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Model 9600/9700 Swing-Reach ® Lift Truck
Fork Inspection
The following tools are required to perform fork inspection:
•Fork Wear Caliper (P/N 922-369)
•Tape Measure or ruler
•24 in. Framing Square
•4 ft. Level
Do the following when performing Scheduled Maintenance.
Surface Inspection
Remove the forks from the carriage. Visually inspect all fork surfaces for signs of damage, including, but not limited to:
•cracks
•excessive wear
•excessive heat
•deformation
•unauthorized modifications
Pay special attention to the heel and welds attaching mounting components. If any damage is found, remove the fork from service.
Straightness of Blade and Shank
NOTE: This measurement can be done with the forks on or removed from the carriage.
1.Measure the length of the blade and the height of the shank. See Figure4-8.
Figure 4-8.Measuring Fork Blade and Shank
Section 4.Scheduled Maintenance
Fork Inspection
2.Multiply these numbers by 0.005 for maximum allowable deviation.
• Length of blade _____ x 0.005 = ______
• Height of shank _____ x 0.005 = ______
3.Place a straight edge on the blade of the fork, 2 in. (51 mm) away from the heel of the fork. Measure any deviation and compare to the number calculated in step2 for length of blade.
4.Place a straight edge on the shank of the fork, 2 in. (51 mm) away from the heel of the fork. Measure any deviation and compare to the number calculated in step2 for height of shank.
5.If either maximum deviation is exceeded, remove the fork from service.
Fork Angle
NOTE: This measurement can be done with the forks on or removed from the carriage.
1.Place the fork caliper on the blade. Make sure that the two extruded points are touching the blade of the fork. See Figure4-9.
2.Now open and move the caliper so the two extruded points are touching the shank. See Figure4-9.
Publication: 1089040, Issued: 08 Apr 2016
Section 4.Scheduled Maintenance
Fork Inspection
3.When all four extruded points are in contact with the fork, gently remove the caliper and note the reading on the indicator line, located right above the hinge pin. See Figure4-9.
4.If the deviation is greater than 3° of the original angle, remove the fork from service.
NOTE: Most forks are manufactured with a 90° angle; therefore, a reading greater than 93° or less than 87° is unacceptable. However, there are some forks that are purposely manufactured to angles greater than or less than 90°.
Fork Tip Height
1.With truck parked on a level surface and forks on the carriage, measure the length of the blade. See Figure4-8.
•For forks 42 in. (106.7 cm) or less, max. deviation is 0.25 in. (6.3mm).
•If length of fork is >42 in. (106.7 cm), multiply length of blade by 0.03. Blade length _____in. x 0.03 = _____in. This is the maximum deviation.
2.Elevate forks approx. 4 ft. (1.2 m) off the floor.
3.Place a 4 ft. level across the tips of the forks. See Figure4-10.
4.Raise one end of the level to make it level. See Figure4-10.
5.Measure the distance from the tip of the fork. See Figure4-10.
Model 9600/9700 Swing-Reach ® Lift Truck
6.Compare this measurement to the maximum deviation.
7.If the maximum deviation number is exceeded, remove the fork from service.
Positioning Locks (if applicable)
1.With the forks on the carriage, visually inspect the positioning locks for damage.
2.Test the positioning locks to verify they work correctly.
3.If the positioning locks are damaged or do not work correctly, remove the fork from service.
Wear
Fork Blade and Shank
1.Remove the forks from the carriage.
2.Approximately half way up the shank, set the front teeth of the jaws of the caliper on the shank. Make sure the caliper is held square across the shank to get an accurate reading. The caliper is now set to measure fork blade wear. Carefully remove the caliper from the shank. See Figure4-11.
Publication: 1089040, Issued: 08 Apr 2016
