SHB 28Z3 EN – Edition 2.0 * 28z3s312.fm
3-31
Maintenance
3.13 Pressure check
General
• Run the machine warm before checking the pressure! Hydraulic oil temperature: 50 °C
min. (operating temperature)
• Pressure drop is checked by reducing revs from maximum to idling speed at constant
load
• Set the primary pressure limiting valves (PPLV) at maximum engine speed.
• The pressure settings are listed in chapter “Specifications”
– see
Hydraulic system
on page 2-3
•
Ensure utmost cleanliness of all measuring points and ports, micro measuring
lines and pressure gauges that are connected for checking pressure => even the
slightest traces of dirt, e.g. a grain of sand, can impair tightness and cause leaks
Overview of measuring ports (up to serial number AG02712)
Notice!
Measuring ports
Fig. 36
and
Fig. 37
differ in design only. The pressure check is
carried out in the same way.
Overview of measuring ports (from serial number AG02713)
1
2
Fig. 36: Measurement ports
3
4
Pos.
Designation
1
Pump 1 measuring port
MP 1
2
Pump 2 measuring port
MP 2
3
Pump 3 measuring port
MP 3
4
Pilot oil supply unit measuring port
MP 4
1
2
Fig. 37: Measurement ports
3
4
Pos.
Designation
1
Pump 1 measuring port
MP 1
2
Pump 2 measuring port
MP 2
3
Pump 3 measuring port
MP 3
4
Pilot oil supply unit measuring port
MP 4
Содержание 28Z3
Страница 1: ...Service Manual Track excavator Machine model 28Z3 Edition 2 0 Language en Article number 1000178347...
Страница 10: ...I 8 SHB 28Z3 EN Edition 2 0 28Z3s20IVZ fm...
Страница 11: ...Operation...
Страница 27: ...Specifications...
Страница 46: ...2 20 SHB 28Z3 EN Edition 2 0 28z3s210 fm Specifications...
Страница 47: ...Maintenance...
Страница 113: ...Engine...
Страница 115: ...SHB 28Z3 EN Edition 2 0 28z3s410 fm 4 3 Engine Alternator Tightening bracket Starter V belt Valve cover Exhaust manifold...
Страница 132: ...4 20 SHB 28Z3 EN Edition 2 0 28z3s410 fm Engine...
Страница 133: ...Hydraulic system...
Страница 169: ...bersicht der Hydraulikpl...
Страница 174: ......
Страница 175: ...Electrical system...
Страница 184: ...6 10 SHB 28Z3 EN Edition 2 0 28z3s610 fm Electrical system...
Страница 185: ...Die Stromlaufpl ne und K Optionen...
Страница 187: ......
Страница 188: ......
Страница 189: ...SHB 28Z3 EN Edition 2 0 28z3s612 fm 6 15 Electricalsystem Electrical sys tem Wiring harnesses overview...
Страница 199: ...SHB 28Z3 EN Edition 2 0 28z3s612 fm 6 25 Electricalsystem...
Страница 200: ...6 26 SHB 28Z3 EN Edition 2 0 28z3s612 fm Electrical system...
Страница 201: ...Options...
Страница 204: ...7 4 SHB 28Z3 EN Edition 2 0 28z3s710 fm Options Installation...
Страница 230: ...7 30 SHB 28Z3 EN Edition 2 0 28z3s710 fm Options...
Страница 231: ...PowerTilt PTS06...