JLG TF6-42 Service Manual - Manuale (Pagina 584)

3-FUNCTION VERSION ONLY
Connet the service and negative brakes to an external pump;
introduce pressure up to a value of 20 ± 25 Nm.
NOTE. Check that pressure is kept stable for at least 5 minutes and
make sure there are no leaks.
3-FUNCTION VERSION ONLY
Screw dowels (29) until pins (30) position themselves against the
piston (33), then unscrew dowels by one turn to obtain a 1.5 mm
stroke.
Lock dowels (29) into position with the nuts (28) tightened at 15
Nm.
Release pressure.
Check negative brake release by introducing a pressure of 16v35
bar and by manually rotating the flange (5).
Release pressure.
Fit the movement sensor (1) and screw it up to the limit stop.
Unscrew sensor by 3/4 turn and lock into position with nut. Locking
torque: MAX 30 Nm.
CAUTION! Do not exceed the specified torque setting.
CAUTION! To release the negative brake during an emergency,
(lack of pressure due to vehicle breakdown), loosen nuts (22) and
screw dowels (21) in an alternate and gradual manner until you
notice some preloading; continue by giving another 1.5 turns.
When the emergency is over, loosen the dowels in an alternate
manner until a 17 mm projection is obtained; lock into position with
the nuts (22) tightened to15 Nm.
bar bar
bar
GB GB
GB GB
GB GB
a b
c d
f e
182
HOW TO ASSEMBLE THE 4" INCOMING BRAKE (2 AND 3 FUNCTION VERSIONS) - ASSEMBLAGGIO FRENO IN ENTRATA DA 4" (A 2 E 3
FUNZIONI) - BREMSE AM EINGANG ZU 4" (MIT 2 UND 3 FUNKTIONEN) MONTIEREN - ASEMBLAJE FRENO EN ENTRADA DE 4" (A 2 Y 3
FUNCIONES) - MONTAJE DEL FREIN EN ENTREE 4" (A 2 ET 3 FONCTIONS)
F1240944 F1240945
29 30
33 30
28 29
F1240801
5
F1240763
1
0,8
÷ 1,2mm
F1240802
22 21
D1240098
17 mm