Valtra 6850 - Page 682

633
Model Code Page
41. Clutch
1. 4. 1997
6000--8750
410 1
15. 5. 1996
Contents
General (Op. no. 410) :
Technical data 1...................................................................
Special tools 2....................................................................
Clutch, description 3...............................................................
Fluid coupling (Hi---Trol) 6..........................................................
Release mechanism of cable type, 659478--- 8.........................................
Hydraulic type release mechanism, 668103--- 9........................................
HiShift 11.........................................................................
Repair instructions (Op. no. 411)
1. Changing disc/release bearing:
A. Splitting tractor at clutch 1........................................................
B. Changing clutch/disc 2..........................................................
C. Changing release bearing 2......................................................
D. Assembling tractor at clutch 3.....................................................
2. Checks and adjustments:
A. Adjusting clutch pedal free travel up to ser. no. 659477 4.............................
B. Checking the clutch disc and clutch assembly 4.....................................
3. Hydraulic coupling (Hi ---Trol)
A. Checking function of hydraulic coupling 7..........................................
B. Sta ll --- test 7....................................................................
Transfluid---coupling, repair instruction 8..............................................
4. Adjusting and repair instruction for cable type release mechanism, 659478--- 10......
5. Adjusting and repair instruction for hydraulic type release mechanism, 668103 --- 11...
6. HiShift 12.......................................................................
Technical data
Single dry---disc clutch of cup spring type, mechanically operated. The clutch assembly is the same on all 6000---8400 tractors.
On the tractors with Hi---Trol, the clutch disc has no vibration damping springs.
Manufacturer F&S....................................................................
Clutch disc diameter 330 mm.............................................................
Clutch disc diameter, latest 8200---8400 (transmission 460) and 8050---8750 350 mm...............
Linings on 6000---8100 organic (asbestos---free)............................................................
Linings on earlier 8400 ceramic (asbestos---free)............................................................
Linings on latest 8200---8400 (transmission 460) and 8050---8750 (ø 350) organic (asbestos---free).................
Releasing force max. 2950 N..................................................................
Clutch pressure against flywheel about 11200 N...................................................
Tightening torques
Clu tch --- f ly w h e e l 23 Nm.................................................................
Pump shaft drive flange---flywheel 46 Nm..................................................
Release bearing tube guide sleeve---fuel tank, ---659477 46 Nm...............................
Engine---fuel tank 80 Nm................................................................
Flange joint, propeller shaft 35 Nm........................................................
Adjustments
Clutch pedal free travel, ---659477 20---25 mm..................................................
Clutch pedal free travel with cable type release mechanism, 659478--- 15---20 mm...................
Clutch lever travel (at wing nut), ---659477 10---15 mm...........................................
Distance, wing nut---adjuster stop (new disc), ---659477 50---55 mm................................
Distance between cable nut and cab front wall with pedal travel 15---20 mm, 659478--- 3 mm......
With cable type release mechanism, the release lever bolt is tightened first fully home
and then it is uns crewed:
--- 3/4 a turn, ---662263
--- 1/4 a turn, 662264---.