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Mechanical Assembly Procedure (Continued):

44. Install the remaining support roller shafts (excluding the door pivot roller shaft):

“Stand-Alone” Tongs (Models 80-0420-5, 80-0420-12)
i.

Slide a 7/8” narrow flat washer over the remaining five support roller shafts (PN 101-3942) and insert into the remaining

support roller assemblies (excluding the door pivot support roller).

ii. Secure the bottoms of the support roller shafts with 7/8” narrow flat washers and 7/8” UNF thin nylock nuts with the

exception of the two shafts directly behind the brake band lug weldments. These two shafts will serve as leg mounts in

a future step.

“Backup-Ready” Tongs (Models 80-0420-3, 80-0420-9, 80-0420-14, 80-0420-15)
i.

Slide a 7/8” narrow flat washer over the remaining “short” support roller shaft (PN 101-3942) and four “long” support roller

shafts (PN 101-3944). Insert the short shaft into the support roller assembly directly in front of the RH brake band lug weld-

ment, and insert the four “long” shafts into the four remaining support roller assemblies (two per side directly behind each

brake band lug weldment).

ii. Secure the bottoms of the short support roller shaft directly in front of the RH brake band lug weldment with a 7/8” narrow

flat washer and 7/8” UNF thin nylock nut. Do not place fasteners on the four long shafts at this time.

45. Install thirteen cam followers (PN 02-0016) into the bottom cage plate (PN 1400-22) Secure each with a 5/8” UNF nylock jam

nut.

46. Install thirteen cam followers (PN 02-0016) into the top cage plate (PN 1400-21) Secure each with a 5/8” UNF nylock jam nut.
47. Support the bottom cage plate in position beneath the rotary gear, ensuring the cam followers are nested within the groove in the

rotary gear. Place the top cage plate in position over the rotary gear, ensuring the cam followers are nested within the groove

in the rotary gear

48. Place cage plate spacers (PN 1064-38) between the two cage plates at their connection points, one in the rear centre, and one

each side just inside the rotary gear.

49. Slide a 1/2” narrow flat washer followed by the backing pin spacer (PN 101-4093) over a 1/2” UNC x 8” hex bolt. Slide the

larger diameter hole in the backing pin retainer (PN 101-4095) over the backing pin spacer.

50. Attach the bottom cage plate to the top cage plate. Use two 1/2” NC x 6” hex bolts at the front, and the 1/2” x 8” bolt and spacer

assembly in the rear ensuring the backing pin spacer remains between the head of the bolt and the top of the top cage plate.

51. Thread the 3/8 UNC x 1-1/2” threaded stud (PN 101-4097) into the backing pin (PN 101-4042).
52. Insert the backing pin and stud through the bottom of the backing pin retainer installed in Step 49. Slide the short backing pin

spacer (PN 101-4096) over the top of the stud, and thread the backing pin knob (PN 02-0017) on to the top of the threaded

stud. Lift the backing pin and insert into one of the two receptacles in the rear of the top cage plate.

53. Install the top and bottom lined brake band lug weldments (1064-D4-29). Secure the brake bands to the top and bottom plates

using one brake band retainer (PN 101-0140) and two 3/8” UNC x 3/4” hex bolts and 3/8” lock washers at the rear of each brake

band, and a 3/8” UNF x 2” hex bolt and 3/8” UNF hex nylock nut at each brake band lug weldment.

54. Install the tong legs. Secure the front leg mount mount weldments to the bottom of the tong over the exposed support roller

shafts using 7/8” UNF thin nylock nuts. See the drawings and BOM on Pp. 5.32 - 5.33 to determine the correct leg mount weld-

ments for your application