REPAIR KIT INSTRUCTIONS
FOR ACE M SERIES
HYDRAULIC MOTORS
HYDRAULIC MOTOR REPAIR KIT
This kit includes all parts needed to repair or update Ace
M Series motors to the second generation shaft seal.
The table on the right lists motor part numbers which
use this Repair Kit (RK-BAC-75-M).
Please refer to Ace Pump Product Update 19 for
complete details.
A video of the seal replacement is available here:
www.youtube.com/user/acepump
REPAIR KIT INSTALLATION
Step 6
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Motor Model Used on Pump Models
BAC-75-HYD-M16
FMC-650-HYD Series
FMC-650F-HYD Series
FMC-650FS-HYD Series
FMCWS-650F-HYD Series
FMCWS-650FS-HYD Series
BAC-75-HYD-M22 FMC-750F-HYD Series
BAC-75-HYD-M25 FMC-750F-HYD Series
Step 4
DISASSEMBLY:
1. Wipe the motor with a clean cloth to remove dirt which could contaminate
the motor.
2. Note port locations then remove hoses and external ttings.
3. Mark the motor section joints to indicate orientation of the motor
components.
4. Remove (4) motor assembly cap screws. Motors with hex head cap
screws require a 17 mm socket. Motors with socket head cap screws
require a 9.5 mm or 3/8” hex key wrench.
5. Set motor on rear cover with shaft pointing up.
6. Remove front motor ange by pressing thumbs against shaft end while
pulling up with ngers behind ange ears. Take care to not disturb the
other motor components.
7. Remove the housing seal O-ring and discard the old ange assembly.
Inspect the motor shaft for grooving or scoring. Moderate to severe
damage in the sealing area may prevent proper sealing and require motor
replacement.
Caution: Do not remove the protective paper tube from the new ange assembly.
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