Rebuilding Thomas Model 2650 - Invacare 6LXO2 Service Manual

PREVENTIVE MAINTENANCE
PROCEDURE 2 - PREVENTIVE MAINTENANCE (continued)
Compressor Top End Rebuild - 5/6 Liter
(For S/N after 98XXXXX)
CAUTION
TO PREVENT ELECTRICAL SHOCK, ALWAYS DIS-
CONNECT CONCENTRATOR FROM ELECTRI-
CAL OUTLET BEFORE SERVICING.
NOTE: This kit is designed for rebuilding the
Thomas Model 2650 Series. This compressor uses
this rebuild kit. The serial number is located on the
front of the compressor. If the serial number does
not begin in this way, this kit will not work.
The 5/6-Liter Thomas 2650 Series Compressor Re-
build Kit contains the following:
1. Two (2) Teflon Piston Cups
2. Two (2) Aluminum Piston Sleeves
3. Four (4) Flapper Valves - Intake and Exhaust
4. Four (4) Valve Keepers
5. Two (2) O-Ring - Sleeve
6. Two (2) Valve Plate Gaskets
7. Eight (8) Head Mounting Screws
8. Four (4) Valve Screws
9. Two (2) Valve Restraints
10. Two (2) Piston Cup Retainer Screws
Tools Required:
1. Torque wrench that has an inch-pound scale (for head
screws, set screws, flapper valve screw, and pipe
plugs)
®
2. Torx T-25 drive for torque wrench (for head screws
or flat blade)
3. 5/32-inch Allen wrench attachment for torque wrench
(for eccentric set screw)
4. Flat blade screwdriver attachment or 1/2-inch hex
socket for torque wrench (for flapper valve screw)
®
5. Torx T-27 screwdriver attachment for torque
wrench (for retainer screws)
WARNING
DO NOT lubricate or use oil on any moving parts.
The compressor eccentric uses a precision
sealed bearing.
REMOVING COMPRESSOR AND COMPRESSOR
HEADS (REFER TO FIGURE 15).
Compressor
1. Unplug concentrator.
2. Carefully remove compressor from concentrator. (Re-
fer to PROCEDURE 7 - REPLACING COMPRES-
SOR ASSEMBLY OR CAPACITOR).
Compressor Heads
3. Clean loose dirt from the outside of the compressor.
4. Use the TORX T-25 torque wrench and loosen the
eight (8) head screws.
5. Remove the compressor heads.
Valve Plate
6. Lift off the valve plate.
NOTE: Note the position of the tab on valve plate
for reassembly (FIGURE 14).
Tab
Tab
FIGURE 14 - TAB POSITIONS
NOTE: To avoid confusion, ONLY service one (1) end
of the compressor at a time.
Fan
7. Remove the fan by releasing the pressure from
the clip holding it to the shaft.
NOTE: Note position of fan/orientation for reas-
sembly.
33
PROCEDURE 2
Tab
NEW
Tab
OLD
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