303Hb Flashcards
Track tension and recoil mechanisms must be inspected, maintained and serviced
only after you have read the service information relating to these systems.
true
Track chain tension that is too tight can cause:
accelerated wear of the moving undercarriage components.
You are inspecting an undercarriage system while the machine is in the field. List
some of the conditions/problems that might hamper your inspection.
a) poor weather conditions,
b) inadequate equipment shelter
c) lack of heat, light or other amenities at the inspection site,
d) location of the operation site (drive-in versus fly-in)
e) your level of expertise
Explain how pin and bushing wear is measured.
A tape measure is used to measure the distance between the centre of one track pin to
the centre of another track pin, perhaps four or five links apart. The track is stretched
tight at this time. The measurement is compared to specifications.
Multi-purpose wear gauges are suitable for measuring:
any of the above items are correct.
The wear on the flanges of the rollers would be even if a machine is constantly
working on a hillside and moving in one direction only
false;
When you work on an undercarriage system you often need
a) a co-worker.
b) a service manual.
c) hydraulic jack(s), hoist(s) and/or lift truck(s).
d) sturdy support stands.
e) all of the above responses are correct.
all of the above responses are correct.
Lifting wedges are used to raise the machine when the machine is immobile.
false;
Explain the most important safety precaution you must take if you have to raise a machine to access undercarriage components.
Use support stands of sufficient capacity to hold the weight of the machine and all
attachments, including the undercarriages.
Explain what steps you would take before you installed new or exchange components
on a machine.
. a) Remove the old component and clean the mounting surface.
b) Inspect the mounting surface and bolt holes
c) Clean all protective paint and other material off the mounting surface of the new
component
f) Test fit the components together
When very high torque specifications are indicated. You must use a very large torque
wrench.
false;
Track pins and bushings can be turned many times. These components only need to
be replaced if they cannot be built up any more due to lack of material on the original
casting
false;
. Many undercarriage components can be remanufactured. What determines if a
particular component can be rebuilt or not?
Components can be remanufactured as long as they are removed for rebuild while
they are still within the service limits specified in the service manual for that
machine.
Undercarriage components must withstand extreme shock loads proper torque is crucial you should always torque to?
Manufacturers specification and in proper sequence
Turning pins and bushings is important for?
Maximum service life of components
