Service Instructions - Atlas Copco G2404 Instrucciones De Operación Y Seguridad

Service instructions

Service instructions
Installation
Dismantling/inspection/assembly
Instructions
Disassembling the motor unit:
) Disassemble the sanding belt according to instructions "Replacement of sanding belt"
1
item 1-5 above.
) Keep firm hold of the drive pulley (22). Use a Ø 4 mm pin entered in the radial hole in
2
the pulley. Use the cover (26) to support the pin.
) Unscrew the nut (24). Use a 13 mm socket. Pull off the pulley.
3
) Remove the complete belt mechanism by loosening the screw (31), remove the pulley
4
(22) by knocking on the rear side of the cover. Knock in two laterally opposed positions.
) Knock out the pin (19) from the rotor shaft.
5
) Unscrew the nut (12) with a hook wrench suitable for Ø 43 mm.
6
) Push out the motor unit from the housing (1).
7
) Pull off the end plate (15). Use a puller attached to the groove in the cylinder (16). Press
8
against the shaft on rotor (17).
) Lift away the cylinder (16). Note: The end of the cylinder that has the small pin (25)
9
must face the end plate (15) at the assembly.
) Remove the vanes (18) from rotor (17).
10
) Pull off the end plate (20). Use a puller attached to the groove in the cylinder (16). Press
1 1
against the shaft on rotor (17).
) Knock out the bearings (21) and (14) from the end plates. Use a mandrel Øex 34,5/ Øin
12
30,5 mm.
Assembling the motor unit:
Prior to the assembly all the parts should be checked regarding wear and damage, if
required replaced. Furthermore, not replaced parts should be thoroughly cleaned.
) Slightly grease the bearing recess in the end plate (15) and also the bearing (14). Use a
1
mandrel Øex 18,5/ Øin 12,5 mm at the assembly of the two parts.
) Slightly grease the bearing recess in the end plate (20) and assemble the sealed bearing
2
(21). ). Use a mandrel Øex 25,5/ Øin 20,5 mm at the assembly of the two parts.
) Slightly grease the bearing surface at the end of the rotor (17) and assemble the end
3
plate (20) to the rotor. Use a mandrel Øex 15,5/ Øin 10,5 mm at the assembly.Note:
Check that there is a play between end plate and rotor end of 0,01-0,02 mm after
assembly.
) Slightly lubricate the vanes (18) with oil and assemble in the rotor.
4
) Slightly lubricate internally the cylinder (16) with oil and assemble to the rotor. Note
5
the orientation of the cylinder. The end of the cylinder that has the little pin (25) must
face the end plate (15) at the assembly.
) Slightly grease the bearing surface at the end of the rotor and assemble the end plate
6
(15). Support the motor unit on a mandrel having internal diameter 8,2 mm. Use a
mandrel Øex 10/ Øin 6,5 mm to knock in the end plate. When the assembling is correctly
66
EN
© Atlas Copco Industrial Technique AB - 9836 1623 01
1/4" BSP
10 mm (3/8")
G2404
6—7 bar =
600—700 kPa