Atlas Copco LT2 User Manual

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

Atlas Copco LT2 Specifications

General

Brand	Atlas Copco
Model	LT2
Category	Air Compressor
Language	English