Terex GS90D-4695 Service And Repair Manual

Also see for Genie GS-3390: Maintenance manual Maintenance manual Operator's manual Service and repair manual Service and repair manual

Service and Repair Manual December 2023Ground Controls76 GS™-3390 • GS™-4390 • GS™-5390 Part No. 1325652GT47 Lower the machine onto the blocks.48 Raise the platform approximately 16 feet /5 m.Result: The platform stops raising and the tiltalarm will sound at 180 beeps per minute.Result: The platform does not stop raising andthe tilt alarm does not sound. The level sensormust be replaced. Repeat this procedurebeginning with step 9.Note: For reference only, the output of the levelsensor should be approximately 1.5V DC. Toconfirm, connect the positive lead of a multimeterto the blue wire at the level sensor, and thenegative lead to the black wire.49 Lower the platform to the stowed position.50 Raise the machine slightly.51 Remove the blocks from under both wheels.52 Lower the machine and remove the jack.53 Center a lifting jack under the drive chassis atthe non-steer end of the machine.54 Raise the machine approximately 6 inches /15 cm.55 Models with RT tires: Place a 4.36 x 10 x10 inch / 11.07 x 25 x 25 cm thick steel blockunder both wheels at the steer end of themachineModels with flotation tires: Place a 4.58 x10 x 10 inch / 11.63 x 25 x 25 cm thick steelblock under both wheels at the steer end ofthe machine.56 Lower the machine onto the blocks.57 Raise the platform approximately 16 feet /5 m.Result: The platform stops raising and the tiltalarm will sound at 180 beeps per minute.Result: The platform does not stop raising andthe tilt alarm does not sound. The level sensormust be replaced. Repeat this procedurebeginning with step 9.Note: For reference only, the output of the levelsensor should be approximately 3.4V DC. Toconfirm, connect the positive lead of a multimeterto the blue wire at the level sensor, and thenegative lead to the black wire.58 Lower the platform to the stowed position.59 Raise the machine slightly.60 Remove the blocks from under both wheels.61 Lower the machine and remove the jack.62 Turn the key switch to the off position.