Disassembling the gear unit

For repairs or replacing, it may be necessary to disassemble the gear unit.

Removing the chain box

	Bolt

		Chain box

Release the SL safety clip(s) (1x or 2x) from the bolt.

Hold the chain box firmly and pull out the bolt(s) (1x or 2x).

Remove the chain box.

Opening the chain hoist


Bayonet nut	Motor cover

Release the bayonet nuts.

Detach the connection cable and control cable.

Unscrew the motor cover from the housing.

● The fillister-head screws are secured by O-rings and thus do not fall out of the motor cover.

Detach the couplings of the hoist motor and brake from the control in the motor cover.

Only with an electronic hoist limit switch

This work step is only applicable if the hoist limit switch PCB is visible in the housing:

Housing

Hoist limit switch PCB

Removing the hoist limit switch

	Hoist limit switch PCB

	Fillister-head screws with ribs M5x10

Pull the connector off the hoist limit switch PCB.

Unscrew the fillister-head screws with ribs M5x10 (3x).

Take the hoist limit switch PCB out of the chain hoist.

The magnet carrier of the hoist limit switch is firmly screwed to the output shaft of the gear unit. It must be unscrewed as otherwise it would damage components when the gear unit is pulled off.


Magnet carrier

Unscrew the magnet carrier.

Taking out the chain guide

Only for GM2

Locking screw

Fillister-head screws

Unscrew the fillister-head screws (3x).

Leave the locking screw tightened.

It later ensures that the gear unit cannot not fall down.

Only for GM4

Locking screw

Fillister-head screws

Unscrew the fillister-head screws (3x).

Leave the locking screw tightened.

It later ensures that the gear unit cannot not fall down.

Only for GM6

	Locking screw

Fillister-head screws

Unscrew the fillister-head screws (3x).

Leave the locking screw tightened.

It later ensures that the gear unit cannot not fall down.

Only for GM8

Tip:

The chain guide, chain and gear unit of the chain hoist are very heavy. Therefore unhook the chain hoist and remove the chain guide lying flat.

Fillister-head screws

	Locking screw

Unscrew the fillister-head screws (3x).

Leave the locking screw tightened.

It later ensures that the gear unit cannot not fall down.

Warnung Vorsicht

Caution - danger of injury!

When pulling off the gear unit, the chain guide can fall down and injure people. Hold the chain guide firmly or otherwise secure it!

Gear unit	Housing

Chain guide

Hold the chain guide firmly.

Pull the gear unit from the housing.

The locking screw secures the gear unit so that it need not be completely removed.

The chain guide is now released.

● Pull the entire chain guide downward out of the housing.

Removing the gear unit


Locking screw

Unscrew the locking screw.

● The gear unit is now released.

Remove the gear unit.