659
Model Code Page
41. Clutch
6000--8750 411 11
15. 4. 1995
1. 1. 1995
5. Hydraulic clutch release mecha-
nism, 668103---.
A. Bleeding the clutch circuit
Note! The bleeding hose/nipple is placed on the LH side of
the tractor frame.
This release mechansim does not normally require any
adjustments. The clutch pedal free travel cannot be felt, since
the release bearing is in the continuous contact with the
clutch. If the clutch does not release, the system must be bled.
Note! Check that the reservoiris full of brake fluid before blee-
ding. Pump with the clutc h pedal a few times, so that the sys-
tem is under pressure.
--- Depress the clutch pedal and at the same time open the
bleeding nipple.
---Whenthepedalisdown,closethenippleandallowthe
pedal to rise up.
--- Continue in this way until no air bubbles come out of the
nipple
--- Check again liquid level in the reservoir and top up if
necessary
Note! Do not allow the liquid to contact the tr actor frame,
since the brake fluid can damage the paint.
B. Adjusting the pedal free travel
Thefreetravelcannotbefelt,sincethereleasebearingtou-
ches the clutch release fingers all the time. Normally thepedal
does not need any adjustment.
Adjust the distance between the master cylinder piston and
the pedal push rod to 0,5 ---2,0 mm, when the pedal is in the
upper position.
This clearance can be adjusted by slackening the clevis lock
nut and by rotating the clevis.
C. Master cylinder
A
The master cylinder is attached with two bolts onto the cab
front wall.
A seal kit is available for the cylinder. The seals, piston and the
spring can be removed from the cylinder by removing the cir-
clip A and the intermediate ring behind the circlip. Lubricate
new seals with brake fluid. The seals must not be lubricat ed
with oil, because oil damages them.
D. Slave cylinder/release bearing
Note! Thetractorframeissplitattheclutchasbeforeaccor-
ding to instruction A on page 411/1. Assemble the tractor
frame according to instr. D on page 411/3.
1
23
4
5
1. The slave cylinder unit is attached with three bolts onto the
tractor frame. The pressure hose and the bleeding hose have
different threads.
2. The release bearing can be removed by releasing circlip
1. Before removing the bearing, the locking sleeve 2 claws
should be released from the flange.
3. The plastic covering 3 cannot be removed separately. The
guide sleeve 5 loosens, when you remove the circ lip 4.
Important! The slave cylinder seals must not be lubricated
with mineral oil. The seals are lubricated with brake fluid.
Note! When the clutch disc linings are worn, the slave cylinder
shrinks correspondingly and the stroke of the cylinder
remains the same (about 10 mm).
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