Lull 944E-42 Service Manual - Manual (Page 497)

8.245 Model 644E-42/944E-42 Rev. 6/04
Hydraulic System
5. Place an Accident Prevention Tag on both the
ignition key switch and the steering wheel, stating
that the vehicle should not be operated. Refer to
Section 1.5, “Accident Prevention Tag Usage.”
6. Unlock, unlatch and open the engine cover. Allow
the hydraulic fluid to cool.
7. Remove all dirt and grease from the swing carriage
cylinders (2) and their hydraulic lines (3 and 4).
8. Label or otherwise mark the hydraulic lines (3 and 4).
9. Disconnect and cap all hoses and fittings, etc.
10. Use a sling and hoist or other suitable lifting device
to support the cylinders (5). Remove the bolt (6) and
nut (7) holding the center mounting pin (8) to the
pivot mount (9). Remove the pin.
11. Remove snap rings (10) and cylinder base end pins
(11) from the mounting plates (12) on carriage.
12. Identify and mark the location of the 1-1/2" I.D. shims
(13) at the base end of the cylinder.
13. Remove the cylinders (5) from the pivot mount (9)
and the mounting plates (12) using the strap sling
and hoist or other suitable lifting equipment. While
removing the cylinder(s), identify the locations of the
2" I.D. shims (14) at the rod end(s) of the cylinder(s).
DO NOT lose the bearing(s) (15), which may be
loose, in the cylinder rod end(s).
14. Wipe up any hydraulic fluid spillage in, on, near and
around the vehicle. Disconnect and cap all hoses
and fittings, etc.
WARNING:
Hot hydraulic fluid can
cause severe burns. Wait for hydraulic fluid to
cool before servicing any hydraulic component.
WARNING:
Escaping hydraulic fluid
under pressure can penetrate the skin, causing
death or serious injury. Relieve hydraulic
pressure before servicing any hydraulic
component.
E
X
X
R
MT1960
2
3
4
2
8
6
MT1970
5
7
9
10
11 12
13
14
15
15
14
10
5
14