Dynapac CC 722C, Maintenance Manual

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15 CC 722/722C M722EN2
EVERY 50 HOURS OF OPERATION (WEEKLY)
Steering cylinder and steering
joint – lubrication
Do not allow anyone near the steering
joints when the engine is running. Danger
of being crushed.
Wipe the nipples clean from grease and dirt.
Lubricate the steering cylinder mounts (1) with two
strokes of the grease gun and the horizontal and vertical
bearings of the steering joint (2) with five strokes each.
If grease does not penetrate the bearings, relieve load
on the articulation with a jack and repeat the greasing.
Ensure that grease penetrates the bearings and leave a
little grease on the nipples to prevent dirt from entering.
Ensure that the breather holes (1) in the hydraulic
reservoir cover are not clogged. Clean the cover with
diesel oil and blow dry with compressed air as required.
Wear protective goggles when working
with compressed air.
1
2
Rubber elements and fastening
screws – check
Hydraulic reservoir cover
– inspecting the breather holes
Fig. 16 Drum
1. Rubber element
2. Fastening screw
Fig. 17 Lubricant nipples
1. Steering cylinder mounts
2. Steering joint bearings
Fig. 18 Reservoir cover
1. Breather hole
1
1
1
1
1
Max 76 mm (3 in)
2
Check all rubber elements (1), replace all of the ele-
ments if more than 25% of them on one side of the
drum are cracked deeper than 10–15 mm (0.4-0.6 in).
Use the blade of a knife or pointed object to assist
when checking.
Ensure that the fastening screws (2) are tightened.
With a caliper gauge, measure the length of
the rubber element including the mounting
plates. See separate workshop instructions if
the size is more than 76 mm (3 in).
WARNING
CAUTION
WARNING