810
Model Code Page
46. Power take ---off
6000--8950 460 2
1. 10. 1999
1. 4. 1997
Technical data
PTO is controlled with a control lever:
--- engine PTO is engaged at l ow engine revs.
--- ground speed PTO is engaged while the tractor is stationary
PTO shafts (changeable):
--- ø 35 mm (1 3/8”) ISO 500, as standard 6---splines............................................
--- ø 35 mm (1 3/8”) ISO 500, option 21---splines................................................
--- ø 45 mm (1 3/4”) ISO 500, option 20---splines................................................
--- ø 45 m m ( 1 3/ 4 ”) AS A E , o p t i on 6 --- sp li n e s..................................................
--- ø 38 mm GOST 3480---58, option 8---splines................................................
At outputs over 50 kW, use 21---splines shaft. In heavy ground speed PTO use is recommended the 20---splines s haft.
Use, if necessary, a torque limiting clutch (1000 Nm)
Engine PTO, ratios:
--- PTO speed 540 r/min at engine speed 1874 r/min............................................
--- PTO speed 540E r/min at engine speed 1539 r/min...........................................
--- PTO speed 1000 r/min at engine speed 2080 r/min...........................................
--- PTO speed 1000E r/min at engine speed (8350Hi) 1750 r/min..................................
Ground speed PTO, ratios on tr actors with a 2---step quick---shift gear ( concerning DPS models, see the next page) .
--- 1 rear wheel revolution corresponds (6100---6400, 8000; 30 km/h) 31,0764 PTO shaft revolutions.....................
--- 1 rear wheel revolution corresponds (6100---6400, 8000; 40 km/h) 31,0613 PTO shaft revolutions.....................
--- 1 rear wheel revolution corresponds (6600, 8100, 8400; 30 km/h) 40,9799 PTO shaft revolutions.....................
--- 1 rear wheel revolution corresponds (6600, 8100, 8400; 40 km/h V) 40,9600 PTO shaft revolutions....................
--- 1 rear wheel revolution corresponds (6600, 8100, 8400; 40 km/h F) 30
,2796 PTO shaft revolutions....................
--- 1 rear wheel revolution corresponds (6600, 8100, 8400; 50 km/h) 32,6308 PTO shaft revolutions.....................
PTO multi---disc clutch:
--- clutch pressure 1,8 MP a (from low pressure circuit of hydraulic system).
--- PTO clutch solenoid valve is fitted on the servo valve block. In the PTO clutch there is fitted a PTO brake. In addition, the system
has a cushioning valve for engagement.
--- friction discs 7 pcs (---660476). 6000---6400 6 pcs (660477---) and 6600---8400 8 pcs (660477---)
--- steel discs 6 pcs (---660476). 6000---6400 5 pcs (660477---) and 6600---8400 7 pcs (660477---)
Note! On the latest 6000---8750 tractors there are 8 friction discs and 7 steel discs in the PTO clutch.
PTO unit differences on different transmission types on tractors with 2--step quick--shift gear:
(Markings on the later PTO units, see the next page 460/2A).
Transmissio n 30 km/h Transmission 40 km/h
Upper shaft 540/1000 r/min gears Z25/17 Z25/17
Upper shaft 540/540E r/min gears Z20/17 Z20/17
PTO shaft gears for 540/540E/1000 r/min Z59/57/52 Z59/57/52
PTO shaft foremost gearwheel for
ground speed PTO Z31 Z25
Gearwheel on the ground speed PTO shaft Z22 Z24
Note! On E---models, there is an impulse disc on the PTO shaft for measuring PTO shaft speed. On power take---off units without
ground speed PTO, there is not a ground speed PTO shaft (lowest) and a ground speed PTO gearwheel at the front end of the
PTO shaft. Instead of this gearwheel, there is fitted a spacer ring and spacer sleeve. In addition, the front bearing of the PTO shaft
is a ball bearing.
Settings
Clearance of the ground speed PTO shaft bearings 0,025---0,075 mm..........
Clearance of the PTO clutch shaft bearings 0,025---0,075 mm.................
Clearance between PTO shaft rear bearing and PTO shaft oil seal is adjusted to zero with shims.
Tightening torques
Frame joint between gearbox---PTO housing:
--- u p p e r stu d nu t s ( 8 p c s) 27 0 --- 330 N m................................
--- l o w e r s tu d n u t s (6 p c s ) 72 --- 88 N m................................
Front cover of the PTO unit 72---88 Nm...............................
Shaft nut on the ground speed PTO shaft 260---280 Nm...................
Locking plate for the clutch shaft adjusting nut 21---25 Nm..............
Locking flange at the front end of the PTO shaft (earlier version) 190---210 Nm
LockingboltatthefrontendofthePTOshaft(laterversion) 225Nm...
Locking fluids and sealing compounds used
Sealing compound Hylosil RTV Grade 102 black between gearbox---PTO unit
Sealing compound Loctite 542 on PTO speed sensor threads (only 6600E and 8100E---models).
Activator Loctite747 + locking fluid Loctite 270 onto the locking flange at the front end of the PTO shaft (earlier version).
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