Hummer H3. Manual — part 213

Special Tools. Limited access and larger hole repair may process better using a tap wrench. An
extension J 43965 may also be necessary to drive the thread repair tooling dependent on access to
the hole being repaired. See Special Tools.

Fig. 473: Drilled Hole Centerline
Courtesy of GENERAL MOTORS CORP.

It is critical that the drilling, counterboring and tapping of the hole to be repaired follows the
same centerline as the original hole.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 474: Identifying Proper Drilling Angle
Courtesy of GENERAL MOTORS CORP.

During the drilling and tapping of the hole being repaired ensure the tooling is consistently
machining perpendicular to the surface of the base material.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 475: View Of Tapping Guide
Courtesy of GENERAL MOTORS CORP.

If the threaded hole being repaired has a base surface perpendicular to the hole centerline,
tapping guides are available to aid in tapping the hole.

Thread Repair

Tap Size

Tap Guide

Tape Size

Tape Guide

Tap Size

Tape Guide

-

J 42385-

-

J 42385-

-

J 42385-

6 x 1.0

729

10 x 1.5

731

14 x 1.5

736

8 x 1.25

730

12 x 1.5

732

20 x 1.5

737

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Standard Thread Repair - Flush Hole

Fig. 476: View Of Bushing Type Insert & Base Material
Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.

IMPORTANT: The use of a cutting type fluid GM P/N 1052864 (Canadian P/N

992881), WD 40® or equivalent is recommended when performing
the drilling, counterboring and tapping procedures.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3