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T-305
2. Inspect cylinder wear surface for scoring or
scratches. If scoring is present, replace cylinder.
Assembly:
1. Place new nuts and sleeves (nuts first) on manifold.
2. Install new cylinder o--ring ( Item 12 ) in groove. Sili-
cone can be used to keep o--ring in place.
3. Select appropriate head assembly from kit.
NOTE
Each head assembly is specific for each side of
compressor. Line up manifolds. Keeping head
and valves tight, start 4 head bolts. Watch that
clips DO NOT cause cylinder ”O” Ring to move.
Remove clips and hold head assembly tight to
cylinder. Hand tighten 4 screws.
4. Torque 4 screws to 160 in lb.
5. Partially tighten 15/16 manifold nuts.
6. Install elbow and reducer in newly installed head.
Note position for filter tube, install tube and tighten
7/16 wrench
7. Repeat disassembly and reassembly of head on op-
posite side of compressor using the same procedure
as above. Retain inlet and outlet fittings for reas-
sembly.
8. Fully tighten all manifold nuts. Tighten until nut stops
on elbow.
MAJOR REBUILD
NOTE
Install a Ring Kit when performing a major
rebuild.
Disassembly:
1. Remove compressor from container installation and
place on work surface in a vertical position.
2. Use 3/16 socket head wrench to remove cover bolts.
Set bolts aside for later use. Remove
3. Use 7/16 open end wrench to completely loosen the
fitting at bottom of head. Use 15/16 wrench to loosen
manifold nuts and 3/16 wrench to loosen 4 head bolts
( Item 6 ).Locate crankcase filter. Use a 7/16 open--
end wrench to completely loosen the nut of the tube
fitting near the crankcase. Carefully remove the filter
tube from the fitting.
4. Mark orientation of head to valve plate and cylinder,
for each head assembly, prior to removal. Use 3/16
socket head wrench to remove 4 socket head cap
screws from one cylinder head. Remove head, valve
plate and valves from the compressor.
5. Use 3/16 socket head wrench to remove 8 socket
head cap screws from cylinder flange.
6. Note cylinder orientation and location on compressor.
Mark each cylinder and crankcase to assist in correct
orientation during reassembly.
7. Carefully pull each cylinder and head assembly away
from crankcase. Removing the cylinder may require a
slight twist motion back and forth, because of an o--
ring seal.
8. Rotate rods to an outward position. Remove retaining
ring from end of motor shaft.
Figure 72 Puller Plate Positioning
9. Insert the puller plate beneath the piston as shown in
Figure 72. Rotate 90 degrees around the shaft.
Figure 73 Puller Installation
10. Install the puller on top of the crankcase as shown in
Figure 73. Insert three puller bolts into the rod puller
and thread into puller plate.
11.Remove crankcase bolts from motor. Add alignment
pins in crankcase to prevent puller from rotating.
12.Install brass spacer between puller and shaft.
13.Carefully turn threaded puller shaft with wrench to re-
move piston rods. Remove puller from crankcase.
14.Remove crankcase from motor.
15.Remove shaft seal ( Item 29, Figure 77) from crank-
case.
Inspection:
1. Inspect crankcase filter. If filter appears dirty or
clogged, replace with filter kit.
2. Inspect head valves for any sign of damage. Valves
should seat flat against valve plate. If valves are bent
or damaged, replace valves .
3. Inspect crankcase filter. If filter appears dirty or
clogged, replace with filter kit.
Assembly:
1. Install shaft seal in crankcase by pushing on the outer
edge of the seal.
2. Apply a liberal amount of silicone grease to back side
of shaft seal
Summary of Contents for 69NT40-489-100 Series
Page 2: ......
Page 4: ......
Page 14: ...Safety 10 T 305...
Page 28: ...4 T 305...
Page 40: ...16 T 305...
Page 50: ...26 T 305 Figure 12 Standard Configuration Report...
Page 112: ...88 T 305...
Page 164: ...140 T 305...
Page 167: ...143 T 305 Based on drawings 62 10526 Rev and 62 10736 Rev Figure 90 Electrical Schematic CA...
Page 174: ...150 T 305...