JLG 534D-10 - Manual (Page 71)

3.43 534D-9, 534D-10 & 544D
Boom
3.17 FORKS
Forks should be cleaned and inspected prior to being
attached to carriage. If the following criteria is not met,
forks must be removed from service immediately.
Daily Inspection
1. Inspect forks (4) for cracks, paying special attention
to heel (5) and mounting tubes (6).
2. Inspect forks for broken or bent tips (7) and twisted
blades (8) and shanks (9).
Yearly Inspection
1. Straightness of the upper face of blade (8) and the
front face of shank (9) should not exceed 0.5 percent
of the length of blade or height of shank.
2. Angle (10) between upper face of blade and front
face of shank should not exceed 93 degrees.
3. Thickness of blade (13) and shank (14) should not
be reduced to 90 percent of original thickness.
4. Ensure fork length (12) is adequate for intended
loads.
5. Fork markings should be legible, re-stamp if
required.
6. Compare fork tips (11) when mounted on a carriage.
Maximum difference in height of fork tips is 3 percent
of the length of the blade (13).
MH6460
6
5
9
10
8
4
7
14
13
12
11