Annual Maintenance Procedures; Inspect The Forks; Adjust The Boom Sequencing Chains - Gth-636 And Gth-844 - Genie GTH-636 Maintenance Manual

Maintenance Manual

Annual Maintenance Procedures

Annu al Mainten ance Pro cedur es
A-1 A-1 Ins pect the F orks

Inspect the Forks

Genie specifications require that this procedure be
performed annually. OR whenever permanent
deformation of the forks is suspected.
Maintaining the lifting forks in good condition is
essential to safe operation and good machine
performance. Failure to detect damage to the forks
could result in a hazardous operating condition.
1 Thoroughly clean the lifting forks.
2 Inspect the forks for the following:
• Surface cracks
• Straightness of the blade and shank
• Fork angle at 90 ± 3 degrees
• Relative height of fork tips shall not differ
more than 3% of blade length
Fork
48" forks
60" forks
72" forks
• Excessive wear to the forks, fork mount or
legible markings
Result: If any of the above criteria are not met,
the fork must be removed from service until it
is repaired or replaced.
1 shank
2 blade
38
A-2 Adj ust the Boom Sequencing C hai ns - GTH-636 and GTH-844 A-2
Adjust the Boom Sequencing
Chains - GTH-636 and GTH-844
Genie specifications require that this procedure be
performed annually.
1
2
3
4
3% of blade length
1.44 in
1.8 in
2.16 in
Genie Telehandlers
Raise the boom to the horizontal position.
Extend the boom fully, then retract the boom
approximately 1 inch / 25 mm.
On either side of the middle boom section,
estimate the center. Place one end of a tape
measure on the top surface of the boom
directly above the estimated center.
Select a reference point on the sequencing
chain. Measure the distance between the
chain and the top surface of the boom. Note
the measurement (1). Refer to the following
illustrations.
September 2016
Part No. 1272858