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OVERHAUL INSTRUCTIONS
Rotac
Model SB-18-1V
Bills of Material – 26-10-7707 & 26-10-7712
Outline Drawings- 26-10-7707 & 26-10-7712 SHTS 1
Part lists- 26-10-7707 &26-10-7712 SHTS 2
For further information contact:
MICROMATIC, LLC
525 Berne St.
Berne, IN. 46711-1298
Ph 260 589 2136 Fax 260 589 8966
www.rotachydroac.com
Page 1 of 9
RM - 26-10-77077 Rev. D
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Summary of Contents for MICROMATIC Rotac SB-18-1V
- Page 1 Bills of Material – 26-10-7707 & 26-10-7712 Outline Drawings- 26-10-7707 & 26-10-7712 SHTS 1 Part lists- 26-10-7707 &26-10-7712 SHTS 2 For further information contact: MICROMATIC, LLC 525 Berne St. Berne, IN. 46711-1298 Ph 260 589 2136 Fax 260 589 8966 www.rotachydroac.com...
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Page 2: Revision History
REVISION HISTORY REV. DATE DESCRIPTION 11DEC20 REVISED / ADDED INSTRUCTIONS REGARDING ECO 11815 & 11864; 1/2 - 13 TORQUE WAS 126 FT- STINSON LBS, NOW 93 FT-LBS REVISED/ADDED NEW ASSEMBLY TOOL KIT REGARDING ECO 12151; TOOL KIT PART NUMBER IS 02SEP21 LUTHMAN 26-97-0348 AND 26-97-0349;... - Page 3 ACTUATOR DISASSEMBLY, INSPECTION AND ASSEMBLY INTRODUCTION These instructions provide an overhaul procedure and parts lists for the SB-18-1V-DE-FLATS-FT and SB-18-1V- ® DE-KEY-FT Rotac Rotary Actuators. Actuator overhaul should not be attempted without having a seal kit on hand. See table 4 for seal kit numbers. The exploded &...
- Page 4 A. Shaft (Figure 1) 1. Examine the vane for cracks on "A" diameter, keyways, and any other areas where stress may be applied. a. Spot check by Magnaflux can be used to check for cracks. Three different materials are needed, and MUST be applied in order: SKC-S Cleaner SKL-HF/SKL-S Penetrant...
- Page 5 D. Seals - It is recommended that all seals be replaced. 1. Cutting or shaving of seals usually occurs during assembly. This can occur in several different ways. Refer to assembly instructions for proper procedure. SEAL REPLACEMENT AND ASSEMBLY The assembly area should be clean to prevent contamination of parts assembly. A plastic or metal covered workbench is the best.
- Page 6 G. Place two wavy springs (20), hub seal ring (19), and hub seal (18) into the head (3). Ensure that hub seal (18) is free to move axially. NOTE: Movement of this seal is essential to the proper performance of the actuator. Seal should be a slip fit on the O.D.
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Page 7: Troubleshooting Guide
TABLE 5 Trouble Shooting Guide TROUBLE PROBABLE CAUSE REMEDY External Leakage at Shaft Defective shaft seal(s) (22) or cushions (O- Replace defective parts. ring)(s) (24). Shaft (4) scored or worn. Bearing area in Repair shaft or replace defective part. head(s) (2 or 3) worn or scored. External Leakage at Joint Defective O-rings (10), or damaged sealing Replace defective O-ring. - Page 8 26-10-7707 EXPLODED VIEW Page 8 of 9 RM - 26-10-77077 Rev. D...
- Page 9 26-10-7712 EXPLODED VIEW Page 9 of 9 RM - 26-10-77077 Rev. D...