Rotac 26R Overhaul Instructions Download Page 1

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Repair of Rotac

Actuators

26R Model

OVERHAUL INSTRUCTIONS

Read the entire contents of these instructions before installing the actuator and before

making any connections to the actuator. These instructions must be followed in all

respects to avoid damage to the actuator and associated components and/or injury to

personnel.

For further information contact:

Micromatic/Subsidiary of Textron Inc.

525 Berne Street

Berne, Indiana 46711

Phone: 219/589-2136 Fax: 219/589-8966

Summary of Contents for 26R

Page 1: ...efore making any connections to the actuator These instructions must be followed in all respects to avoid damage to the actuator and associated components and or injury to personnel For further inform...

Page 2: ...ter removing head screws 22 from the head 2 strike end of shaft 5 with plastic mallet or aluminum bar stock and allow the shaft 5 to push the head 2 off DO NOT PRY HEADS OFF Damage will occur to the h...

Page 3: ...haft to break Cause poor fitting coupling Too soft keys c Scoring on A diameter Any scratch 010 or more requires the part to be replaced d Scoring or galling on shaft journal This problem can be repai...

Page 4: ...is caused by the shaft vane coming into contact with the shoe A shoe in this condition must be replaced E Seals 1 Cut or shaved seal is usually done when assembled This can occur in a number of diffe...

Page 5: ...16 wedge 15 and cap 14 into its groove Shim to proper height See figure 6 D Place shoe seal cushion 8 in its groove around shoe 6 E Place dowel pins 24 in shoe 6 F Cut the shoe seal cap 9 and place it...

Page 6: ...als below the surface of the top of the housing O Remove the shim stock or assembly tools P Install the head 2 Q Pull down evenly and secure with the head screws 22 R Torque to the value shown on char...

Page 7: ...ressure listed for one 1 full minute before check is started BREAKAWAY PRESSURE Rotation of a Rotac actuator output shaft must be accomplished by an internal pressure not in excess of pressure listed...

Page 8: ...11 Seal Vane Cap 12 Seal Shaft Cushion 13 Seal Shaft Cap Item Description 14 Seal Shoulder Cap 15 Seal Shoulder Wedge 16 Seal Shoulder Cushion 17 Seal Retainer 18 Retainer Bearing 19 Thrust Ring 20 Sh...

Page 9: ...9 of 10 Figure 5 Thrust Bearing...

Page 10: ...ed in the bottom of the groove 3 Install the shoulder seal wedge with the flat side against the cushion as pictured above 4 Place the shoulder seal cap against the wedge so the 45 degree angles match...