File 38 of 68
Prev | Next

pinionshaftkit.jpg | Hits: 5094 | Posted on: 6/6/07 | View original size (281.34 KB)

Differential Pinion Shaft Lock Bolt Extractor Kit (DPK-01)
For most G.M. and Ford Integral (WER type) differentials.

Recommended Procedure - Read thoroughly before starting.
NOTE: Before starting extracting procedure, user should cover appropriate area in dif-
ferential where drilling will be done with a clean rag to prevent metal filings from
remaining within differential and causing possible damage of premature wear.
SPECIAL NOTE:Safety recommendations require the use of safety goggles or other
appropriate eye protection during the entire extracting procedure.

After removable portion of broken lock bolt has been removed, determine which drill guide bolt (supplied in kit) should be used. This depends on where the break occurs. If quite a few carrier threads are left clear, then the long drill guide bolt should be used. If very little of the bolt came out, the short drill guide bolt should be used. In most cases the long drill guide bolt is used.

When the proper drill guide bolt has been selected, thread it into the lock bolt hole until it bottoms against remaining portion of broken lock bolt. Note: finger-tighten only. Over-tightening can distort the carrier threads, making removal more difficult. If the threads are already distorted, they should be cleaned up with a suitable tap or thread chaser before proceeding.

Next, secure the drill bit (supplied in kit) into an electric hand drill of 3/8" capacity or less. (Drills of larger capacity are not recommended because of their size). Rotate the carrier assembly to obtain the straightest drill angle possible. Insert cutting end of drill bit into hole in center of drill guide bolt and drill into remaining broken portion of lock
bolt, approximately 1/4". Remove drill bit several times during drilling procedure to clear metal shavings.

After drilling is completed, remove drill guide bolt and insert one of the two extractors (supplied in kit) into the hole previously drilled. The extractor to be used depends on the circumstances of the break. In most cases, the tapered square extractor will easily remove the remaining broken portion with finger strength only. However, if resistance is encountered, then the spiral extractor should be used with the aid of a small wrench or suitable tool. In either case, by turning the extractor counterclockwise, the remaining broken portion of
the lock bolt should, with little effort, be easily removed.

This kit is designed to give an excellent chance of removing the remaining broken portion of the lock bolt. Therefore, the circumstances of the breakage and skill of the user will determine if the remaining broken portion can be successfully removed in this manner.

WARRANTY - Seller accepts no liability other than replacement or refund for defective materials or workmanship. Buyer assumes all risk and liability as to the use of the product purchased and holds seller harmless from liability arising out of loss, damage or injury to persons or property of buyer or others arising out of the use or possession of this product.

JohnDow Industries, Inc.
151 Snyder Ave.
Barberton, Ohio 44203
330-753-6895