Table of Contents
Advertisement
Assembly
Inspection
1. Bearing (6): Hold the center hub of the bearing
between your thumb and index finger. Roll the outer
surface against the palm of your other hand. Motion
should be smooth with no rough spots. If any
roughness is noted, replace the bearing.
2. Needle Bearings (2 & 15): Hold the motor cap or
saw head motor body in one hand, or place on a
flat surface. Insert drive shaft or idler shaft in the
bearing. Spin the shaft. The shaft and bearing
should turn smoothly. If any roughness is noted,
Greenlee Fairmont recommends replacing the saw
head motor body or motor cap as an assembly with
the bearings already pressed in.
3. Saw Head Motor Body (1) and Motor Cap (14):
Mating surfaces, gear cavities, oil passageways,
etc., in the components must be free of grooves or
nicks. If either component has grooves or nicks,
replace the component as an assembly with the
bearings already pressed in.
4. Drive Shaft (5) and Idler Shaft (8): All surfaces
must be smooth and free of grooves or nicks. If
either component has grooves or nicks, replace the
component.
5. Spool (25) and Sleeve (19): All surfaces must be
smooth and free of grooves or nicks. If either
component has grooves or nicks, replace the
component.
6. O-rings: Always replace O-rings in components that
have been disassembled with new O-rings during
assembly. A packing kit is available that includes all
O-rings and gasket.
7. Gasket (12): Always replace gasket when motor
cap is removed from saw head motor body.
8. Drive Sprocket (52) and Washer (51): Sprocket and
washer must not have any hairline cracks. If either
one does, replace the component. Sprocket teeth
must be not chipped or broken. If the teeth are
worn, all teeth must be worn equally. If the sprocket
teeth are worn and a new saw chain is to be in-
stalled, install a new drive sprocket and washer as
an assembly.
9. Guide Bar (57): Guide bar must be straight. The
rails and groove must not have excessive wear.
If it does, replace the bar.
10. Saw Chain (58): Saw chain must not have exces-
sive wear, broken or damaged component. If it
does, repair or replace the chain.
Greenlee Textron / Subsidiary of Textron Inc.
49200 Chain Saw
Assembly
When assembling parts, refer to Parts illustrations for
correct orientation and placement of parts.
Clean all parts with solvent, then dry with compressed
air. Do not expose O-rings or other packing components
to solvent for long periods of time.
Inspect all parts as they are assembled for signs of
damage, wear, cracks, etc. Do not install any parts
which appear to be damaged.
Apply hydraulic fluid or O-ring lubricant to all O-rings
and all metal surfaces which O-rings must slide over.
When installing an O-ring over a sharp edge, use a
rolling action to avoid damage to the O-ring.
Wherever assembled parts cause metal-to-metal
contact, coat the surfaces with hydraulic fluid or O-ring
lubricant.
Needle Bearing Installation
Saw Head Motor Body (See Figure 21)
1. Install a new needle bearing (2) with the identifi-
cation mark facing up (readable from Surface A)
into the saw head motor body (1).
2. Press the bearing into the saw head motor body
until the bearing cage is .016 inch below Surface A.
3. Repeat procedure for the other needle bearing if it
was removed.
Motor Cap (See Figure 21)
1. Install a new needle bearing (15) with the identifica-
tion mark facing up (readable from Surface B) into
the motor cap (14).
2. Press the bearing into the motor cap until the
bearing cage is .047 inch below Surface B.
3. Repeat procedure for the other needle bearing if it
was removed.
Needle Bearing Installation
SURFACE B
MOTOR CAP
SURFACE A
MOTOR BODY
O-RING SEAL
25
4455 Boeing Dr., Rockford, IL 61109-2988
Figure 21
.047 BELOW
SURFACE B
NEEDLE BEARING
.016 BELOW
SURFACE A
815/397-7070
Advertisement
Table of Contents
