SkyTrak 6036 Service Manual - Manual (Page 70)

Boom
3-28 6036, 6042, 8042, 10042, 10054
29. At the front of the first boom section, assemble the
hose assemblies and tube assemblies to the
mounting plate (6).
Note: Where the hose assemblies come out of the outer
boom, lubricate the radius in the first boom section with
soap and water to allow proper tensioning of hoses.
30. Install the quick attach and Attachment Tilt cylinder
to the front of the boom. Refer to Section 3.8.2,
“Quick Attach Installation.”
31. Uncap and connect the previously labeled hoses to
the Attachment Tilt cylinder.
32. Properly connect the battery.
33. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
34. Start the engine and operate all boom functions
several times. Check the chain tension again and
adjust as necessary. Check for leaks, and check the
hydraulic fluid level in the tank; add fluid if required.
35. Clean up all debris, hydraulic fluid, etc., in, on, near
and around the machine.
36. Install the rear cover to the boom.
37. Close and secure the rear door.
3.7 BOOM EXTEND AND RETRACT
CHAINS
3.7.1 Boom Chain Inspection
Under normal operating conditions the boom extend
chains will need to be inspected every
250 hours of
operation. The retract chains need to be exposed and
inspected every 1000 hours of operation. Environmental
conditions and dynamic impulse/shock loads can
drastically affect normal operating conditions and require
more frequent inspection intervals.
Environments in which material handling machines
operate can vary widely from outdoor moisture to
temperature to mildly corrosive or highly corrosive
industrial atmospheres, in addition to abrasive
exposures such as sand and grit. Some effects can be
as follows:
• Moisture - Corrosive rusting reduces chain
strength by pitting and cracking.
• Temperature - Low temperature reduces chain
strength by embrittlement. Going in and out of
cold storage results in moisture from
condensation.
• Chemical Solutions or Vapors - Corrosive attack
on the chain components and/or the mechanical
connections between the chain components.
Cracking can be (and often is) microscopic.
Going from microscopic cracking to complete
failure can be either abrupt or may require an
extended period of time.
• Abrasives - Accelerated wearing and scoring of
the articulating members of the chain (pins an d
plates), with a corresponding reduction in chain
strength. Due to the inaccessibility of the bearing
surfaces (pin surfaces and plate apertures),
wear and scoring are not readily noticeable to
the naked eye.
MH1451
6
WARNING
Worn pins, stretched or cracked links or corrosive
environments can cause chain failure. A chain failure
could result in uncontrolled boom movement, loss of
load or machine instability.