hitachi — DISASSEMBLE TRAVEL MOTOR

UNDERCARRIAGE / Travel Device IMPORTANT: Do not remove the inner race of roller bearing (6) from shaft (7) and the outer race of roller bearing (6) from case (1) unless necessary. 11. Remove the inner race of roller bearing (6) from shaft (7) by using a press. IMPORTANT: Keep the outer race of roller bearing (6) properly so that it can be installed in the same direction before disassembling. 12. Remove the outer race of roller bearing (6) from case (1) by using a bar and hammer. 13. Remove oil seal (5) from case (1). CAUTION: The cylinder block (14) assembly weight: 20 kg (40 lb) IMPORTANT:

If cylinder block (14) needs to be replaced, cylinder block assemblies (10 to 15) with valve plate (15) should be replaced. 7. Remove cylinder block (14) assemblies (10 to 15) from case (1). NOTE: Hold and rotate cylinder block (14) left and right lightly by both hands in order to remove slowly. 8. Remove retainer (11), pistons (10) (9 used), holder (12) and springs (13) (9 used) from cylinder block (14). IMPORTANT: Do not damage the sliding surface of swash plate (9). Piston (4) and steel ball (8) may be removed with swash plate (9) together. Do not drop piston (4) and steel ball (8). 9.

Remove swash plate (9), pistons (4) (2 used), springs (3) (2 used) and steel balls (8) (2 used) from case (1). NOTE: If it is difficult to remove steel ball (8), that means steel ball (8) has been set in case (1), so use some kerosene or thinner, etc. in order to clean grease first. Then remove steel ball (8) from case (1) by using a magnet. IMPORTANT: Do not damage the spline part of shaft (7) and contact part of oil seal (5). Oil leakage will occur if they are damaged. 10. Remove shaft (7) from case (1). At this time, the inner race of roller bearing (6) is removed with shaft (7) together. W3-2-37