Gardner Denver THOMAS SK927 User manual

MODEL SK927
COMPRESSOR SERVICE KIT
CAUTION: Improper assembly or use of damaged parts may lead to
premature failure. To avoid frequent repairs follow these assembly
procedures.
NOTE: Before you begin read these instructions thoroughly. Assemble the
necessary tools. You will need a at tip and phillips head screw driver as well as a
T-20 and T-25 Torx driver for a torque wrench.
WARNING: Unplug the compressor before beginning disassembly.
ALWAYS NOTE POSITION AND ORIENTATION OF PARTS AS REMOVED
TO ASSURE CORRECT POSITIONING WHEN REASSEMBLING.
Part No.642650B 02/07 ©2007 Printed in U.S.A
All Rights Reserved
For service to 917/927 Series Compressors
FILTER REPLACEMENT
1. Remove lter cap.
2. Remove old lter and discard.
3. Wipe inside of lter body and cap with a clean soft cloth.
4. Place new lter inside of lter body.
5. Replace cap.
Filter Cap
Filter
Filter Body
621102 Valve Flapper
Intake & Exhaust (2)
633560 Gasket O-Ring
625223 Valve Plate
Screws (5)
625540 Diaphragm
Hold Down Screws (4)
625444 Head Screws
(6)
608212 Diaphragm
625160 Valve Flapper
Screws (2)
641034 Filter
617045 Valve Keeper
Strip (2)
3524 Washington Avenue, Sheboygan, WI 53081 USA
[phone] www.gd-thomas.com

Hold Down Plate
Screw
Diaphragm
Connecting
Rod
Hold Down
Plate
DIAPHRAGM REPLACEMENT
1. Remove head.
2. Remove four screws from hold down plate. Discard screws.
3. Remove hold down plate, diaphragm and diaphragm liner (if present) from connecting
rod top. Wipe connecting rod top and hold down plate with a clean soft cloth.
4. Center new diaphragm and hold down plate over connecting rod holes. Make sure
all holes align as shown in the illustration below and that the diaphragm is centered
in the well of the housing. Insert four new screws. Torque screws to 20 in- lbs. in
criss-cross pattern.
5. Replace head and valve plate assembly. Torque screws to 40 in- lbs. in a criss-cross
pattern.
INTAKE & EXHAUST VALVE REPLACEMENT
1. Remove 4 head screws and head. Discard
screws. Turn head over. Remove 4 screws
from valve plate. Discard screws. Remove
valve plate from head. NOTE: If valve plate
needs to be pried out of head cavity, be careful
that the intake hole seat area does not get
damaged. If damage should occur the valve
plate will need to be replaced.
2. Remove and discard gasket.
3. Remove screw, apper and keeper from top
side of valve plate, discard. Wipe valve plate
and head with a soft clean cloth. Reassemble
new flapper and keeper with new screw.
Torque to 10 in- lbs. Make sure the end of
the apper covers the intake hole and that
the keeper is aligned properly. Turn valve
plate over and repeat procedure on exhaust
apper.
4. Wipe inside of head with a clean soft cloth, be
sure to remove any excess gasket. Install new
gasket.
5. Replace valve plate in head. (See Fig. #1).
Insert 4 new screws. Torque valve plate
screws to 40 in- lbs.
6. Replace head. Torque screws to 48 in- lbs. in
a criss-cross pattern.
Valve
Keeper
Valve
Flapper
Gasket
Valve Plate
Screw
Head