Greensmaster Flex 21 Page 7 – 29 Cutting Unit (Rev. C)
Disassembly (Fig. 44)
1. Remove reel bearing housings from mower frame
(see Cutting Reel Removal in this section).
NOTE: It is recommended to replace bearings on both
sides of reel.
2. Remove bearings from left side bearing housing:
A. Remove both oil seals from the bearing housing.
B. Once seals have been extracted from left side
bearing housing, bearing can be removed.
3. Remove bearings from right side bearing housing:
A. Remove both oil seals from the bearing housing.
B. Remove inner retaining ring from housing. Then
remove thrust washer (if equipped) and wave wash-
er from housing. Discard wave washer.
C. Remove bearing from bearing housing.
Assembly (Fig. 44)
1. To assemble left side bearing housing:
A. Pack new bearing with grease and press bearing
into the bearing housing with a bearing driver. Bear-
ing should be positioned between grooves inside
bearing housing after installation.
B. Fill bearing housing cavity approximately half full
with multi–purpose grease.
NOTE: Inner and outer reel seals on early production
machines are identical black cannister seals. Later pro-
duction machines have a blue outer cannister seal and
a black inner cannister seal. It is recommended on all
machines to use a blue outer seal and a black inner seal
when servicing the reel bearings.
C. With the flat side of the seal out, push seals into
the bearing housing by hand. Seals should be flush
with the housing. Do not strike seals during installa-
tion as seal damage could occur.
2. To assemble right side bearing housing:
A. The right side bearing housing should have outer
retaining ring installed prior to bearing installation.
B. Pack new bearing with grease and press bearing
into the bearing housing with a bearing driver. Use
the installed retaining ring to position the bearing.
C. Place new wave washer on the reel side of the
bearing and then install thrust washer (if equipped)
into housing.
D. Install and seat second retaining ring into the
groove of the housing.
E. Fill bearing housing cavity approximately half full
with multi–purpose grease.
NOTE: Inner and outer reel seals on early production
machines are identical black cannister seals. Later pro-
duction machines have a blue outer cannister seal and
a black inner cannister seal. It is recommended on all
machines to use a blue outer seal and a black inner seal
when servicing the reel bearings.
F. With the flat side of the seal out, push seals into
the bearing housing by hand. Seals should be flush
with the housing. Do not strike seals during installa-
tion as seal damage could occur.
IMPORTANT: On cutting units equipped with can-
nister seals, make sure that inner (black) seal bore
is completely free of lubricant before installing
bearing housings to cutting unit. Lubricant in the in-
ner (black) seal bore will allow cutting reel to rotate
inside the seal and reduce effectiveness of seal.
Outer (blue) seal will be easier to install and will not
be adversely affected with grease applied to inner
bore.
3. Install reel bearing housings to mower frame (see
Cutting Reel Installation in this section).
Cutting Unit
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