TABLE OF CONTENTS
SAFETY SYMBOLS .................................................................................................................................................4
SAFETY PRECAUTIONS .......................................................................................................................................5
TOOL STICKERS & TAGS ......................................................................................................................................8
OPERATION ............................................................................................................................................................9
TROUBLESHOOTING ..........................................................................................................................................15
MAINTENANCE .....................................................................................................................................................16
CHARGING THE ACCUMULATOR ......................................................................................................................17
WEAR TOLERANCES ...........................................................................................................................................19
FLOW TEST PROCEDURES ...............................................................................................................................24
DEFINITION OF TERMS ......................................................................................................................................26
SPECIFICATIONS .................................................................................................................................................27
ACCESSORIES .....................................................................................................................................................28
MB256 POWER CELL PARTS LIST .....................................................................................................................30
MB25600 SIDE PLATES ........................................................................................................................................31
To fill out a product warranty validation form, and for information on your warranty,
visit www.stanleyinfrastructure.com and select the Company tab > Warranty.
Note: The warranty validation record must be submitted to validate the warranty.
SERVICING: This manual contains safety, operation and routine maintenance instructions. STANLEY Infrastructure
recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an authorized
and certified dealer. Please read the following warning.
SERIOUS INJURY OR DEATH COULD RESULT FROM THE IMPROPER REPAIR OR
SERVICE OF THIS TOOL.
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN
AUTHORIZED AND CERTIFIED DEALER.
For the nearest certified dealer, call STANLEY Infrastructure at (503) 659-5660 and ask for a Customer Service Representative.
MB256 User Manual ◄ 3