Greenlee / A Textron Company 84455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
853 Quad Bender™
1-1/4" to 2" Roller Support
1. Disconnect the bender from the power source.
2. Remove the shoe and bridge assembly.
3. Place bridge on stable work surface. Use a pair of
needlenose pliers to disconnect the spring (48) from
the hole in the bridge beneath the roller support unit.
4. Remove the squeeze adjustment arm screw (38)
and arm (32).
5. Remove the three button head cap screws (37) and
adapter sleeve (33).
6. Place one hand under the support arm (2) to support
the weight of the roller support unit. Remove the
eccentric shaft (4).
Note: You may need to rotate the eccentric shaft to
remove it.
7. Lift bridge weldment (3) off of roller assembly.
8. To separate 1-1/4" and 1-1/2" roller assemblies:
Loosen the sleeve set screw (36) and remove the
1-1/4" to 1-1/2" pivot roller shaft (28). Remove the
sleeve (30).
9. On the 1-1/4" roller group:
•Remove two hex head screws (34). Remove the
outer roller plate (14).
•Remove the tail roller (7) and lead roller (6).
10. On the 1-1/2" roller group:
•Remove two hex head screws (34). Remove the
outer roller plate (14).
•Remove the tail roller (10).
•Remove all components of the split roller
assembly.
Maintenance (cont’d)
Pinch points:
Use both hands to hold the lead and
tail rollers to prevent the rollers from
pivoting.
Failure to observe this precaution
could result in injury or property
damage.
11. On the 2" roller group:
• Loosen the sleeve set screw (36) and press out
the 2" pivot shaft (29). Remove the sleeve (31).
•Remove the hex head screw (34). Remove one
retaining ring (35) from the tail roller shaft (26).
Remove outer roller plate (15).
•Remove the tail roller (9) and center roller (8).
•Remove all components of the split roller
assembly.
12. Clean off all of the grease and dirt.
13. Inspect each item. Replace any worn, damaged,
or missing items.
14. Lubricate all working surfaces with a high-quality
grease.
15. Replace all components in reverse order, noting the
following:
•On split roller groups: To ease the assembly of
the split roller subassemblies, begin by slipping
the O-rings onto the side plates. Assemble the
split roller subassemblies as shown, then slip the
O-rings into their correct positions.
•On the 2" roller group only: After replacing any
split roller components, add or remove shim
washers (42, 43, or 44) as needed.
•On the 1-1/2" roller group: Install the two Belleville
washers (21) so that the inside diameters contact
each other.
•Use Loctite®271 on the hex head screws (34).
Torque to 55 to 61 Nm (40 to 45 ft-lb).
16. Position the roller support arm (2) as shown.
Assemble the roller groups to the support arm.
17. Place the bridge weldment (3) over roller assembly.
18. Insert the eccentric shaft (4).
Note: You may need to rotate the eccentric shaft to
get it to seat completely.
19. Install the adapter sleeve (33) and three button head
cap screws (37).
20. Install the adjustment arm (32) and adjustment arm
screw (38).
21. Attach the spring (48) to the holes in the bridge
beneath the roller support unit.
