Ingersoll-Rand 7872-F, 7870-F-( ) Disassembly and Assembly of Tools, Motor Section, Head Section

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DISASSEMBLY AND ASSEMBLY OF TOOLS

Disconnect air supply from tool or shut off air supply and exhaust (drain) line of compressed air BEFORE performing maintenance or service to tool.

Before starting to disassemble or assemble this tool (any part or completely), be sure to read “Inspection,Maintenance and Instal- lation” section,

To minimize the possibility of parts damage and for convenience, the steps for disassembly or assembly listed on the following pages are recommended.

The basic sections and instructions for removing them from the tool are as follows:

MOTOR SECTION

Place head of tool in a suitable holding device, clamping on flats of head. Remove collet nut and collet insert. Insert a 5/32” hex type wrench thru collet body into end of rotor to secure rotor and un- thread and remove collet body from rotor. Remove lock nut (37253) and remove motor assembly from housing. See page B for complete disassembly of motor.

HEAD SECTION

Throttle components can be serviced without removing head sec- tion from tool. See page 9 and 10 for complete disassembly,

Image 6 Contents
Series Short Grinders At the air inlet of the toolCedures Failureto Observethe Followingwarningscould Resultin Injury Operate at 90 p.s.i.g .2 bar/620 kPa maximum air pressureRoutine Lubrication Requirements AIR Supply RequirementsRecommended Lubricants Operation Safety Guide for Portable Grinder USEModel Identification DON’TMounting Instructions for Mounted Wheels Mandrel Overhang DimensionGrinding Wheel Mounting Instructions Mounting Instructions for Type 1 Grinding WheelsDisassembly and Assembly of Tools Motor SectionHead Section Typical Cross Section of Tool Disassembly AssemblyMotor Section Remove nut 36776 and valve components Head when assemblingHead Section From headDisassemblyassembly Erickson 3-PIECE Collet Assembly Accessories41753- 3-PIECE Collet Assembly LOCK-OFF Lever AssemblyTrouble Shooting Dimensional Data