If, when turning on the grinder, circular sparking is observed, this is an indication that the anchor lamellas have burnt out and an urgent replacement is required. You will learn how to repair a tool with your own hands from our step-by-step master class using the example of a Makita 9069 angle grinder.
Unscrew the 4 screws securing the gearbox to the housing.
We remove the gearbox along with the anchor and dust ring. We put the body and the ring aside – no work is done with them.
With a hexagonal L-shaped wrench, unscrew the 4 bolts of the gearbox cover and remove it.
The small gear on the anchor is fixed with a retaining ring (black ring). Remove the retaining ring with a puller.
Carefully remove the gasket.
Unscrew the front and rear anchor fixing bolts.
We remove the anchor with a bearing and a small gear.
Remove the gear and bearing.
Remove the anchor fixing disk and wipe it from dust and grease with a rag.
We take a new anchor and install a fixing disk on it.
We put and upset the bearing.
Install the small gear and fix it with a retaining ring.
We insert the anchor into the gearbox housing.
We combine the holes in the gearbox and on the anchor fixing disk and tighten the front and rear anchor fixing bolts.
We put in place the gasket and install the gear cover.
We tighten the gearbox cover bolts.
Wipe dust from the LBM case with a rag.
Installing the dust ring.
We insert the gearbox with an anchor into the LBM body.
We fix the gearbox with 4 screws.
Install the brushes and fix them with lids.
The anchor is changed, the instrument is ready for use.