8
Service
Training
HYDRAULIC SYSTEM
Pump (750/760/860)
• Tandem gear pumps, TX750/760 Inner pump @ 21 gpm, Outer Pump @ 16.7 gpm, TX860 both pumps @ 21 gpm.
• Combined flow..TX750/760 - 38 gpm(142 L/min), TX860 42 gpm(159 L/min) @ 2200 rpm / Main Relief Valve (MRV) 3250 psi(225 bar)
Loader control valve
• Two spool open center mono block valve.
• Single lever operation of bucket and lift spools.
• An optional three spool closed center valve is available for clamshell bucket.
• Maximum working pressure ....................................................................... 3250 –0/+100 psi (225 – 0/+7 bar)
Backhoe control valve
• The backhoe control valve is a closed center seven spool mono block.
• The seven spool Valve controls the boom, dipper, bucket, swing, stabilizer, extendable dipper and auxiliary circuits.
• Circuit relief valves protect the boom, dipper, bucket, swing, extendable dipper and auxiliary circuits.
• Optional extendable dipper / hammer (auxiliary circuit)uses a solenoid operated changeover valve is used to divert hydraulic flow to
either the extendable dipper or hammer. A separate foot pedal is used to operate a spool.
• Optional sideshift backhoe has added Solenoid valves to operate the sideshift clamp.
• Optional craning valve (only on center mount backhoe) and optional digger bucket quick attach.
• Maximum working pressure ...................................................……………. 3250 –0/+100 psi (225 – 0/+7 bar)
Filtration
• A return circuit, 13-micron interchangeable cartridge filter.
VIBRATION
• The machinery safety directive 93/392/EEC requires that machinery be vibration tested. These machines were all measured in
hand vibration tests to be less than 2.5 m/s 2. For body vibrations, these machines were all measured to be less than 0.5 m/s 2.
CAPACITIES
• Fuel tank ........................................................................ 33.0 US Gal (120 ltr)
• Hydraulic reservoir .........................................................12.4 US Gal (45 ltr)
• Engine (with filter) .......................................................... 3.0 US Gal (10.7 ltr)
• Front drive axle (750/760/765 only) ................................2.2 US Gal (8 ltr)
• Front axle reduction gear (each) (750/760/765 only) .....0.27 US Gal (1.0 ltr)
• Rear axle (750/760/860 only)...........................................6.2 US Gal (22.5 ltr)
• Transmission (Synchroshuttle only)................................4.1 US Gal (15 ltr)
• Cooling system................................................................4.5 US Gal (16.5 ltr)
CYCLE TIMES 760 (with Multipurpose Bucket) Engine set to 2200 rpm, Hydraulic oil at 55 - 60°C.
• Raising (with self level)....................................................4.4 seconds
• Lowering (power down) ................................................. 2.9 seconds
• Lowering (float)................................................................4.0 seconds
Dumping (at maximum height) ........1.1 seconds Dumping (at maximum height)
To Next Page
Loading...