Lifting Chains Inspection - JLG TOUCAN 8E Service And Maintenance Manual

SECTION 5 - TURNTABLE AND VERTICAL MAST
chart below. A too low viscosity will facilitate draining
of the lubricant by gravity. A too high viscosity will
prevent lubricant from reaching the friction surfaces
of the chain.
Operating Temperature °C (°F)
-15°C to 0°C (5°F to 32°F)
0°C to 50°C (32°F to 122°F)
1. Using the ground control station, fully raise the
mast.
2. Lubricate the chains with a specified lubricant using
a paint brush or by spraying (if using a paint brush,
lubricant must be applied longitudinally to facilitate
penetration of lubricant between friction surfaces,
then transversely between the plates to enable lubri-
cant to reach the joint).
NOTE: If the chains are too clogged for the lubrication to be
correctly performed:
• Remove them from the mast.
• Thoroughly clean them with paraffin oil.
• Dry with compressed air while moving the chain.
• IMMEDIATELY dip in specified lubricant and move the
chain.
• Reinstall chain and cycle the mast several times.

Lifting Chains Inspection

Inspect thoroughly each chain over its entire length:
• Chains, anchors, clevis pins and splits pins should not
be corroded.
• Plates should not be cracked:
Figure 5-31. Cracked Plate
• The plate clevis pins should not present excessive
play.
• Pins should not have turned in their housing (1).
Figure 5-32. Turned Pin
5-14
ISO Viscosity grades VG
15 to 32 mm²/s (cSt)
46 to 150 mm²/s (cSt)
– JLG Lift –
• Plates should not be worn above 5% of their total
height.
Figure 5-33. Worn Plate
Pitch 5/8" (15.875 mm)
H min.
11.5 mm (0.453 in.)
• Chains should not have stretched above the values
indicated in the chart below.
Pitch 5/8" (15.875 mm)
L max. 163.5 mm (6.4 in.)
All chain appearing faulty or worn must be replaced
including chain anchors. Condition of the pulleys, pulley
bushings and telescopic mast alignment must be
inspected.
3/4" (19.05 mm)
13.6 mm (0.535 in.)
3/4" (19.05 mm)
196 mm (7.7 in.)
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