BA 35203_04 * 3.0 * 35203_04_07_Wartung.fm 7-69
Maintenance 7
Check the ball hitch for wear
Injury hazard due to worn out or broken coupling components.
A worn coupling pin, too much play in the bearing, or a worn base ring can
lead to serious injury or death.
► Check the ball hitch once a day for wear and play.
► Apply grease to the base ring.
► Only have repair work on the ball hitch or a replacement of the ball
hitch performed by an authorized service center.
1. Check the bearing and longitudinal play A of the coupling head:
• Move the uncoupled coupling head with force in travel direction.
2. Check the height-wise play of the coupling head:
• Open the coupling.
• Move the coupling head up and down with a suitable tool
(mounting lever).
➥ Play A in the centre axis of the coupling head = max. 3 mm (0.12 in)
3. Check the coupling pin – wear:
• Measure wear by means of a slide gage on the thickest section of the
coupling pin C.
➥ Diameter C may not drop below 36.5 mm (1.44 in).
➥ Height-wise play B max. 2.5 mm (0.1 in).
4. Check bearing support – bolt play and strength:
➥ Bolt play D in the bearing support max. 2.5 mm (0.1 in)
➥ Thickness E of base ring min. 7 mm (0.28 in)
Fig. 290:
36,5 mm
2,5 mm
7 mm
2,5 mm
36,5 mm
3,0 mm
A
B
C
E
D
To Next Page
Loading...
