Removing and installing air compressor V534 and pressure accumulator — VW

Removing and installing
air compressor
V534
and pressure accumulator
Special tools and workshop equipment required
Torque wrench
V.A.G 1331
Removing
Refer to general repair instructions
Chapter
.
Relieve pressure in system
Chapter
.
WARNING
Always wear eye protection, protective gloves and ear protectors when working on compressed air system.
The air system works with approx. 10 bar.
Relieve air pressure before working on system
Chapter
.
Note
All cable ties which were opened or cut during removal must be renewed at the same points when component is installed.
Caution
Please observe the following points during all installation work, in particular in the engine compartment, due to the space limitations:
Route all kinds of lines (e.g. for fuel, hydraulics, activated charcoal system, coolant and refrigerant, brake fluid, vacuum) and electrical cables so that the original line routing is re-established.
To avoid damaging lines, make sure there is sufficient clearance to all moving or hot components.
Carefully separate cable ties and reinstate in original position when reinstalling.
Releasing air lines:
When removing air lines, press release
1
of respective connector in
direction of arrow
and pull out line.
Continuation:
Caution
Do not clean air supply unit/air lines using chemicals or a high-pressure cleaner.
Clean air supply unit/air lines using lint-free cloths.
Pay particular attention to ensure that no soling enters open lines/air line unions, connectors and electrical connections.
Remove suction hose
arrow
.
Loosen clamp
arrow
.
Pull off hose
1
.
Separate electrical connector
arrow
from
pressure switch for air compressor
F503
1
.
Note
Middle connector is difficult to access, separate connector after assembly has been removed from plenum chamber bulkhead.
Separate electrical connectors
arrows
on
pressure switch for air compressor
V534
.
Push securing clip
arrow
in
direction of arrow a
.
Pull air line
1
out of union in
direction of arrow b
.
Note
Second air line remains connected at present as it is only accessible later.
Second air line will be separated when air supply unit is removed from plenum chamber bulkhead in a later operation.
Remove nuts
arrows
.
Lay pressure differential line with bracket
1
to one side.
Unscrew nuts
arrows
for
air compressor
V534
on plenum chamber bulkhead.
Unscrew nut
arrow
under assembly
1
.
Pull air supply unit slightly towards front.
Disconnect air line
arrow
on pressure accumulator
1
.
Remove
air compressor
V534
and pressure accumulator with retainer.
Installing
Install in reverse order of removal, observing the following:
Note
Always renew self-locking nuts and bolts.
Always renew corroded nuts and bolts.
Carry out pressure test
Chapter
.
Specified torques
Chapter
“
Assembly overview -
air compressor
V534
/pressure accumulator
”