9U-7990 Counter Bore Tool Group for 3176, 3300 and 3406 Series Engines

The 9U-7990 Counter Bore Tool Group is used to salvage engine block liner seats which are cracked or damaged. The liner seat is machined out and an insert is installed. The 9U-7990 Tool Group contains those items needed for every counterbore operation. Each counterbore operation will also require a cutter plate and a cutter bit. Refer to chart "Cutter Plate, Cutter Bit, and Machining Dimensions for Cylinder Block" for the correct cutter bit, cutter plate, counterbore depth and diameter for each insert. The 9U-7988 Riser Plate Group is available for use on 3300 Series Engines eliminating the need to remove adjacent cylinder liners.

Includes:

• 9U-7985 Basic Counterbore Tool Group (metal box included but not shown)
• 9U-7983 Offset Washer (3 required)
• 0L-1328 Bolt, 3/4-16 × 4" (3 required)
• 9U-7986 Base and Micrometer Group (case included but not shown) (part of 9U-7985 Basic Counterbore Tool Group)
• 5P-8248 Washer, 3/4" (3 required)
• 8T-0207 Bolt, M16 × 2 × 100mm (3 required)
• 5P-1656 Tool Remover Hook
• 5P-1630 Drive Adapter
• 0S-1569 Bolt, 5/8-11 × 4" (3 required)
• 5P-8247 Washer, 5/8" (3 required)
• 1U-7575 Allen Wrench, 1/8"
• 1U-7576 Allen Wrench, 5/32"
• 1U-7577 Allen Wrench, 3/16"
• 9U-7987 Master Gauge (part of 9U-7985 Basic Counterbore Tool Group)
• 9U-7984 Depth Set Spacer