MASSEY FERGUSON 2660 - Hydraulic Lift System; Hydrostatic Steering Wheel

01B01-7
HD Series 2600
Technical Specifications
01
9 - Hydraulic Lift System 2650 2660 2670 2680
Category ................................................................................................... II
Linkage type ............................................................................................. Fixed ball ends or telescopic ball ends.
Maximum lift capacity at the lower links with
links horizontal (Footstep version) ................... 2100 kg (4636 lb) 2100 kg (4636 lb) 2500 kg (5510 lb) 2500 kg (5510 lb)
Maximum lift capacity at the lower links with
links horizontal (Cab version) ........................... 2500 kg (5510 lb) 2500 kg (5510 lb) 2500 kg (5510 lb) 2500 kg (5510 lb)
Pump type ......................................................... Four-cylinder scotch yoke pump, driven from the forward end of the PTO shaft supplying
oil under pressure to the linkage cylinder.
Maximum pump pressure ........................................................................ 210 bar (2986 psi)
Maximum out put - Linkage pump ................... 17 liter/min (4.49 gal/min) 27 liter/min (7.1 gal/min)
Filtration .................................................................................................... 150 micron washable strainer
9.1 - Auxiliary Hydraulic System
Pump type ................................................................................................ Gear type, located on right-hand side of engine.
Pressure ................................................................................................... 190 bar (2755,7 psi)
Oil flow ...................................................................................................... 37.9 liters/min (10.17 US gal/min)
Oil flow with combined flow activated (if fitted) 55.5 liters/min (14.66 US gal/min) 67.8 liters/min (17.3 gal/min)
Control valve ..................................................... Double or triple section, mounted on the rear of tractor, permits to operate Single-
acting and Double-acting type cylinders.
10 - Hydrostatic steering wheel
Operation ........................................................... The rear gear pump (1) is responsible for the steering wheel drive. After this, the oil is
sent to the independent hydraulic control valve.
Maximum pressure ........................................... Between 110 and 130 bar (1595 and 1885 PSI).
Maximum flow (2WD) ............................................................................... 9,6 liter/min (3.53 gpm)
Maximum flow (4WD) ............................................................................... 4,8 liter/min (1.26 gpm)
Hydrostatic unit ................................................. Sauer Danfoss, with closed center and a Load Sensing type, priority valve coupled.
Oil filtering ......................................................... Filtered by the oil filter in the transmission and hydraulic system. The hydraulic system
and the steering use the same oil.
10.1 - Identifying hydraulic pumps:
1 - Front pump: (38,5 liters/min@2200 rpm)(8,5
gpm@2200 rpm) Actuates the auxiliary
functions such as the IPTO and the four-wheel
drive.
2 - Rear pump: (30,8 liters/min@2200 rpm)(6,8
gpm@2200 rpm) Actuates the steering wheel
and then the hydraulic control valve.
Flow is prioritized to the steering through the
priority valve.
1
2
Fig. 1