DURKOPP ADLER 827 Service Instructions

Table of Contents
Service Instructions 827/827-M - 01.0 - 05/2019 1
1 About these instructions ........................................................... 5
1.1 For whom are these instructions intended?.................................. 5
1.2 Representation conventions – symbols and characters ............... 5
1.3 Other documents .......................................................................... 7
1.4 Liability.......................................................................................... 7
2 Safety........................................................................................... 9
2.1 Basic safety instructions ............................................................... 9
2.2 Signal words and symbols used in warnings.............................. 10
3 Working basis ........................................................................... 13
3.1 Order of the adjustments ............................................................ 13
3.2 Laying the cables........................................................................ 13
3.3 Removing the covers.................................................................. 14
3.3.1 Access to the underside of the machine..................................... 14
3.3.2 Disassembling and assembling the arm cover ........................... 15
3.3.3 Disassembling and assembling the head cover ......................... 16
3.3.4 Disassembling and assembling the valve cover......................... 17
3.3.5 Opening and closing the throat plate slide ................................. 18
3.3.6 Disassembling and assembling the throat plate ......................... 19
3.3.7 Disassembling and assembling the feed dog ............................. 20
3.4 Flats on shafts ............................................................................ 21
3.5 Locking the machine in place ..................................................... 22
3.6 Adjusting the handwheel into position ........................................ 23
4 Adjusting the handwheel scale ............................................... 25
5 Positioning the arm shaft......................................................... 26
6 Positioning the toothed belt wheels ....................................... 27
6.1 Positioning the upper toothed belt wheel.................................... 27
6.2 Positioning the lower toothed belt wheel .................................... 28
7 Stitch length adjusting wheel.................................................. 30
7.1 Adjusting the stitch length adjusting wheel................................. 30
7.2 Adjusting the stitch length limit ................................................... 32
7.3 Adjusting the eccentric for the forward and backward stitches... 33
8 Needle bar linkage.................................................................... 35
8.1 Aligning the needle bar linkage sideways................................... 35
8.2 Aligning the needle bar linkage in the sewing direction.............. 37
9 Adjusting the feed dog............................................................. 38
9.1 Adjusting the feed dog position .................................................. 38
9.1.1 Moving the feed dog on the feed dog carrier.............................. 38
9.1.2 Moving the feed dog carrier........................................................ 39
9.2 Adjusting the feed dog movement .............................................. 40
9.2.1 Adjusting the feed movement ..................................................... 40
9.2.2 Adjusting the feed dog height at top dead center ....................... 41
9.2.3 Adjusting the stroke movement .................................................. 42
9.2.4 Adjusting the compensating weight ............................................ 43

DURKOPP ADLER 827 Specifications

General

Brand	DURKOPP ADLER
Model	827
Category	Sewing Machine
Language	English