Terex TS14G, Maintenance Manual

Page: 128 / 376

8
SM 1781 4-99
Rear Axle - No SPIN® Element
Section 160-0080
easily performed by following the steps illustrated
below:
WARNING
To prevent personal injury and property
damage, make sure both wheels are off
ground. Both wheels are driving wheels even
if one is off ground.
1. Raise the axle to be tested so that both tyres are
free to rotate. Block up the axle securely.
2. With the aid of an assistant, rotate both wheels
forward as far as possible (they should stop after
only a 25 - 75 mm (1 - 3 inches) movement). If
differential gearing and transmission gearing
resistance do not stop wheel rotation after a few
inches of movement, insert a suitable soft bar into a
driveline universal joint so that it will rest against a
chassis rail, etc., to prevent wheel rotation.
3. Hold the left wheel securely in the forward position
and rotate the right wheel in the reverse direction,
while listening for regular clicking or meshing of the
NoSPIN® unit. The clicking will be very faint - almost
inaudible. The left wheel must be held firmly forward
against the stop or the right wheel will not disengage
freely.
4. Rotate both wheels rearward as far as possible
(they should stop after only a few inches movement).
5. Hold the left wheel firmly against the stop in the
rearward position and rotate the light wheel in the
forward direction. Listen for the clicking that indicates
meshing of the NoSPIN® during wheel rotation. The
left wheel must be firmly against the stop or the right
wheel will not rotate freely.
6. Repeat Steps 2 thru 5, while holding the right
wheel and testing the left wheel for rotation in the
forward and reverse directions.
If the NoSPIN® unit is properly assembled and
installed in the differential, free rotation of each wheel
will produce very faint clicking sounds as the unit
meshes. If either wheel does not rotate or cam freely
in both directions, check for dragging brake shoes on
both service and parking brakes, and for faulty
NoSPIN® assembly and installation.
SPECIAL TOOLS
There are no special tools required for procedures
outlined in this section. Refer to Section 300-0070,
SERVICE TOOLS, for part numbers of general
service tools and adhesives required. These tools are
available from your dealer.
DIAGNOSIS CHART
CONDITION REASON REMEDY
Loss of drive to wheel Both sides gears jammed, preventing Remove differential and repair NoSPIN®
differential action element
One axle always cammed out and will Remove differential and repair NoSPIN®
not drive. The axle splined to the element
jammed side will always drive
Loud snap and severe Worn clutch teeth Replace worn NoSPIN® components
jerk under heavy torque
loads
Loss on differential Locked NoSPIN® element Disassemble and replace damaged
action or wheel components
scuffing
Continuous indexing or Unequal radii of tyres or defective Use tyres with same radii or repair
clicking sound on NoSPIN® NoSPIN®
straight forward
driving
* * * *
Courtesy of Machine.Market