a pretty straight forward job make sure you replace both the inner and outer wheel bearing and also make sure you replace the inner and outter bearing races located inside the brake rotor if you don't know or don't have the correct tools to replace the races then just but a new brake rotor ..it will have the races already pressed in it. Make sure not to over tighten the outter nut that holds the rotor and bearing in place . the best way to tighten it is to tighten it all the way down with a wrench to seat the bearings then loosen it back up till you have play in the rotor and bearing again ... then while spinning the who;e rotor and bearing assembly with one hand turn the nut as tight as you can with your fingures and then install your nut retainer and cotter pin. Spin the whole brake rotor after installing the nut retainer and cotter pin to check for excessive play .You should do the other side also if one failed chances are the other will shortly.

If its to wheel drive than it will have a inner and outer bearing. 1. Remove the caliper 2. Remove the dust cap from the center of he rotor 3. Remove the cotter pin from the spindle 4. Remove the castellated nut 5. Remove the nut and washwer 6. Remove the outer bearing 7. Remove the rotor from the spindle 8. Remove the grease seal from the back of the rotor 9. Remove the inner bearing Clean the grease out of the rotor. Use a punch to remove the inner and outer races from the hub. Install the new races into the rotor with a seal/race driver. Pack the new bearings. Install inner bearing into rotor. Install new grease seal. Wipe old grease off of the spindle and apply a thin coat of new great. Install rotor ono spindle. Install outer bearing, washer, and nut. Tighten nut snug then back off nut a half of turn and then tighten agin just barely snug. Install castellated nut and cotter pin. Reinstall dust cap Reinstall caliper and your done. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Brake Rotor (Disc) - REMOVAL & INSTALLATION

1. Loosen the wheel lug nuts.
   
2. Jack up the front of the vehicle and support on jackstands.
   
3. Remove the wheel and tire.
   
4. Remove the brake caliper assembly as described earlier in this section, but do not disconnect the brake hose.
   
5. Suspend the caliper assembly by a piece of wire. Do not allow it to hang by the brake hose.
   
6. Follow the procedure given under wheel bearing removal in Suspension and Steering for models with manual and automatic locking hubs (lines down).

New rotor assemblies come protected with an anti-rust coating which should be removed with denatured alcohol or degreaser. New hubs must be packed with EP wheel bearing grease.

1. Installation is the reverse of the removal procedure.

Front Wheel Bearings - REMOVAL & INSTALLATION
(see Figure 1 )

Fig. 1: Inspect the bearings for abnormal wear and/or damage

With Manual Locking Hubs
(see Figures 2 through 17)

1. Raise the vehicle and install jackstands.
   
2. Remove the wheel and tire assembly.
   
3. Remove the retainer washers from the lug nut studs and remove the manual locking hub assembly from the spindle.
   
4. Remove the snapring and spacer from the end of the spindle shaft.
   
5. Remove the outer wheel bearing locknut from the spindle using 4 prong spindle nut spanner wrench, T86T-1197-A or equivalent. Make sure the tabs on the tool engage the slots in the locknut.
   
6. Remove the locknut washer from the spindle.
   
7. Remove the inner wheel bearing locknut from the spindle using 4 prong spindle nut spanner wrench, T86T-1197-A or equivalent. Make sure the tabs on the tool engage the slots in the locknut.
   
8. Remove the outer bearing cone and roller assembly from the hub. Remove the hub and rotor from the spindle.
   
9. Using seal removal tool 1175-AC or equivalent remove and discard the grease seal. Remove the inner bearing cone and roller assembly from the hub.
   
10. Clean the inner and outer bearing assemblies in solvent. Inspect the bearings and the cones for wear and damage. Replace defective parts, as required.
    
11. If the cups are worn or damaged, remove them with front hub remover tool T81P-1104-C and tool T77F-1102-A or equivalent.
    
12. Wipe the old grease from the spindle. Check the spindle for excessive wear or damage. Replace defective parts, as required.

Fig. 2: Before beginning the wheel bearing removal, and after the outer hub is removed, wipe off any excess grease

Fig. 3: After the grease is wiped off, remove the axle shaft snapring ...

Fig. 4: ... then pull the splined spacer from the axle shaft end

Fig. 5: Use a 4 pronged socket to loosen the outer wheel bearing locknut ...

Fig. 6: ... then remove the outer locknut

Fig. 7: Remove the lockwasher from behind the outer locknut ...

Fig. 8: ... then loosen and remove the inner locknut-note the lockwasher engagement pin (arrow)

Fig. 9: While pushing inwards on the rotor/hub assembly, remove the outer wheel bearing ...

Fig. 10: ... then pull the rotor/hub assembly from the spindle, taking care not to scratch the bearing cups in the hub

Fig. 11: Pry out the grease seal on the back of the rotor/hub assembly ...

Fig. 12: ... then remove the inner wheel bearing. Thoroughly clean and inspect all of the parts for wear or damage

continue...

Section 05-03C: Wheel Hubs and Bearings, Front Wheels, 4-Wheel Drive 1997 F-250/350/Super Duty Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 05/17/2000 Locking Hubs, Manual




Item Part Number Description 1 3A329 Halfshaft 2 3C132 Rolling Diaphragm Seal (Axle) 3 3299 Integral Spacer Needle Bearing Seal 4 3123 Bearing, Caged Needle 5 3105 Front Wheel Spindle 6 1190 Wheel Hub Grease Seal 7 4221 Inner Wheel Bearing (with Bearing Cup 4222) 8 1102 Front Disc Brake Hub and Rotor 9 4221 Outer Wheel Bearing (with Bearing Cup 4222) 10 - Pin (Part of 1195) 11 1195 Inner Lock Nut 12 1198 Lockwasher 13 1197 Outer Lock Nut 14 - Steel Thrust Washer
(Part of 3B458) 15 - Plastic Thrust Washer
(Part of 3B458) 16 - Splined Thrust Washer
(Part of 3B458) 17 3B457 Snap Ring 18 1K105 Hub Body 19 - Lock Ring (Part of 1K106) 20 1K104 Cap 21 1K104 Capscrew A - While Rotating Front Disc Brake Hub and Rotor, Tighten Inner Lock Nut to 68 Nm (50 Lb-Ft) to Seat Bearings. Back Nut Off 90 Degrees (1/4 Turn). B - Tighten to 217-278 Nm (160-205 Lb-Ft) C - Tighten to 4-6 Nm
(35-53 Lb-In) Removal

1. Separate cap assembly from hub body by removing the three Torx® head capscrews.
   
   
   
   
   
   
   
   
   

1. Remove the lock ring seated in the groove of the front disc brake hub and rotor (1102).
   
   
   
   
   

1. Remove the hub body assembly from the front disc brake hub and rotor. If the body is difficult to remove, install two capscrews and pull the body assembly out of the front disc brake hub and rotor.
   
   
   
   
   

Installation

1. NOTE: Do not pack the hublock body assembly or cap with grease. Excessive grease can cause excessive dialing effort and hub failure.
   
   Follow removal procedure in reverse order.
   

1. Tighten three Torx® head capscrews to 4-6 Nm (35-53 lb-in).
   

Once you remove the center cap, remove the cotter pin, and remove the nut and washer, the outter bearing should slide right off. Remove that, and put the nut back on, then pull the rotor towards you, allowing the nut to touch the top of the inside of the rotor, until you catch the inner bearing on the nut, then give a ****, that should leave the bearing and seal left on the spindle. If not, you can use a seal remover, to get out the seal and the bearing will fall out of the rotor. Pack the new bearings and install the inner bearing, tap in the seal in the rotor, install rotor, install packed outer bearing and install.

there are bearings but they do not have to be pressed in you can use a rubber mallot and tap them into place only the inner bearing needs to be tapped in

There are two bearings on each front wheel, an inner and an outer bearing. Changing them is not hard if you are mechanically inclined. What you do is, jack the front end up to lift the wheel off the ground and put a jackstand to support the vehicle and put a block on teh rear wheels...DO NOT USE THE JACK ONLY!!!

Once the vehicle is up, remove the wheel to access the disc brakes.

Remove the caliper from the rotor and place it somewhere in the wheel well where the brake line will not be stressed...THIS IS VERY IMPORTANT...the job gets a LOT harder if the brake line breaks!

Next, remove the bearing cap to reveal the cotter pin and bearing nut, remove the cotter pin and nut DO NOT LOSE THESE!!!

You will see the outer bearing, remove it, the washer, and the race then pull the rotor off to reveal the inner bearing, race, and grease seal; remove these, DO NOT FORGET HOW THEY CAME OFF!!!

Clean the spindle and the rotor meaning get all the dirt and crud...this has to be squeaky clean or dirt will get inside and you will be replacing your bearings again in a couple of months.

Now, you need to pack the inner bearing with grease...what I do is wear nitrile gloves and scoop a handful of grease out of the container into the palm of my hand, then I take the new bearing and push it into the grease ensuring grease is in the bearing and coming out the other side.

Next install the grease seal, inner bearing and race by following the removal steps in reverse order. While you're at it, put a good amount of grease on the spindle...there is no such thing as too much grease.

Slide the rotor on until it makes with the inner bearing, make sure the rotor is on straight, if you can't get it straight the inner bearing is not on straight so do the inner bearing again to get it on straight and then put the rotor on...it should slide easily on with no resistance and rotate freely.

Now pack the outer bearing the same way you packed the inner bearing and slide it on the spindle. Install the washer, this will most likely have a tab on it to align the spindle, make sure the washer is on correctly.

Now you are going to reinstall the nut but only hand tighten it for now because you are going to have to spin the rotor forwards and backwards to ensure it rotates freely and is straight.

Once you determine the rotor is straight and rotates freely, tighten the nut about a quarter turn (no more than 16 foot-pounds). If the nut is castellated, ensure it is lined up with the hole in the spindle. Now install a new cotter pin...IT HAS TO BE NEW, using the old one increases the risk of the pin breaking which will let the nut loosen which will end up with your wheel coming off, most likely while you're doing 80 on the Interstate.

Once the cotter pin is installed and bent, fit the cap back on. The pin should be bent sufficiently to allow the cap to be tapped on.

Now reinstall the caliper and pads, put the wheel back on and you are done!

what I do is put a glob of grease in the palm of my hand and push bearing down in to grease untill you see the grease come out of the bearing or you can go to your local parts store and get a bearing grease packer. also wipe spindal with a genorus glob and put grease in between bearing in rotor. To get to the bearings all you need to do is remove tire, center cap (outter grease seal) the silver cap in the center. the cotter pin, Nut, washer outter bearing then the rotor will slip off inner bearing is in rotor still being held in by inner grease seal take seal off replace with new one pack your bearings and reverse removal procedure when retightening nut do not make tight just snug the go another turn if you go to tight you will burn your bearings real fast.