- 112 -
REBUILD SPECIFICATIONS CHECK SHEETS
When rebuilding an NPK Hydraulic Hammer, it is necessary to inspect the piston (N),
hammer body (A), “A” sleeve (O), “B” sleeve (P), cylinder spacer/impact ring (J), tool
(HH), and tool bushings (F and G). Check tolerances after these components have
been repaired or polished.
MEASURE CRITICAL AREAS
The diagrams on the following pages show the critical locations that should be
measured. Carefully measure the areas shown with bore gages and micrometers.
FAX DIMENSIONS TO NPK SERVICE DEPARTMENT
Fill in the dimensions and fax this information to the NPK Service Department at
(440) 232-6294 for reusability evaluation.
A. HAMMER BODY
F. IMPACT BUSHING/UPPER TOOL
BUSHING
G. LOWER TOOL BUSHING
J. IMPACT RING/SPACER SECTION
N. PISTON
O. MAIN BODY “A” SLEEVE
P. MAIN BODY “B” SLEEVE
HH. TOOL
To Next Page
Loading...
