Description
Messersi Excavators Service Handbook
Messersi Excavators Index:
DIMENSIONS AND LIFTING CAPACITY………………………………………………………………………2
1.1. M-13 ……………………………………………………………………………………………………………2
1.2. M-16U ……………………………………………………………………………………………………………3
1.3. M-16BV……………………………………………………………………………………………………………4
1.4. M-18BE……………………………………………………………………………………………………………5
1.5. M-22U ……………………………………………………………………………………………………………6
1.6. M-28U ……………………………………………………………………………………………………………7
1.7. M-28 ……………………………………………………………………………………………………………8
1.8. M-35 ……………………………………………………………………………………………………………9
1.9. M-38U ………………………………………………………………………………………………………….10
1.10. M-50 ………………………………………………………………………………………………………….11
1.11. M-55U ………………………………………………………………………………………………………….12
1.12. M-60U ………………………………………………………………………………………………………….13
2. HYDRAULIC DIAGRAM ……………………………………………………………………………………………14
2.1. M-13 ………………………………………………………………………………………………………….14
2.2. M-16BV………………………………………………………………………………………………………….15
2.3. M-16U / M-18BE……………………………………………………………………………………………..16
2.4. M-22U ………………………………………………………………………………………………………….17
2.5. M-28U / M-38U ……………………………………………………………………………………………….18
2.6. M-28 / M-35 ……………………………………………………………………………………………………19
2.7. M-50 ………………………………………………………………………………………………………….20
2.8. M-55U ………………………………………………………………………………………………………….21
2.9. M-60U ………………………………………………………………………………………………………….22
3. ELECTRICAL DIAGRAM…………………………………………………………………………………………..23
3.1. M-13 / M-16U………………………………………………………………………………………………….23
3.2. M-16BV / M-18BE……………………………………………………………………………………………26
3.3. M-22U ………………………………………………………………………………………………………….30
3.4. M-28U / M-38U ……………………………………………………………………………………………….34
3.5. M-28 / M-35 ……………………………………………………………………………………………………37
3.6. M-50 ………………………………………………………………………………………………………….42
3.7. M-55U / M-60U ……………………………………………………………………………………………….43
4. EXTERNAL GEAR PUMPS……………………………………………………………………………………….54
5. AXIAL PISTON PUMP IN BENT AXIS DESIGN……………………………………………………………55
5.1. AXIAL PISTON PUMP IN SWASHPLATE DESIGN …………………………………………….55
6. DOUBLE AXIAL PISTON PUMP WITH VARIABLE DISPLACEMENT…………………………….58
7. SLEW MOTOR ………………………………………………………………………………………………………..60
8. PASSAGE SWIVEL JOINT………………………………………………………………………………………..61
9. TRACKS………………………………………………………………………………………………………………….62
9.1. TRACKS: MAIN CHARACTERISTIC …………………………………………………………………62
9.2. RUBBER TRACKS ADVANTAGES TOWARDS STEEL TRACKS AND
WHEELED MACHINES……………………………………………………………………………………64
9.3. TENSION OF RUBBER CRAWLER…………………………………………………………………..65
10. COMPLETE LOWER ROLLER ………………………………………………………………………………….66
11. COMPLETE UPPER ROLLER …………………………………………………………………………………..67
12. STEEL TRACKS………………………………………………………………………………………………………68
13. PLANETARY GEAR …………………………………………………………………………………………………69
13.1. HIGH REDUCTION RATIOS…………………………………………………………………………….69
13.2. TRANSLATIONAL REDUCTION UNIT………………………………………………………………70
14. CONTROL VALVE……………………………………………………………………………………………………72
