Noh Ironogi Spotting Scopes

Scope Ring Lapping

BMW "No Reverse" Transmission Problem

An automatic transmission is just that- automatic, consequently most people tend to pay very little attention to it until a major problem rears its ugly head.

Picture the scenario- you are driving along in the lap of luxury, the satellite radio blaring and the heated seats on. You have become accustomed to the comfort level and great driving experience brought to you by BMW.

You decide to stop at the local convenience store on your way home to grab some ice cream for the kids and a bottle of water for yourself. Upon returning to your car, you start it up, check your rear view mirror, put the shifter in reverse and then the unthinkable happens- the engine just revs as if it is in neutral and the car goes nowhere!

This article deals with the reasons behind an unexpected loss of reverse in certain BMW automatic transmission equipped vehicles, specifically the 3 series and 5 series vehicles that use the ZF5HP19 or steptronic transmission. This includes the popular 323i, 323ci, 325i, 328i, 330i, 525i, 528i, 530i, X3 and X5 models well as some others built in the 1999 to present model years.

To eliminate confusion, this does not apply to vehicles equipped with the GM 5L40 E transmission, just the ones with the sometimes problematic ZF5HP19. The 5L40 E has some issues of its own that are beyond the scope of this article but are certainly going to be the subject of another.

The failure rate for these transmissions seems to be very high and is expected to become much more of a problem as time goes by.

Typically, the vehicle is working perfectly while driving forward but when it is put in reverse there is a complete and permanent loss of movement to back up.

Reverse is typically a major feat for any transmission to accomplish- imagine the demands that are placed on a gearbox as it is asked to reverse the torque of your engine so that you can back up your nearly 4000 pound vehicle.

By far, the most common cause of the reverse problem in BMW's is the failure of the D-G clutch drum. Specifically, the snap ring that retains the D or reverse clutch breaks out of the clutch drum resulting in an inability for the clutch pack to apply.

The good news is that there is hope in regards to a proper repair. The factory has released an updated part that so far appears to be a permanent fix for this problem.

In our testing and in conjunction with several hundred successful repairs at our facilities, the new part seems to be metallurgically superior in several ways.

We have found that there is an improved radius area as well as slightly thicker casting. In addition to this, the grove that retains the snap ring is also relocated further away from the edge of the drum.

With this issue addressed and attention to detail in several other areas of the ZF5HP19 unit, the transmission can be repaired to "better than new" condition by a competent transmission rebuilder / remanufacturer. In fact, when properly repaired, the ZF gearbox becomes quite robust and can provide an almost indefinite service life.

About the Author

Joe Sirugo is co-owner of Trans Specialties and has been in the transmission repair industry for over 20 years

Tipton 305172 1 in. and 30Mm Wheeler Scope Ring Alignment and Lapping Kit $87.01 Aligning and lapping of new rings should become the standard practice whenever a scope is installed on a quality firearm. The alignment bars in this kit provide for perfect alignment of both rings and will also diagnose any misalignment problem vertical or horizontal giving you the opportunity to fix the problem before damaging the scope or experiencing frustration at the range. The lapping bar is used to lap the rings to improve alignment reduce stress on the scope and improve the grip of the rings on the scope. It also serves as a lever to rotate dovetail rings into place. Lapping the rings can also minimize or prevent ring marring of the scope. Kit includes:. Two 1 alignment bars. Two 30mm alignment bars. 1 lapping bar. 30mm lapping bar. Lapping bar handle. 220 grit lapping compound. Complete instructions.

Wheeler 305172 Ring Algn Lapping Kit 1 in. 30Mm $90.36 Scope Ring Alignment Lapping Kit 1 30mm. Manufacture ID: 305172. Aligning and lapping of new rings should become the standard practice whenever a scope is installed on a quality firearm. The alignment bars in this kit provide for perfect alignment of both rings and will also diagnose any misalignment problem vertical or horizontal giving you the opportunity to fix the problem before damaging the scope or experiencing frustration at the range. The lapping bar is used to lap the rings to improve alignment reduce stress on the scope and improve the grip of the rings on the scope. It also serves as a lever to rotate dovetail rings into place. Lapping the rings can also minimize or prevent ring marring of the scope. Kit includes:. Two 1 alignment bars. Two 30mm alignment bars. 1 lapping bar. 30mm lapping bar. lapping bar handle. 220 grit lapping compound. complete instructions

Wheeler 1 Inch Scope Mounting Kit $109.99 Wheeler Engineering has put 3 great products in one professional scope mounting kit. This kit has everything needed to do a professional job mounting your scope. It has a Firearm Accurizing Torque (F. A. T. ) Wrench with 10 bits designed for the majority of your scope mounting needs. Included is Scope Ring Alignment Bars, Scope Ring Lapping Bar with Handle, Level-Level-Level, TurboLock Thread Lock and an instructional DVD. Features: - Scope Ring Alignment Bars Scope Ring Lapping Rod - Lapping Compound Level-Level-Level - FAT Wrench with 10 bits Thread Locking Compound - Scope Mounting DVD

Wheeler 130Mm Scope Mount Kit 545-454 $137.09 Wheelers Scope Mounting Kit features professional grade bits and the F.A.T. wrench to properly secure fasteners without deformation. Also featuring 10 gunsmithing screwdriver bits, lapping bars, ring alignment bars, for 1 inch/30MM rings, lapping bar handle, lapping compound, thread lock and an instructional DVD. Type: Gun Scopes

Dednutz 32700 Dednutz Scope MountBlack $140.38 Precisionmachined 1piece ring mount. Eliminates misaligned scope rings scope damage. Bolts easily to all 4 holes on firearm. Rigid designno moveable parts between firearm scope. Extra lightweight super strong. Aligns with receiver for more pleasing look. No extrusions. Includes socket head cap screws. Custom made to fit each type firearm. Anodized finish will not rust. No lapping.

Dednutz 10032 Dednutz Scope MountBlack $114.06 Precisionmachined 1piece ring mount. Eliminates misaligned scope rings scope damage. Bolts easily to all 4 holes on firearm. Rigid designno moveable parts between firearm scope. Extra lightweight super strong. Aligns with receiver for more pleasing look. No extrusions. Includes socket head cap screws. Custom made to fit each type firearm. Anodized finish will not rust. No lapping. 1 Matte. Color: Black.

Wheeler 409501 Scope Ring Alignment Bars#44; 30Mm $34.06 Scope Ring Alignment Bars 30mm . Manufacture ID: 409501. Proper scope installation is critical to the accuracy of your firearm. Aligning and lapping of new rings should become the standard practice whenever a scope is installed on a quality firearm. Alignment bars provide for perfect alignment of both rings and will also diagnose any misalignment problem vertical or horizontal giving you the opportunity to fix the problem before damaging the scope or experiencing frustration at the range. 30mm

Dednutz 11111 Dednutz Scope MountBlack $114.06 Made of Billit tempered 6061T6 aluminum. Machined one piece design. Installation requires no special tools. Perfect ring alignment no lapping required. Full 1/2 thread length in rings. Finish: Black. Tube Diameter: 1 .

Dednutz 11003 Dednutz Scope MountBlack $114.06 Machined one piece design for extreme accuracy. No moving parts between firearm and scope. Lightweight. Approximately a third of the weight of steel. Fast installation and requires no special tools. Eliminates need for windage screws. Perfect ring alignment. No lapping required. Eliminates or reduces scope damage from tightening rings. Ring placement allows extra eye relief adjustment. Up to 4 times more thread length in rings....full 1/2 . Made of billet aluminum. Tempered 6061T6. Grade 8 hardened steel screws. Barrel Length: 5 .

Dednutz 20600 Dednutz Scope MountBlack $114.06 Machined one piece design for extreme accuracy. No moving parts between firearm and scope. Lightweight. Approximately a third of the weight of steel. Fast installation and requires no special tools. Eliminates need for windage screws. Perfect ring alignment. No lapping required. Eliminates or reduces scope damage from tightening rings. Ring placement allows extra eye relief adjustment. Up to 4 times more thread length in rings....full 1/2 . Made of billet aluminum. Tempered 6061T6. Grade 8 hardened steel screws. Style: 1 . Misc: Medium. Finish: Matte Black.

Dednutz 42200 Dednutz Scope MountBlack $114.06 Machined one piece design for extreme accuracy. No moving parts between firearm and scope. Lightweight. Approximately a third of the weight of steel. Fast installation and requires no special tools. Eliminates need for windage screws. Perfect ring alignment. No lapping required. Eliminates or reduces scope damage from tightening rings. Ring placement allows extra eye relief adjustment. Up to 4 times more thread length in rings....full 1/2 inch. Made of billet aluminum. Tempered 6061T6. Grade 8 hardened steel screws. Style: 1 . Misc: Medium. Finish: Matte Black.

Lapping It Up $64.99 Lapping It Up - Art Print

Wheeler 1In 30Mm Cmbo Scpe Kit 305-172 $70.28 Wheeler Scope Ring Alignment and Lapping Kit Combo - One Inch And 30mm Kit includes: Two 1inch alignment bars, Two 30mm alignment bars, 1inch lapping bar, 30mm lapping bar, lapping bar handle, 220 grit lapping compound and complete instructions. Type: Gun Scopes

Dog Lapping Water $10 Dog Lapping Water

NcSTAR Illuminated Rifle Scope - 3-12x56E Scope / Green / Ring SEFB31256G $65 NcSTAR Illuminated Rifle Scope - 3-12x56E Scope / Green / Ring SEFB31256G Riflescope

NcSTAR Regular Rifle Scope - 3-9x40 Black Scope / Ruby / Ring SFB3940R $28 NcSTAR Regular Rifle Scope - 3-9x40 Black Scope / Ruby / Ring SFB3940R

Kitten Lapping at Cup $14.99 Kitten Lapping at Cup - Premium Poster

Waves Lapping on Beach $29.99 Waves Lapping on Beach - Photographic Print

NcSTAR Regular Rifle Scope - 3-9x40 Rubber Scope / Ruby / Ring SFR3940R $40 NcSTAR Regular Rifle Scope - 3-9x40 Rubber Scope / Ruby / Ring SFR3940R Riflescope

NcSTAR Illuminated Rifle Scope - 3-12x56E Silver Scope / Green / Ring SEFS31256G $68 NcSTAR Illuminated Rifle Scope - 3-12x56E Silver Scope / Green / Ring SEFS31256G Riflescope

Wheeler 299849 Bore Lapping Kit $46.44 Bore Lapping Kit . Manufacture ID: 299849. Bore Lapping Kit

Weaver 849722 StandardDeluxe Scope Mounting Kit $122.59 Deluxe kit includes torque wrench SureThread common bits level system lapping bar 1 alignment pins and lapping compound. Contains everything needed for precision scope mounting. Deluxe kit is excellent for the professional or novice gunsmith. Rugged storage case.

Dednutz 10005 Dednutz Scope MountSilver $114.06 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Thompson Encore/Omega. 1 scope tube. Medium Mount. Color: Silver.

Dednutz 10006 Dednutz Scope MountBlack $114.06 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Thompson Encore/Omega. 1 scope tube. Medium Mount. Color: Black.

Dednutz 52500 Dednutz Scope MountBlack $114.06 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Browning BAR Long Action BLR. 1 scope tube. Medium Mount. Color: Black.

Dednutz 30002 Dednutz Scope MountBlack $140.38 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Thompson Encore/Omega. Extended Eye Relief. 1 scope tube. Low Mount. Color: Black.

Dednutz 20200 Dednutz Scope MountBlack $114.06 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Savage New Round Receiver Short Action. one inch scope tube. Right Hand Medium Mount. Color: Black.

Dednutz 12700 Dednutz Scope MountBlack $114.06 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Remington700Long Action. 1 scope tube. High Mount. Color: Black.

Dednutz 18700 Dednutz Scope MountBlack $114.06 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Remington 700Long Action. 1 scope tube. Right Hand medium Mount. Color: Black.

Dednutz 20700 Dednutz Scope MountBlack $114.06 DedNutz Game Reaper scope mounts are precision machined from the best material on the market top grade billet aluminum. Each Game Reaper scope mount is created from a solid block of aluminum. Aluminum absorbs shock better than steel. Deadnutz s Rigid design has no moveable parts between the firearm and the scope. No extrusions. Each Game Reaper scope mount is precision machined from start to finish. Game Reaper scope mounts are anodized to last the life of your firearm. No Lapping Required. Mount will not rust. Remington 700Short Action. 1 scope tube. Right Hand Medium Mount. Color: Black.