Maintenance Manual September 2016Annual Maintenance Procedures40 Genie Telehandlers Part No. 12728586 Place an adjustable wrench across the flatpart of the chain, just ahead of the chainanchor. Tighten the wrench onto the chain.7 Using a 1 7/16 inch wrench, adjust the nut asrequired to tighten or loosen the chain. Repeatthis procedure beginning with step 4 until thegap is between 0.25 to 0.5 inch / 6.35 to12.7 mm.Note: If the adjusting bolt runs out of threads beforethe chain tension is correct, the chain has stretchedtoo far and the chain must be replaced.1 nut2 washer3 spacer4 chain anchor8 Fully retract the boom.9 Measure the gap between the washer and thespacer. The gap should be between 0.125 to0.25 inch / 3.2 mm to 6.35 mm.A-4 Adj ust the Boom Sequencing C hai ns - GTH-1256 and GTH- 1544A-4Adjust the Boom SequencingChains - GTH-1256 and GTH-1544Genie specifications require that this procedure beperformed annually.Extend chains (boom bottom side)1 Raise the boom to horizontal position.2 Fully extend the boom.3 Retract it about 3.9 inches / 100 mm.4 Tighten the chain up to a maximum tensionvalue of 37 ft-lbs / 50 Nm.5 Check that all chains have been equallytensioned. If not, repeat the operationdescribed above.6 Lock the chain tensioners by means of acounternut and locknut.Retract chains (boom upper side)1 Fully retract the boom.2 Extend the boom by 11.8 inches / 300 mm.3 Loosen the locker nut.4 Tighten the tensioning nut to 37 ft-lbs / 50 Nm.5 Tighten the locker nut.6 Check that all chains have been equallytensioned. If not, repeat the operationdescribed above.Note: If during chain tensioning, problems aredetected, please Genie Product Support.