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Ccm 29er crank bearings are junk,constantly adjusting preload or replacing bearings,what can I do.

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Posted on Jan 02, 2017

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SOURCE: ring and pinion adjustment

hello sir ...

RING AND PINION TOOTH CONTACT PATTERN.—The ring and pinion tooth contact pattern is used to double-check ring and pinion adjustment. To check the accuracy of your adjustments, coat the ring gear teeth with a thin coat of red lead, white grease, hydrated ferric oxide (yellow oxide or iron), or Prussian blue. Turn the ring gear one way and then the other to rub the teeth together, producing a contact pattern on the teeth. Carefully note the contact pattern that shows up on the teeth where the substance used has been wiped off. A good contact pattern is one located in the center of the gear teeth (fig. 5-21). Figure 5-21 shows several ring and pinion gear contact patterns. Study each and note the suggested correction for the faulty contact

Posted on Jul 06, 2008

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1 Answer

1992 buick lesabre wheel bearring issues


IF by issues you mean failing continuously then check the following points. Bearings fail from several reasons --1 over preloaded==excessive nut tension 2 lack of adjustment ==lack of nut tension 3 lack of or excessive lubricant==4 incorrect type of lubricant== 4 not replacing the bearings as a unit ==5 unbalanced wheels==6 wheel alignment issues

Aug 31, 2013 | Cars & Trucks

3 Answers

Ring and pinion adjustment


hello sir ...

RING AND PINION TOOTH CONTACT PATTERN.—The ring and pinion tooth contact pattern is used to double-check ring and pinion adjustment. To check the accuracy of your adjustments, coat the ring gear teeth with a thin coat of red lead, white grease, hydrated ferric oxide (yellow oxide or iron), or Prussian blue. Turn the ring gear one way and then the other to rub the teeth together, producing a contact pattern on the teeth. Carefully note the contact pattern that shows up on the teeth where the substance used has been wiped off. A good contact pattern is one located in the center of the gear teeth (fig. 5-21). Figure 5-21 shows several ring and pinion gear contact patterns. Study each and note the suggested correction for the faulty contact

Jul 05, 2008 | 1991 Ford F250

1 Answer

Front bearing


Remove the hub and check the condition of the bearings. If they are not as new replace both bearings and both cups. Grease properly and reassemble If they have a spacer between the bearings tighten the axle nut to specifications and pin If they are 2 taper roller bearings adjust to a no end float no preload position and pin the nut

Mar 03, 2013 | 1997 Mercury Sable

1 Answer

Changing front rotors


Capri rotor replacement is only done by a mechanically inclined person with tools. The rotors have the front bearings pressed in, so the rotor must be removed from the axle. Bearings must be pressed in, and preload must be adjusted for the new rotor. If you do not understand any of this then find a mechanic. Expect to pay at least $150 per rotor replacement.

An alternative is if you can find a junk yard Capri with decent rotors, then it can be installed onto your vehicle without the need for a mechanic to do bearing replacement. Keep in mind though that the junk yard Capri may have bad bearings...Good luck...Chris

Sep 11, 2011 | 1991 Mercury Capri

1 Answer

What is needed to remedy right hand front wheel bearing play on a 1990 d21 4X4 ute


replace the bearing or wheel hub assembly.

REMOVAL & INSTALLATION 2wd Models NOTE: Refer to wheel bearing service and bearing preload adjustment procedures found in Section 1.
  1. Raise the front of the truck and support it with safety stands. Remove the wheels.
  2. Remove the brake caliper and suspend it with wire, out of the way. Remove the caliper torque plate if equipped.
  3. Remove the dust cap and then remove the cotter pin, lock washer (if equipped) nut lock and nut.
  4. Pull the hub/disc assembly off the spindle with the outer bearing. Don't let the bearing fall out.
  5. Pry the inner oil seal out and remove the inner bearing. To install:
  6. Clean and inspect the bearings and outer races.
  7. Using a brass drift and a hammer, drive out the bearing outer race. Press a new one into position.
  8. Pack the bearings with grease until it oozes out the other side. Coat the inside of the hub and cap with grease.
  9. Position the inner bearing into the hub, coat the oil seal with grease and press it into the hub.
  10. Press the hub assembly onto the spindle and install the outer bearing and thrust washer.
  11. Install the hub nut. Turn the hub a few times to seat the bearings and then loosen the nut until there is 0mm axial play. Using a spring tension gauge, check that the preload (with new grease seal installed) is 2.2–6.4 lbs. (9.8–28.4N)
  12. Install the lock-nut, new cotter pin and hub grease cap.
  13. Install the brake torque plate. Install the brake caliper.
  14. Install the wheels and lower the truck.
4wd Models The hub and bearing service procedures for a 4wd models are basically the same as those for a 2wd version, with the exception of removing the free running hub assembly and the bearing preload adjustment. Refer to Sections 1 and 7 for additional information. Adjust the preload after the wheel bearing is replaced or the front axle assembly is reassembled. BEARING PRELOAD ADJUSTMENT
  1. Thoroughly clean all parts and pack the wheel bearings.
  2. Apply grease to threaded portions of the spindle, grease seal lip and wheel hub.
  3. Tighten the wheel bearing lock-nut with a socket and torque wrench to 58–72 ft. lbs. (78–98 Nm).
  4. Rotate the hub in both directions a few times to seat the bearings. Loosen wheel bearing lock-nut.
  5. Retighten the lock-nut to 0.4–1.1 ft. lbs. (0.5–1.5 Nm).
  6. Turn wheel hub several times in both directions.
  7. Retighten the lock-nut to 0.4–1.1 ft. lbs. (0.5–1.5 Nm). Fig. 1: Exploded view of the front axle assembly — 2wd models 86718030.gif
    Fig. 2: Removing the bearing outer races 86718032.gif
    Fig. 3: Packing the wheel bearing with grease 86718033.gif
    Fig. 4: Pack the lip cavity of grease seal with grease 86718034.gif
    Fig. 5: Exploded view of the front axle assembly — 4wd models 86718031.gif

  8. Measure wheel bearing axial end-play. The wheel bearing end-play specification is 0.
  9. Install lock washer by tightening the lock-nut within 15–30 degrees.
  10. Turn wheel hub several times in both directions. Wheel bearing should be seated correctly.
  11. If necessary, measure wheel bearing preload. NOTE: Measure wheel bearing preload with a spring-type gauge; measure at wheel hub bolt, with tire removed. The hub assembly should rotate with 1.6–4.7 lbs. (0.73–2.13 kg) of pressure.
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Jul 28, 2010 | 1991 Nissan Pickup

1 Answer

Is there an adjustment on a 1999 Suburban steering gear box. It was replaced 6 months ago along with the pitman, but it feels to sensitive or loose??


Yes there are Pitman shaft over-center preload and worm thrust bearing preload.There are special procedures and tools needed for both of these and the steering gear needs to be out of vehicle and drained.Hope this helps.

Feb 14, 2010 | 1999 GMC Suburban

1 Answer

I am replacing the seal on the rear penion i need touqe specs on the nut


PINION FLANGE & OIL SEAL

CAUTION: Following procedure must be used to retain proper pinion bearing preload. Failure to follow procedure may result in premature axle assembly or component failure. Ensure pinion bearing preload is checked before disassembly, as previous pinion bearing preload will be used during reassembly.

Removal

1. Raise and support vehicle. Scribe reference mark on drive shaft-to-pinion flange on differential for reassembly reference. Remove bolts and "U" joint straps at pinion flange on differential.
Disconnect drive shaft from differential.
2. Remove rear wheels and brake drums to prevent any drag that may affect pinion bearing preload reading. Using INCH-lb. torque wrench, measure amount of force required to rotate pinion. This is pinion bearing preload. Record pinion bearing preload for reassembly reference.
3. Using Holder (6719), hold pinion flange. Remove pinion nut and washer. Scribe reference mark on pinion flange-to-pinion for reassembly reference. Using appropriate puller, remove pinion flange from pinion. Remove oil seal from axle housing.

Installation

1. Ensure oil seal surface in axle housing is clean. Coat lip of oil seal with gear lube. Install oil seal using appropriate seal installer. Drive oil seal into axle housing until oil seal installer contacts axle housing.
2. Install pinion flange on pinion with reference mark aligned. Using appropriate pinion flange installer, install pinion flange on pinion.

CAUTION: Washer must be installed on pinion with convex side of washer facing outward (away from pinion).

3. Install washer on pinion with convex side of washer facing outward (away from pinion). Install NEW pinion nut. Tighten pinion nut to 210 ft. lbs. (285 N.m). Rotate pinion several times to seat pinion bearings.

CAUTION: DO NOT overtighten or loosen then retighten pinion nut when adjusting pinion bearing preload. If pinion nut is overtightened, collapsible spacer on pinion must be replaced.

4. Rotate pinion using INCH-lb. torque wrench. Rotating torque should be equal to reading recorded in removal step 2) , plus 5 INCH lbs. (.056 N.m). If rotating torque is low, tighten pinion nut in small increments until proper rotating torque is obtained.
5. To install remaining components, reverse removal procedure using NEW "U" joint straps and bolts. Ensure all reference marks are aligned. Tighten bolts to specification. Check lubricant level and add if necessary.




Jan 23, 2010 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Pull to left even when just rolling, no damage that i can see


Bad, mismatched, improper tires, Wheel bearings, wheel bearing preload adjustment steering head bearings, steering head preload adjustment. misaligned wheels swing arm bushings or bearings, swing arm bearing preload, worn defective shock, bent frame, rims. forks. misaligned forks. fork stiction.
Prevention is in making all above are correct., a steering damper won't fix it, it will only hide the problem!!!

Oct 31, 2009 | 2008 Suzuki B-king

1 Answer

Pinion nut torque spec chev


Axle Preload and Backlash Specifications 8.0 Axle Preload and Backlash Specifications Application
Specification
Metric
English
Backlash
0.08-0.25 mm
0.003-0.010 in
Backlash (Preferred)
0.13-0.18 mm
0.005-0.007 in
Pinion Bearing Preload, New Bearings
1.7-3.4 N·m
15-30 lb in
Pinion Bearing Preload, Used Bearings
1.1-2.3 N·m
10-20 lb in
Pinion and Differential Case Bearing Preload, New Bearings
3.4-6.2 N·m
30-55 lb in
Pinion and Differential Case Bearing Preload, Used Bearings
2.8-5.1 N·m
25-45 lb in

May 17, 2009 | 2006 Chevrolet Colorado

1 Answer

Want to install a posi unit in my 2004 Ram Quad 2WD 9.25


REMOVAL
  1. Remove filler plug from the differential cover.
  2. Remove differential cover and drain the lubricant.
  3. Clean housing cavity with flushing oil, light engine oil or a lint free cloth. NOTE: Do not use steam, kerosene or gasoline to clean the housing.
  4. Remove axle shafts.
  5. Remove RWAL/ABS sensor from housing. NOTE: Side play resulting from bearing races being loose on case hubs requires replacement of the differential case.
  6. Mark differential housing and bearing caps for installation reference (REFERENCE MARKS).
  7. Remove bearing threaded adjuster lock from each bearing cap.
  8. Loosen differential bearing cap bolts.
  9. Loosen differential bearing adjusters through the axle tubes with Wrench C-4164 (THREADED ADJUSTER TOOL).
  10. Hold differential case while removing bearing caps and adjusters.
  11. Remove differential case. NOTE: Tag the differential bearing cups and threaded adjusters to indicate their location.

INSTALLATION
  1. Apply a coating of hypoid gear lubricant to the differential bearings, bearing cups, and threaded adjusters. A dab of grease can be used to keep the adjusters in position.
  2. Install differential assembly into the housing.
  3. Install differential bearing caps in their original locations (BEARING CAPS).
  4. Install bearing cap bolts and tighten the upper bolts to 14 N·m (10 ft. lbs.). Tighten the lower bolts finger-tight until the bolt head is seated.
  5. Perform the differential bearing preload and adjustment procedure. NOTE: Be sure that all bearing cap bolts are tightened to their final torque of 136 N·m (100 ft.lbs.) before proceeding.
  6. Install axle shafts.
  7. Apply a bead of orange Mopar Axle RTV Sealant or equivalent to the housing cover (COVER SEALANT). CAUTION: If cover is not installed within 3 to 5 minutes, the cover must be cleaned and new RTV applied or adhesion quality will be compromised.
  8. Install the cover and any identification tag and tighten cover bolts to 41 N·m (30 ft. lbs.).
  9. Fill differential with lubricant to bottom of the fill plug hole. Refer to the Lubricant Specifications for the correct quantity and type. NOTE: Trac-lok™ differential equipped vehicles should be road tested by making 10 to 12 slow figure-eight turns. This maneuver will pump the lubricant through the clutch discs to eliminate a possible chatter noise complaint.
DIFFERENTIAL BEARING PRELOAD AND GEAR BACKLASH The following must be considered when adjusting bearing preload and gear backlash:
  • The maximum ring gear backlash variation is 0.076 mm (0.003 in.).
  • Mark the gears so the same teeth are meshed during all backlash measurements.
  • Maintain the torque while adjusting the bearing preload and ring gear backlash.
  • Excessive adjuster torque will introduce a high bearing load and cause premature bearing failure. Insufficient adjuster torque can result in excessive differential case free-play and ring gear noise.
  • Insufficient adjuster torque will not support the ring gear correctly and can cause excessive differential case free-play and ring gear noise.
NOTE: The differential bearing cups will not always immediately follow the threaded adjusters as they are moved during adjustment. To ensure accurate bearing cup responses to the adjustments:
  • Maintain the gear teeth engaged (meshed) as marked.
  • The bearings must be seated by rapidly rotating the pinion gear a half turn back and forth.
  • Do this five to ten times each time the threaded adjusters are adjusted.

  1. Through the axle tube use Wrench C-4164 to adjust each threaded adjuster inward until the differential bearing free-play is eliminated. Allow some ring gear backlash approximately 0.25 mm (0.01 in.) between the ring and pinion gear. Seat the bearing cups with the procedure described above.
  2. Install dial indicator and position the plunger against the drive side of a ring gear tooth (RING GEAR BACKLASH). Measure the backlash at 4 positions, 90 degrees apart around the ring gear. Locate and mark the area of minimum backlash.
  3. Rotate the ring gear to the position of the least backlash. Mark the gear so that all future backlash measurements will be taken with the same gear teeth meshed.
  4. Loosen the right-side, tighten the left-side threaded adjuster. Obtain backlash of 0.076 to 0.102 mm (0.003-0.004 in.) with each adjuster tightened to 14 N·m (10 ft. lbs.). Seat the bearing cups with the procedure described above.
  5. Tighten the differential bearing cap bolts 136 N·m (100 ft. lbs.).
  6. Tighten the right-side threaded adjuster to 102 N·m (75 ft. lbs.). Seat the bearing cups with the procedure described above. Continue to tighten the right-side adjuster and seat bearing cups until the torque remains constant at 102 N·m (75 ft. lbs.)
  7. Measure the ring gear backlash. The range of backlash is 0.15 to 0.203 mm (0.006 to 0.008 in.).
  8. Continue increasing the torque at the right-side threaded adjuster until the specified backlash is obtained. NOTE: The left-side threaded adjuster torque should have approximately 102 N·m (75 ft. lbs.). If the torque is considerably less, the complete adjustment procedure must be repeated.
  9. Tighten the left-side threaded adjuster until 102 N·m (75 ft. lbs.) torque is indicated. Seat the bearing rollers with the procedure described above. Do this until the torque remains constant.
  10. Install the threaded adjuster locks and tighten the lock screws to 10 N·m (90 in. lbs.).

Jan 14, 2009 | 2004 Dodge Ram 1500

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