Maeda CC1908S-1 - Adjustment

M A E D A Crawler Crane 6.18 IRREGULAR MAINTENANCE
5/2020 CC1908S-1 6-87
CRAWLER TRACK
TENSION
INSPECTION/ADJUSTMENT
The pins and bushings around the undercarriage
of the machine will wear differently depending on
the working conditions and soil quality. Check the
tension of the crawler tracks at any time to
maintain the prescribed tension.
Inspect and adjust on firm, level ground.
INSPECTION
1. Keep the engine at low idle to allow the
machine to move forward a distance equal to
the length of the crawler tracks in contact with
the ground, and slowly bring it to a stop.
2. Place a square bar (3) that can reach
between the idler (1) and upper rolling wheel
(2) on the crawler track.
3. Measure the maximum sagging dimension
between the upper plane of the crawler track
and the bottom face of the square bar.
Reference value for sagging dimension (a):
10 mm to 30 mm is the normal range.
ADJUSTMENT
If inspection reveals that the tension differs from
the standard value, adjust it as follows:
[1] Increasing tension
• Prepare a grease gun.
1. Using the grease gun, inject grease through
the grease plug (1) opening.
2. To ensure that the correct tension is applied,
keep the engine at low idle to move forward a
distance equal to the length of the crawler
tracks in contact with the ground, and then
slowly stop.
3. Check the tension of the crawler tracks again.
If the tension is not correct, readjust.
IMPORTANT
Until dimension (S) reaches 0 mm, grease can
be injected. However, if the tension is still
insufficient, pins and bushings will be subject
to significant wear.
As reversing or replacement of pins and
bushings is required, contact us or our sales
service agency for repairs.