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74
Beck drives require only a minimum of routine
maintenance. A visual inspection is in order
to verify that the connection to the final control
element is intact and operating normally. If
vibration is present, check the electrical terminal
connections and other hardware for tightness.
LUBRICATION
Periodic lubrication is not required on Beck
control drives. However, it is recommended that
during major shutdowns or outages, the drives
in the most severe applications be inspected to
determine the need to relubricate the drive gear
train.
If your drive has a linkage, to extend the life of
the linkage rod ends, they should be included in
your scheduled lubrication program.
CAUTION
If your drive has a linkage, before removing
the gear module assembly, block the control
drive crank arm to prevent the crank arm and
the gear train from moving when the change
module is removed.
To inspect the gears, remove the gear module
assembly on the 11-209/-269, -309/-369 and
-409/-469. On Model 11-159/-169, the motor
must be removed to access the gears. Clean the
gears thoroughly, removing all old lubrication.
MAINTENANCE ROUTINE
11-409 Gear Module
Examine the gear teeth, shaft bore, and
gear shafts for signs of excessive wear, scoring,
or other damage. If evidence of this damage
is present, the drive should be returned to the
factory for a detailed examination of the main
gear, which requires complete disassembly of
the drive. See "HOW TO OBTAIN SERVICE" on
page 87.
If there is no evidence of damage to the
gearing, recoat the teeth and shaft bores of all
gears with a heavy layer of Fiske Lubriplate GR-
132 or equivalent (GR-132 is an E.P. grease with
polymer additives). The ball bearing on the output
shaft and crown gear shaft have added double
grease seals and require no maintenance for the
life of the bearings. Inspect all grease seals and
replace any that show wear. Reassemble the
drive, referencing pages 8–14 for appropriate
bolt torques.