Replacement Of Valve Discs (Figs. 5.1 And 5.2) - Atlas Copco LE2 Instruction Book

Instruction book

5.2.1 Replacement of valve discs (Figs. 5.1 and 5.2)

LE2, -3, -5, -7
LE10 50 Hz
LF2, -3, -5
LP cylinder for
LE10 60 Hz
LE15, -20
LF7, -10
LT15/60, -15, -20
LT15-30, LT20-30
LT2, -3, -5, -7, -10
See Figs. 5.1/5.2
X
X
X
X
X
X
X
X
X
X
X
X
X
2920 1585 00
HP cylinder HP cylinder
for for
LF7 LE10 60 Hz
LT15/60, -15 LE15, -20
LT15-30 LF10
LT2, -3, -5, -7 LT20
LT10 LT20-30
Figs.
See 5.1/5.2 See Fig. 5.3
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
X
X
X X
- 55 -
Operation sequence
Remove the fan guard, unscrew the cap and remove
the cover (1-Fig. 1.1), air filter and cover of the air
inlet silencer.
Disconnect cylinder head cover (12) from the inlet
and outlet pipe flanges. Remove cover (12).
Disconnect head (13) from the inlet and outlet pipe
flanges. Remove cylinder head cover (12). Remove
head (13).
Remove spring (4), outlet valve guard (5) and outlet
valve disc (6).
Lift off valve seat (7) and remove inlet valve disc (8).
Do not remove guide pins (9).
Remove and discard all O-rings/gaskets and joints.
If necessary, remove the carbon deposits from the
inlet valve guard at the cylinder top. Take care that
no dirt drops into the cylinder.
Clean and inspect all parts.
Fit a new joint (10). Do not stretch the cord while
inserting it in its groove; the ends should meet.
Put a new inlet valve disc (8) into place and install
valve seat (7).
Fit a new O-ring (3) and joint (2).
Install a new outlet valve disc (6), guard (5) and
spring (4).
Install cylinder head cover (12).
rings/gaskets for the pipe flanges. Fit the flange and
cylinder head bolts and tighten them alternately.
Reinstall head (13). Fit a new joint (14).
cylinder head cover (12). Fit new O-rings/gaskets for
the pipe flanges. Fit the flange and cylinder head
bolts and tighten them alternately.
Fit a new joint (16) and install head (13) and cap (15).
Fit a new joint (14). Install cylinder head cover (12).
Fit new O-rings/gaskets for the pipe flanges. Fit the
flange and cylinder head bolts and tighten them
alternately.
Reinstall the fan guard, cover of the air inlet silencer,
air filter, cover (1-Fig. 1.1) and cap.
Fit new O-
Install