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)
