J&M 220 Operating And Maintenance Manual - page 35

MODEL 220 

HYDRAULIC 

IMPACT HAMMER 

IV. 

MAINTENANCE AND ADJUSTMENTS 

B.  MAINTENANCE - DAILY 

PRIOR TO STARTING THE POWER UNIT AT EACH SHIFT CHECK THE 

FOLLOWING ITEMS. 

Check wire rope on drive cap for wear, and rope clamps for tightness. 

Check for proper slack in wire rope holding drive cap.  Adjust for 1”-2" (25mm-

51mm) of space between hammer and recoil DAMPENER 

Check for loose bolts, nuts, tie-wires or other components.  Re-torque bolts and 

nuts on new hammer after 4 hours. 

Check recoil dampener for damage.  Dampener should not be less than 1-

1/4" (32mm) thick with hammer weight on dampener(See Section II-F). 

Check for adequate cushion material (See Section II-F). 

Check Engine oil level. 

Check engine water level. 

Lubricate trip valve lever at pivot and wheel on valve. 

Lubricate hammer guide columns. 

Torque 16 ram / cylinder rod connection bolts. 

Check the oil level in the hydraulic reservoir and refill if necessary. 

CAUTION: It is absolutely imperative that no dirt or other impurities be permitted to 

contaminate the hydraulic oil.  Any contamination will drastically shorten 

the life of the hydraulic system. 

Visually check all hoses for signs of damage or cuts that might cause hose failure 

during operation.  Be sure all connections are tight, especially the quick-disconnect 

couplers. 

Electrical components need no maintenance except periodic wiping with a clean, 

dry, lint-free cloth to remove dust. 

Perform all daily maintenance checks and lubrication indicated in the caterpillar 

operation guide. 

IV-2