7 - 2
Checking/Adjusting the Track Tension
1
Prepare the Machine
Position the machine on level ground. Run it
backwards and forwards several times. Stop after
running it forwards.
Carry out steps 1 to 3 of
Cleaning the Tracks
. Block
up the undercarriage frame. Finish track rotation by
running the track forwards. Stop the engine and remove
the starter key.
!
!
WARNING
NEVER position yourself or any part of your body under a
raised machine which is not properly supported. If the
machine moves unexpectedly you could become
trapped and suffer serious injury or be killed.
INT-3-3-7
2
Check the Tension
Measure gap
A
in line with the third roller from the front
and between the lower surface of the track frame and
the upper surface of the shoe. The dimension should be
275-295 mm for hard ground conditons. For operation
on soft sand or sticky mud it should be 320-340mm.
3
Adjust the Track Tension
Adjustment is made by either injecting or releasing
grease from the check valve
B
. Inject grease to reduce
the gap (increase the tension) or open to release grease
and increase the gap.
!
WARNING
When opening the check valve always stand to one side
and loosen a little at a time until grease starts to come
out. If you over-loosen too much grease could spurt out
or the valve cover fly out and cause serious injury.
8-3-4-5
!
WARNING
Under no circumstances must the check valve be
dismantled or any attempt made to remove the grease
nipple from the check valve
8-3-4-9
If a gap
C
exists between the idler wheel shaft and
the track frame, you may use pressure to apply the
grease.If there is no gap
C
after the application of
grease, then the necessary repairs must be carried out.
Note:
Excessive tension can cause the track rail to wear the
drive rollers and sprocket, insufficient tension can cause
wear to the drive sprocket and track rail.
4
Lower the Track
Remove the blocks from beneath the undercarriage
and lower the track to the ground using the boom and
dipper controls.
5
Repeat for the Opposite Track
Slew the boom round to the other side and repeat steps
1
to
4
above.
Section 3
Routine Maintenance
9803/6410
Section 3
7 - 2
Issue 1
Tracks and Running Gear (continued)
Содержание JS130
Страница 39: ...3 3 Section 3 Routine Maintenance 9803 6410 Section 3 3 3 Issue 1 Greasing continued Excavator End...
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Страница 119: ...3 1 Section C Electrics 9803 6410 Section C 3 1 Issue 1 Layout Operator s Cab...
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Страница 159: ...5 20 Section C Electrics 9803 6410 Section C 5 20 Issue 1 Pump Control Swing brake Swing lock continued Flow Chart...
Страница 160: ...5 21 Section C Electrics 9803 6410 Section C 5 21 Issue 1 Pump Control Lever Lock Circuit Diagram Time Chart...
Страница 161: ...5 22 Section C Electrics 9803 6410 Section C 5 22 Issue 1 Pump Control Lever Lock continued Flow Chart...
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Страница 210: ...3 4 Section E Hydraulics 9803 6410 Section E 3 4 Issue 2 Schematics Shuttle Block...
Страница 211: ...Section E Section E Hydraulics 9803 6410 Issue 2 3 5 3 5 Schematics Pilot Control Line Hose Connection Diagram JS03540...
Страница 212: ...Section E Section E Hydraulics 9803 6410 Issue 1 3 6 3 6 Schematics Pilot Control Line Hose Connection Diagram JS03540...
Страница 234: ...14 1 Section E Hydraulics 9803 6410 Section E 14 1 Issue 1 JS00010 Hydraulic Pump Regulator Dismantling and Assembly...
Страница 278: ...32 2 Hydraulic Circuit Diagram Section E Hydraulics 9803 6410 Section E 32 2 Issue 1 Control Valve JS01700...
Страница 279: ...33 1 Neutral Circuit Section E Hydraulics 9803 6410 Section E 33 1 Issue 1 Control Valve JS01610...
Страница 284: ...33 6 Boom Raise BM Operation Section E Hydraulics 9803 6410 Section E 33 6 Issue 1 Control Valve L...
Страница 287: ...33 9 Slew Operation SW Priority Circuit Section E Hydraulics 9803 6410 Section E 33 9 Issue 1 Control Valve JS01770...
Страница 293: ...Hydraulics 9803 6410 Issue 1 34 3 34 3 Section E Section E Control Valve JS01820 Dismantling and Assembly cont d...
Страница 532: ...Contents Page No Technical Data 1 1 i Engine 9803 6410 i Issue 1 Section K Section K...